[1868] | 1 | //#--------------------------------------------------------------------------- |
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| 2 | //# GBTFITSreader.cc: interface class for GBT SDFITS input using CFITSIO. |
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| 3 | //#--------------------------------------------------------------------------- |
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| 4 | //# livedata - processing pipeline for single-dish, multibeam spectral data. |
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| 5 | //# Copyright (C) 2000-2009, Australia Telescope National Facility, CSIRO |
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| 6 | //# |
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| 7 | //# This file is part of livedata. |
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| 8 | //# |
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| 9 | //# livedata is free software: you can redistribute it and/or modify it under |
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| 10 | //# the terms of the GNU General Public License as published by the Free |
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| 11 | //# Software Foundation, either version 3 of the License, or (at your option) |
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| 12 | //# any later version. |
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| 13 | //# |
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| 14 | //# livedata is distributed in the hope that it will be useful, but WITHOUT |
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| 15 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 16 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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| 17 | //# more details. |
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| 18 | //# |
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| 19 | //# You should have received a copy of the GNU General Public License along |
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| 20 | //# with livedata. If not, see <http://www.gnu.org/licenses/>. |
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| 21 | //# |
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| 22 | //# Correspondence concerning livedata may be directed to: |
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| 23 | //# Internet email: mcalabre@atnf.csiro.au |
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| 24 | //# Postal address: Dr. Mark Calabretta |
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| 25 | //# Australia Telescope National Facility, CSIRO |
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| 26 | //# PO Box 76 |
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| 27 | //# Epping NSW 1710 |
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| 28 | //# AUSTRALIA |
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| 29 | //# |
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| 30 | //# http://www.atnf.csiro.au/computing/software/livedata.html |
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| 31 | //# $Id: SDFITSreader.cc,v 19.45 2009-09-30 07:23:48 cal103 Exp $ |
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| 32 | //#--------------------------------------------------------------------------- |
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| 33 | //# The GBTFITSreader class reads single dish FITS files from Green Bank |
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| 34 | //# telescopes. This class is actually a specific version of SDFITSreader. |
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| 35 | //# |
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| 36 | //# Original: 2000/08/09, Mark Calabretta, ATNF |
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| 37 | //# Update: 2010/07/29, Takeshi Nakazato, NAOJ |
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| 38 | //#--------------------------------------------------------------------------- |
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| 39 | |
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| 40 | #include <atnf/pks/pks_maths.h> |
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| 41 | #include <atnf/PKSIO/MBrecord.h> |
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| 42 | #include <atnf/PKSIO/GBTFITSreader.h> |
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| 43 | #include <atnf/PKSIO/SrcType.h> |
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| 44 | |
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| 45 | #include <measures/Measures/MeasConvert.h> |
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| 46 | #include <measures/Measures/MCFrequency.h> |
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| 47 | #include <measures/Measures/MFrequency.h> |
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| 48 | #include <measures/Measures/MPosition.h> |
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| 49 | #include <measures/Measures/MEpoch.h> |
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| 50 | #include <measures/Measures/MDirection.h> |
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| 51 | |
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| 52 | #include <casa/Logging/LogIO.h> |
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| 53 | #include <casa/Quanta/MVTime.h> |
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| 54 | #include <casa/math.h> |
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| 55 | #include <casa/stdio.h> |
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| 56 | |
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| 57 | #include <algorithm> |
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| 58 | #include <strings.h> |
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| 59 | #include <cstring> |
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| 60 | |
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| 61 | class FITSparm |
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| 62 | { |
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| 63 | public: |
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| 64 | char *name; // Keyword or column name. |
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| 65 | int type; // Expected keyvalue or column data type. |
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| 66 | int colnum; // Column number; 0 for keyword; -1 absent. |
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| 67 | int coltype; // Column data type, as found. |
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| 68 | long nelem; // Column data repeat count; < 0 for vardim. |
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| 69 | int tdimcol; // TDIM column number; 0 for keyword; -1 absent. |
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| 70 | char units[32]; // Units from TUNITn keyword. |
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| 71 | }; |
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| 72 | |
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| 73 | // Numerical constants. |
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| 74 | const double PI = 3.141592653589793238462643; |
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| 75 | |
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| 76 | // Factor to convert radians to degrees. |
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| 77 | const double D2R = PI / 180.0; |
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| 78 | |
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| 79 | // Class name |
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| 80 | const string className = "GBTFITSreader" ; |
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| 81 | |
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| 82 | //---------------------------------------------------- GBTFITSreader::(statics) |
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| 83 | |
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| 84 | int GBTFITSreader::sInit = 1; |
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| 85 | int GBTFITSreader::sReset = 0; |
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| 86 | int (*GBTFITSreader::sALFAcalNon)[2] = (int (*)[2])(new float[16]); |
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| 87 | int (*GBTFITSreader::sALFAcalNoff)[2] = (int (*)[2])(new float[16]); |
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| 88 | float (*GBTFITSreader::sALFAcalOn)[2] = (float (*)[2])(new float[16]); |
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| 89 | float (*GBTFITSreader::sALFAcalOff)[2] = (float (*)[2])(new float[16]); |
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| 90 | float (*GBTFITSreader::sALFAcal)[2] = (float (*)[2])(new float[16]); |
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| 91 | |
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| 92 | //------------------------------------------------- GBTFITSreader::GBTFITSreader |
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| 93 | |
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| 94 | GBTFITSreader::GBTFITSreader() |
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| 95 | { |
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| 96 | // Default constructor. |
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| 97 | cSDptr = 0x0; |
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| 98 | |
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| 99 | // Allocate space for data descriptors. |
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| 100 | cData = new FITSparm[NDATA]; |
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| 101 | |
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| 102 | for (int iData = 0; iData < NDATA; iData++) { |
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| 103 | cData[iData].colnum = -1; |
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| 104 | } |
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| 105 | |
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| 106 | // Initialize pointers. |
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| 107 | cBeams = 0x0; |
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| 108 | cIFs = 0x0; |
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| 109 | cStartChan = 0x0; |
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| 110 | cEndChan = 0x0; |
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| 111 | cRefChan = 0x0; |
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| 112 | cPols = 0x0; |
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| 113 | |
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| 114 | // other initialization |
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| 115 | numHDU = 0 ; |
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| 116 | |
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| 117 | } |
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| 118 | |
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| 119 | //------------------------------------------------ GBTFITSreader::~GBTFITSreader |
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| 120 | |
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| 121 | GBTFITSreader::~GBTFITSreader() |
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| 122 | { |
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| 123 | close(); |
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| 124 | |
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| 125 | delete [] cData; |
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| 126 | } |
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| 127 | |
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| 128 | //--------------------------------------------------------- GBTFITSreader::open |
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| 129 | |
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| 130 | // Open an SDFITS file for reading. |
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| 131 | |
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| 132 | int GBTFITSreader::open( |
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| 133 | char* sdName, |
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| 134 | int &nBeam, |
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| 135 | int* &beams, |
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| 136 | int &nIF, |
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| 137 | int* &IFs, |
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| 138 | int* &nChan, |
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| 139 | int* &nPol, |
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| 140 | int* &haveXPol, |
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| 141 | int &haveBase, |
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| 142 | int &haveSpectra, |
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| 143 | int &extraSysCal) |
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| 144 | { |
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| 145 | const string methodName = "open()" ; |
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| 146 | |
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| 147 | if (cSDptr) { |
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| 148 | close(); |
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| 149 | } |
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| 150 | |
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| 151 | // Open the SDFITS file. |
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| 152 | cStatus = 0; |
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| 153 | if (fits_open_file(&cSDptr, sdName, READONLY, &cStatus)) { |
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| 154 | sprintf(cMsg, "ERROR: Failed to open SDFITS file\n %s", sdName); |
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| 155 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, cMsg); |
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| 156 | return 1; |
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| 157 | } |
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| 158 | |
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| 159 | // Get number of HDUs in the file |
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| 160 | if ( fits_get_num_hdus( cSDptr, &numHDU, &cStatus ) ) { |
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| 161 | sprintf(cMsg, "ERROR: Failed to get number of HDUs in the file\n %s", sdName ); |
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| 162 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, cMsg) ; |
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| 163 | return 1 ; |
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| 164 | } |
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| 165 | // ignore Primary HDU |
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| 166 | numHDU = numHDU - 1 ; |
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| 167 | sprintf(cMsg, "number of HDUs = %d", numHDU) ; |
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| 168 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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| 169 | |
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| 170 | // Move to the SDFITS extension. |
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| 171 | cALFA = cALFA_BD = cALFA_CIMA = 0; |
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| 172 | char *extName = "SINGLE DISH" ; |
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| 173 | if (fits_movnam_hdu(cSDptr, BINARY_TBL, "SINGLE DISH", 0, &cStatus)) { |
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| 174 | // No SDFITS table, look for BDFITS or CIMAFITS. |
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| 175 | cStatus = 0; |
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| 176 | if (fits_movnam_hdu(cSDptr, BINARY_TBL, "BDFITS", 0, &cStatus) == 0) { |
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| 177 | cALFA_BD = 1; |
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| 178 | extName = "BDFITS" ; |
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| 179 | |
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| 180 | } else { |
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| 181 | cStatus = 0; |
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| 182 | if (fits_movnam_hdu(cSDptr, BINARY_TBL, "CIMAFITS", 0, &cStatus) == 0) { |
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| 183 | cALFA_CIMA = 1; |
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| 184 | extName = "CIMAFITS" ; |
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| 185 | |
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| 186 | // Check for later versions of CIMAFITS. |
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| 187 | float version; |
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| 188 | readParm("VERSION", TFLOAT, &version); |
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| 189 | if (version >= 2.0f) cALFA_CIMA = int(version); |
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| 190 | |
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| 191 | } else { |
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| 192 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Failed to locate SDFITS binary table."); |
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| 193 | close(); |
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| 194 | return 1; |
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| 195 | } |
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| 196 | } |
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| 197 | |
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| 198 | // Arecibo ALFA data of some kind. |
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| 199 | cALFA = 1; |
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| 200 | if (sInit) { |
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| 201 | for (int iBeam = 0; iBeam < 8; iBeam++) { |
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| 202 | for (int iPol = 0; iPol < 2; iPol++) { |
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| 203 | sALFAcalOn[iBeam][iPol] = 0.0f; |
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| 204 | sALFAcalOff[iBeam][iPol] = 0.0f; |
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| 205 | |
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| 206 | // Nominal factor to calibrate spectra in Jy. |
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| 207 | sALFAcal[iBeam][iPol] = 3.0f; |
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| 208 | } |
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| 209 | } |
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| 210 | |
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| 211 | sInit = 0; |
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| 212 | } |
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| 213 | } |
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| 214 | |
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| 215 | // Find the number of rows. |
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| 216 | cNRowT = new long[numHDU] ; |
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| 217 | cNRowCum = new long[numHDU] ; |
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| 218 | hduId = new int[numHDU] ; |
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| 219 | cNRow = 0 ; |
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| 220 | fits_movabs_hdu( cSDptr, 1, NULL, &cStatus ) ; |
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| 221 | for ( int i = 0 ; i < numHDU ; i++ ) { |
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| 222 | if ( i == 0 ) { |
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| 223 | fits_movnam_hdu( cSDptr, BINARY_TBL, extName, 0, &cStatus ) ; |
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| 224 | fits_get_hdu_num( cSDptr, &(hduId[i]) ) ; |
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| 225 | } |
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| 226 | else { |
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| 227 | if ( fits_movrel_hdu( cSDptr, 1, NULL, &cStatus ) ) { |
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| 228 | log( LogOrigin( className, methodName, WHERE), LogIO::SEVERE, "Failed to move" ) ; |
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| 229 | } |
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| 230 | fits_get_hdu_num( cSDptr, &(hduId[i]) ) ; |
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| 231 | } |
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| 232 | sprintf(cMsg, "HDU ID for %d: %d", i, hduId[i]) ; |
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| 233 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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| 234 | fits_get_num_rows( cSDptr, &cNRowT[i], &cStatus ) ; |
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| 235 | if (!cNRowT[i]) { |
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| 236 | ostringstream oss ; |
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| 237 | sprintf(cMsg, "Table %d contains no entries.", i ) ; |
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| 238 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, cMsg); |
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| 239 | close(); |
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| 240 | return 1; |
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| 241 | } |
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| 242 | cNRow += cNRowT[i] ; |
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| 243 | cNRowCum[i] = cNRow ; |
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| 244 | sprintf(cMsg, "number of rows for HDU %d = %ld", i, cNRowT[i]) ; |
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| 245 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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| 246 | sprintf(cMsg, "cumulative number of rows for HDU %d = %ld", i, cNRowCum[i]) ; |
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| 247 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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| 248 | } |
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| 249 | sprintf(cMsg, "number of rows = %ld", cNRow) ; |
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| 250 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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| 251 | |
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| 252 | // Move back to first binary table |
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| 253 | fits_movabs_hdu( cSDptr, hduId[0], NULL, &cStatus ) ; |
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| 254 | |
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| 255 | ////// |
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| 256 | // For devlopment |
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| 257 | // cNRow = 0 ; |
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| 258 | // for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
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| 259 | // //cNRowT[ihdu] = 10 ; |
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| 260 | // //cNRowT[ihdu] = 100 ; |
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| 261 | // cNRowT[ihdu] = 500 ; |
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| 262 | // cNRow += cNRowT[ihdu] ; |
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| 263 | // cNRowCum[ihdu] = cNRow ; |
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| 264 | // sprintf(cMsg, "number of rows for HDU %d = %ld", ihdu, cNRowT[ihdu]) ; |
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| 265 | // log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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| 266 | // sprintf(cMsg, "cumulative number of rows for HDU %d = %ld", ihdu, cNRowCum[ihdu]) ; |
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| 267 | // log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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| 268 | // } |
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| 269 | // sprintf(cMsg, "number of rows = %ld", cNRow) ; |
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| 270 | // log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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| 271 | // Original cNRow is cNRowT[0] |
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| 272 | // cNRow = cNRowT[0] ; |
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| 273 | // fits_get_num_rows(cSDptr, &cNRow, &cStatus); |
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| 274 | ///// |
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| 275 | |
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| 276 | if (!cNRow) { |
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| 277 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Table contains no entries."); |
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| 278 | close(); |
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| 279 | return 1; |
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| 280 | } |
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| 281 | |
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| 282 | // GBT data. |
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| 283 | char telescope[32]; |
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| 284 | readParm("TELESCOP", TSTRING, telescope); // Core. |
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| 285 | cGBT = strncmp(telescope, "GBT", 3) == 0 || |
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| 286 | strncmp(telescope, "NRAO_GBT", 8) == 0; |
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| 287 | |
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| 288 | |
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| 289 | // Check that the DATA array column is present. |
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| 290 | findData(DATA, "DATA", TFLOAT); |
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| 291 | haveSpectra = cHaveSpectra = cData[DATA].colnum > 0; |
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| 292 | |
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| 293 | cNAxisTime = 0; |
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| 294 | if (cHaveSpectra) { |
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| 295 | // Find the number of data axes (must be the same for each IF). |
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| 296 | cNAxes = 5; |
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| 297 | if (readDim(DATA, 1, &cNAxes, cNAxis)) { |
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| 298 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
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| 299 | close(); |
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| 300 | return 1; |
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| 301 | } |
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| 302 | |
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| 303 | if (cALFA_BD) { |
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| 304 | // ALFA BDFITS: variable length arrays don't actually vary and there is |
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| 305 | // no TDIM (or MAXISn) card; use the LAGS_IN value. |
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| 306 | cNAxes = 5; |
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| 307 | readParm("LAGS_IN", TLONG, cNAxis); |
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| 308 | cNAxis[1] = 1; |
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| 309 | cNAxis[2] = 1; |
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| 310 | cNAxis[3] = 1; |
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| 311 | cNAxis[4] = 1; |
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| 312 | cData[DATA].nelem = cNAxis[0]; |
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| 313 | } |
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| 314 | |
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| 315 | if (cNAxes < 4) { |
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| 316 | // Need at least four axes (for now). |
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| 317 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "DATA array contains fewer than four axes."); |
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| 318 | close(); |
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| 319 | return 1; |
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| 320 | } else if (cNAxes > 5) { |
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| 321 | // We support up to five axes. |
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| 322 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "DATA array contains more than five axes."); |
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| 323 | close(); |
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| 324 | return 1; |
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| 325 | } |
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| 326 | |
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| 327 | findData(FLAGGED, "FLAGGED", TBYTE); |
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| 328 | |
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| 329 | } else { |
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| 330 | // DATA column not present, check for a DATAXED keyword. |
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| 331 | findData(DATAXED, "DATAXED", TSTRING); |
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| 332 | if (cData[DATAXED].colnum < 0) { |
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| 333 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "DATA array column absent from binary table."); |
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| 334 | close(); |
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| 335 | return 1; |
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| 336 | } |
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| 337 | |
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| 338 | // Determine the number of axes and their length. |
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| 339 | char dataxed[32]; |
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| 340 | readParm("DATAXED", TSTRING, dataxed); |
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| 341 | |
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| 342 | for (int iaxis = 0; iaxis < 5; iaxis++) cNAxis[iaxis] = 0; |
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| 343 | sscanf(dataxed, "(%ld,%ld,%ld,%ld,%ld)", cNAxis, cNAxis+1, cNAxis+2, |
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| 344 | cNAxis+3, cNAxis+4); |
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| 345 | for (int iaxis = 4; iaxis > -1; iaxis--) { |
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| 346 | if (cNAxis[iaxis] == 0) cNAxes = iaxis; |
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| 347 | } |
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| 348 | } |
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| 349 | |
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| 350 | char *CTYPE[5] = {"CTYPE1", "CTYPE2", "CTYPE3", "CTYPE4", "CTYPE5"}; |
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| 351 | char *CRPIX[5] = {"CRPIX1", "CRPIX2", "CRPIX3", "CRPIX4", "CRPIX5"}; |
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| 352 | char *CRVAL[5] = {"CRVAL1", "CRVAL2", "CRVAL3", "CRVAL4", "CRVAL5"}; |
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| 353 | char *CDELT[5] = {"CDELT1", "CDELT2", "CDELT3", "CDELT4", "CDELT5"}; |
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| 354 | |
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| 355 | // Find required DATA array axes. |
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| 356 | char ctype[5][72]; |
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| 357 | for (int iaxis = 0; iaxis < cNAxes; iaxis++) { |
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| 358 | strcpy(ctype[iaxis], ""); |
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| 359 | readParm(CTYPE[iaxis], TSTRING, ctype[iaxis]); // Core. |
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| 360 | } |
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| 361 | |
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| 362 | if (cStatus) { |
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| 363 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
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| 364 | close(); |
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| 365 | return 1; |
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| 366 | } |
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| 367 | |
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| 368 | char *fqCRVAL = 0; |
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| 369 | char *fqCDELT = 0; |
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| 370 | char *fqCRPIX = 0; |
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| 371 | char *raCRVAL = 0; |
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| 372 | char *decCRVAL = 0; |
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| 373 | char *timeCRVAL = 0; |
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| 374 | char *timeCDELT = 0; |
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| 375 | char *timeCRPIX = 0; |
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| 376 | char *beamCRVAL = 0; |
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| 377 | char *polCRVAL = 0; |
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| 378 | |
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| 379 | cFreqAxis = -1; |
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| 380 | cStokesAxis = -1; |
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| 381 | cRaAxis = -1; |
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| 382 | cDecAxis = -1; |
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| 383 | cTimeAxis = -1; |
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| 384 | cBeamAxis = -1; |
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| 385 | |
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| 386 | for (int iaxis = 0; iaxis < cNAxes; iaxis++) { |
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| 387 | if (strncmp(ctype[iaxis], "FREQ", 4) == 0) { |
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| 388 | cFreqAxis = iaxis; |
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| 389 | fqCRVAL = CRVAL[iaxis]; |
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| 390 | fqCDELT = CDELT[iaxis]; |
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| 391 | fqCRPIX = CRPIX[iaxis]; |
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| 392 | |
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| 393 | } else if (strncmp(ctype[iaxis], "STOKES", 6) == 0) { |
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| 394 | cStokesAxis = iaxis; |
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| 395 | polCRVAL = CRVAL[iaxis]; |
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| 396 | |
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| 397 | } else if (strncmp(ctype[iaxis], "RA", 2) == 0) { |
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| 398 | cRaAxis = iaxis; |
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| 399 | raCRVAL = CRVAL[iaxis]; |
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| 400 | |
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| 401 | } else if (strncmp(ctype[iaxis], "DEC", 3) == 0) { |
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| 402 | cDecAxis = iaxis; |
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| 403 | decCRVAL = CRVAL[iaxis]; |
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| 404 | |
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| 405 | } else if (strcmp(ctype[iaxis], "TIME") == 0) { |
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| 406 | // TIME (UTC seconds since midnight); axis type, if present, takes |
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| 407 | // precedence over keyword. |
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| 408 | cTimeAxis = iaxis; |
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| 409 | timeCRVAL = CRVAL[iaxis]; |
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| 410 | |
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| 411 | // Check for non-degeneracy. |
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| 412 | if ((cNAxisTime = cNAxis[iaxis]) > 1) { |
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| 413 | timeCDELT = CDELT[iaxis]; |
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| 414 | timeCRPIX = CRPIX[iaxis]; |
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| 415 | sprintf(cMsg, "DATA array contains a TIME axis of length %ld.", |
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| 416 | cNAxisTime); |
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| 417 | //logMsg(cMsg); |
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| 418 | log(LogOrigin( className, methodName, WHERE ), LogIO::NORMAL, cMsg); |
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| 419 | } |
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| 420 | |
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| 421 | } else if (strcmp(ctype[iaxis], "BEAM") == 0) { |
---|
| 422 | // BEAM can be a keyword or axis type. |
---|
| 423 | cBeamAxis = iaxis; |
---|
| 424 | beamCRVAL = CRVAL[iaxis]; |
---|
| 425 | } |
---|
| 426 | } |
---|
| 427 | |
---|
| 428 | if (cALFA_BD) { |
---|
| 429 | // Fixed in ALFA CIMAFITS. |
---|
| 430 | cRaAxis = 2; |
---|
| 431 | raCRVAL = "CRVAL2A"; |
---|
| 432 | |
---|
| 433 | cDecAxis = 3; |
---|
| 434 | decCRVAL = "CRVAL3A"; |
---|
| 435 | } |
---|
| 436 | |
---|
| 437 | |
---|
| 438 | // Check that required axes are present. |
---|
| 439 | if (cFreqAxis < 0 || cStokesAxis < 0 || cRaAxis < 0 || cDecAxis < 0) { |
---|
| 440 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Could not find required DATA array axes."); |
---|
| 441 | close(); |
---|
| 442 | return 1; |
---|
| 443 | } |
---|
| 444 | |
---|
| 445 | // Set up machinery for data retrieval. |
---|
| 446 | findData(SCAN, "SCAN", TINT); // Shared. |
---|
| 447 | findData(CYCLE, "CYCLE", TINT); // Additional. |
---|
| 448 | findData(DATE_OBS, "DATE-OBS", TSTRING); // Core. |
---|
| 449 | |
---|
| 450 | if (cTimeAxis >= 0) { |
---|
| 451 | // The DATA array has a TIME axis. |
---|
| 452 | if (cNAxisTime > 1) { |
---|
| 453 | // Non-degenerate. |
---|
| 454 | findData(TimeRefVal, timeCRVAL, TDOUBLE); // Time reference value. |
---|
| 455 | findData(TimeDelt, timeCDELT, TDOUBLE); // Time increment. |
---|
| 456 | findData(TimeRefPix, timeCRPIX, TFLOAT); // Time reference pixel. |
---|
| 457 | } else { |
---|
| 458 | // Degenerate, treat its like a simple TIME keyword. |
---|
| 459 | findData(TIME, timeCRVAL, TDOUBLE); |
---|
| 460 | } |
---|
| 461 | |
---|
| 462 | } else { |
---|
| 463 | findData(TIME, "TIME", TDOUBLE); // Core. |
---|
| 464 | } |
---|
| 465 | |
---|
| 466 | findData(EXPOSURE, "EXPOSURE", TFLOAT); // Core. |
---|
| 467 | findData(OBJECT, "OBJECT", TSTRING); // Core. |
---|
| 468 | findData(OBJ_RA, "OBJ-RA", TDOUBLE); // Additional. |
---|
| 469 | findData(OBJ_DEC, "OBJ-DEC", TDOUBLE); // Additional. |
---|
| 470 | findData(RESTFRQ, "RESTFRQ", TDOUBLE); // Additional. |
---|
| 471 | findData(OBSMODE, "OBSMODE", TSTRING); // Shared. |
---|
| 472 | |
---|
| 473 | findData(BEAM, "BEAM", TSHORT); // Additional. |
---|
| 474 | findData(IF, "IF", TSHORT); // Additional. |
---|
| 475 | findData(FqRefVal, fqCRVAL, TDOUBLE); // Frequency reference value. |
---|
| 476 | findData(FqDelt, fqCDELT, TDOUBLE); // Frequency increment. |
---|
| 477 | findData(FqRefPix, fqCRPIX, TFLOAT); // Frequency reference pixel. |
---|
| 478 | findData(RA, raCRVAL, TDOUBLE); // Right ascension. |
---|
| 479 | findData(DEC, decCRVAL, TDOUBLE); // Declination. |
---|
| 480 | findData(SCANRATE, "SCANRATE", TFLOAT); // Additional. |
---|
| 481 | |
---|
| 482 | findData(TSYS, "TSYS", TFLOAT); // Core. |
---|
| 483 | findData(CALFCTR, "CALFCTR", TFLOAT); // Additional. |
---|
| 484 | findData(XCALFCTR, "XCALFCTR", TFLOAT); // Additional. |
---|
| 485 | findData(BASELIN, "BASELIN", TFLOAT); // Additional. |
---|
| 486 | findData(BASESUB, "BASESUB", TFLOAT); // Additional. |
---|
| 487 | findData(XPOLDATA, "XPOLDATA", TFLOAT); // Additional. |
---|
| 488 | |
---|
| 489 | findData(REFBEAM, "REFBEAM", TSHORT); // Additional. |
---|
| 490 | findData(TCAL, "TCAL", TFLOAT); // Shared. |
---|
| 491 | findData(TCALTIME, "TCALTIME", TSTRING); // Additional. |
---|
| 492 | findData(AZIMUTH, "AZIMUTH", TFLOAT); // Shared. |
---|
| 493 | findData(ELEVATIO, "ELEVATIO", TFLOAT); // Shared. |
---|
| 494 | findData(PARANGLE, "PARANGLE", TFLOAT); // Additional. |
---|
| 495 | findData(FOCUSAXI, "FOCUSAXI", TFLOAT); // Additional. |
---|
| 496 | findData(FOCUSTAN, "FOCUSTAN", TFLOAT); // Additional. |
---|
| 497 | findData(FOCUSROT, "FOCUSROT", TFLOAT); // Additional. |
---|
| 498 | findData(TAMBIENT, "TAMBIENT", TFLOAT); // Shared. |
---|
| 499 | findData(PRESSURE, "PRESSURE", TFLOAT); // Shared. |
---|
| 500 | findData(HUMIDITY, "HUMIDITY", TFLOAT); // Shared. |
---|
| 501 | findData(WINDSPEE, "WINDSPEE", TFLOAT); // Shared. |
---|
| 502 | findData(WINDDIRE, "WINDDIRE", TFLOAT); // Shared. |
---|
| 503 | |
---|
| 504 | findData(STOKES, polCRVAL, TINT); |
---|
| 505 | findData(SIG, "SIG", TSTRING); |
---|
| 506 | findData(CAL, "CAL", TSTRING); |
---|
| 507 | |
---|
| 508 | findData(RVSYS, "RVSYS", TDOUBLE); |
---|
| 509 | findData(VFRAME, "VFRAME", TDOUBLE); |
---|
| 510 | findData(VELDEF, "VELDEF", TSTRING); |
---|
| 511 | |
---|
| 512 | findData(TIMESTAMP, "TIMESTAMP", TSTRING); |
---|
| 513 | findData(DURATION, "DURATION", TDOUBLE); |
---|
| 514 | findData(SAMPLER, "SAMPLER", TSTRING); |
---|
| 515 | |
---|
| 516 | if (cStatus) { |
---|
| 517 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 518 | close(); |
---|
| 519 | return 1; |
---|
| 520 | } |
---|
| 521 | |
---|
| 522 | |
---|
| 523 | // Check for alternative column names. |
---|
| 524 | if (cALFA) { |
---|
| 525 | // ALFA data. |
---|
| 526 | cALFAscan = 0; |
---|
| 527 | cScanNo = 0; |
---|
| 528 | if (cALFA_CIMA) { |
---|
| 529 | findData(SCAN, "SCAN_ID", TINT); |
---|
| 530 | if (cALFA_CIMA > 1) { |
---|
| 531 | // Note that RECNUM increases by cNAxisTime per row. |
---|
| 532 | findData(CYCLE, "RECNUM", TINT); |
---|
| 533 | } else { |
---|
| 534 | findData(CYCLE, "SUBSCAN", TINT); |
---|
| 535 | } |
---|
| 536 | } else if (cALFA_BD) { |
---|
| 537 | findData(SCAN, "SCAN_NUMBER", TINT); |
---|
| 538 | findData(CYCLE, "PATTERN_NUMBER", TINT); |
---|
| 539 | } |
---|
| 540 | } else { |
---|
| 541 | readData(SCAN, 1, &cFirstScanNo); |
---|
| 542 | } |
---|
| 543 | |
---|
| 544 | cCycleNo = 0; |
---|
| 545 | cLastUTC = 0.0; |
---|
| 546 | for ( int i = 0 ; i < 4 ; i++ ) { |
---|
| 547 | cGLastUTC[i] = 0.0 ; |
---|
| 548 | cGLastScan[i] = -1 ; |
---|
| 549 | cGCycleNo[i] = 0 ; |
---|
| 550 | } |
---|
| 551 | |
---|
| 552 | // Beam number, 1-relative by default. |
---|
| 553 | cBeam_1rel = 1; |
---|
| 554 | if (cALFA) { |
---|
| 555 | // ALFA INPUT_ID, 0-relative (overrides BEAM column if present). |
---|
| 556 | findData(BEAM, "INPUT_ID", TSHORT); |
---|
| 557 | cBeam_1rel = 0; |
---|
| 558 | |
---|
| 559 | } else if (cData[BEAM].colnum < 0) { |
---|
| 560 | if (beamCRVAL) { |
---|
| 561 | // There is a BEAM axis. |
---|
| 562 | findData(BEAM, beamCRVAL, TDOUBLE); |
---|
| 563 | } else { |
---|
| 564 | // ms2sdfits output, 0-relative "feed" number. |
---|
| 565 | findData(BEAM, "MAIN_FEED1", TSHORT); |
---|
| 566 | cBeam_1rel = 0; |
---|
| 567 | } |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | // IF number, 1-relative by default. |
---|
| 571 | cIF_1rel = 1; |
---|
| 572 | if (cALFA && cData[IF].colnum < 0) { |
---|
| 573 | // ALFA data, 0-relative. |
---|
| 574 | if (cALFA_CIMA > 1) { |
---|
| 575 | findData(IF, "IFN", TSHORT); |
---|
| 576 | } else { |
---|
| 577 | findData(IF, "IFVAL", TSHORT); |
---|
| 578 | } |
---|
| 579 | cIF_1rel = 0; |
---|
| 580 | } |
---|
| 581 | |
---|
| 582 | // ms2sdfits writes a scalar "TSYS" column that averages the polarizations. |
---|
| 583 | int colnum; |
---|
| 584 | findCol("SYSCAL_TSYS", &colnum); |
---|
| 585 | if (colnum > 0) { |
---|
| 586 | // This contains the vector Tsys. |
---|
| 587 | findData(TSYS, "SYSCAL_TSYS", TFLOAT); |
---|
| 588 | } |
---|
| 589 | |
---|
| 590 | // XPOLDATA? |
---|
| 591 | |
---|
| 592 | if (cData[SCANRATE].colnum < 0) { |
---|
| 593 | findData(SCANRATE, "FIELD_POINTING_DIR_RATE", TFLOAT); |
---|
| 594 | } |
---|
| 595 | |
---|
| 596 | if (cData[RESTFRQ].colnum < 0) { |
---|
| 597 | findData(RESTFRQ, "RESTFREQ", TDOUBLE); |
---|
| 598 | if (cData[RESTFRQ].colnum < 0) { |
---|
| 599 | findData(RESTFRQ, "SPECTRAL_WINDOW_REST_FREQUENCY", TDOUBLE); |
---|
| 600 | } |
---|
| 601 | } |
---|
| 602 | |
---|
| 603 | if (cData[OBJ_RA].colnum < 0) { |
---|
| 604 | findData(OBJ_RA, "SOURCE_DIRECTION", TDOUBLE); |
---|
| 605 | } |
---|
| 606 | if (cData[OBJ_DEC].colnum < 0) { |
---|
| 607 | findData(OBJ_DEC, "SOURCE_DIRECTION", TDOUBLE); |
---|
| 608 | } |
---|
| 609 | |
---|
| 610 | // REFBEAM? |
---|
| 611 | |
---|
| 612 | if (cData[TCAL].colnum < 0) { |
---|
| 613 | findData(TCAL, "SYSCAL_TCAL", TFLOAT); |
---|
| 614 | } else if (cALFA_BD) { |
---|
| 615 | // ALFA BDFITS has a different TCAL with 64 elements - kill it! |
---|
| 616 | findData(TCAL, "NO NO NO", TFLOAT); |
---|
| 617 | } |
---|
| 618 | |
---|
| 619 | if (cALFA_BD) { |
---|
| 620 | // ALFA BDFITS. |
---|
| 621 | findData(AZIMUTH, "CRVAL2B", TFLOAT); |
---|
| 622 | findData(ELEVATIO, "CRVAL3B", TFLOAT); |
---|
| 623 | } |
---|
| 624 | |
---|
| 625 | if (cALFA) { |
---|
| 626 | // ALFA data. |
---|
| 627 | findData(PARANGLE, "PARA_ANG", TFLOAT); |
---|
| 628 | } |
---|
| 629 | |
---|
| 630 | if (cData[TAMBIENT].colnum < 0) { |
---|
| 631 | findData(TAMBIENT, "WEATHER_TEMPERATURE", TFLOAT); |
---|
| 632 | } |
---|
| 633 | |
---|
| 634 | if (cData[PRESSURE].colnum < 0) { |
---|
| 635 | findData(PRESSURE, "WEATHER_PRESSURE", TFLOAT); |
---|
| 636 | } |
---|
| 637 | |
---|
| 638 | if (cData[HUMIDITY].colnum < 0) { |
---|
| 639 | findData(HUMIDITY, "WEATHER_REL_HUMIDITY", TFLOAT); |
---|
| 640 | } |
---|
| 641 | |
---|
| 642 | if (cData[WINDSPEE].colnum < 0) { |
---|
| 643 | findData(WINDSPEE, "WEATHER_WIND_SPEED", TFLOAT); |
---|
| 644 | } |
---|
| 645 | |
---|
| 646 | if (cData[WINDDIRE].colnum < 0) { |
---|
| 647 | findData(WINDDIRE, "WEATHER_WIND_DIRECTION", TFLOAT); |
---|
| 648 | } |
---|
| 649 | |
---|
| 650 | // Determine which beams are present in the data. |
---|
| 651 | if (cData[BEAM].colnum > 0) { |
---|
| 652 | short *beamCol = new short[cNRow]; |
---|
| 653 | short beamNul = 1; |
---|
| 654 | int anynul; |
---|
| 655 | if (fits_read_col(cSDptr, TSHORT, cData[BEAM].colnum, 1, 1, cNRow, |
---|
| 656 | &beamNul, beamCol, &anynul, &cStatus)) { |
---|
| 657 | delete [] beamCol; |
---|
| 658 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 659 | close(); |
---|
| 660 | return 1; |
---|
| 661 | } |
---|
| 662 | |
---|
| 663 | // Find the maximum beam number. |
---|
| 664 | cNBeam = cBeam_1rel - 1; |
---|
| 665 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 666 | if (beamCol[irow] > cNBeam) { |
---|
| 667 | cNBeam = beamCol[irow]; |
---|
| 668 | } |
---|
| 669 | |
---|
| 670 | // Check validity. |
---|
| 671 | if (beamCol[irow] < cBeam_1rel) { |
---|
| 672 | delete [] beamCol; |
---|
| 673 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "SDFITS file contains invalid beam number."); |
---|
| 674 | close(); |
---|
| 675 | return 1; |
---|
| 676 | } |
---|
| 677 | } |
---|
| 678 | |
---|
| 679 | if (!cBeam_1rel) cNBeam++; |
---|
| 680 | |
---|
| 681 | // Find all beams present in the data. |
---|
| 682 | cBeams = new int[cNBeam]; |
---|
| 683 | for (int ibeam = 0; ibeam < cNBeam; ibeam++) { |
---|
| 684 | cBeams[ibeam] = 0; |
---|
| 685 | } |
---|
| 686 | |
---|
| 687 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 688 | cBeams[beamCol[irow] - cBeam_1rel] = 1; |
---|
| 689 | } |
---|
| 690 | |
---|
| 691 | delete [] beamCol; |
---|
| 692 | |
---|
| 693 | } else { |
---|
| 694 | // No BEAM column. |
---|
| 695 | cNBeam = 1; |
---|
| 696 | cBeams = new int[1]; |
---|
| 697 | cBeams[0] = 1; |
---|
| 698 | } |
---|
| 699 | |
---|
| 700 | // Passing back the address of the array allows PKSFITSreader::select() to |
---|
| 701 | // modify its elements directly. |
---|
| 702 | nBeam = cNBeam; |
---|
| 703 | beams = cBeams; |
---|
| 704 | |
---|
| 705 | |
---|
| 706 | // Determine which IFs are present in the data. |
---|
| 707 | if (cData[IF].colnum > 0) { |
---|
| 708 | short *IFCol = new short[cNRow]; |
---|
| 709 | short IFNul = 1; |
---|
| 710 | int anynul; |
---|
| 711 | if (fits_read_col(cSDptr, TSHORT, cData[IF].colnum, 1, 1, cNRow, |
---|
| 712 | &IFNul, IFCol, &anynul, &cStatus)) { |
---|
| 713 | delete [] IFCol; |
---|
| 714 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 715 | close(); |
---|
| 716 | return 1; |
---|
| 717 | } |
---|
| 718 | |
---|
| 719 | // Find the maximum IF number. |
---|
| 720 | cNIF = cIF_1rel - 1; |
---|
| 721 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 722 | if (IFCol[irow] > cNIF) { |
---|
| 723 | cNIF = IFCol[irow]; |
---|
| 724 | } |
---|
| 725 | |
---|
| 726 | // Check validity. |
---|
| 727 | if (IFCol[irow] < cIF_1rel) { |
---|
| 728 | delete [] IFCol; |
---|
| 729 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "SDFITS file contains invalid IF number."); |
---|
| 730 | close(); |
---|
| 731 | return 1; |
---|
| 732 | } |
---|
| 733 | } |
---|
| 734 | |
---|
| 735 | if (!cIF_1rel) cNIF++; |
---|
| 736 | |
---|
| 737 | // Find all IFs present in the data. |
---|
| 738 | cIFs = new int[cNIF]; |
---|
| 739 | cNChan = new int[cNIF]; |
---|
| 740 | cNPol = new int[cNIF]; |
---|
| 741 | cHaveXPol = new int[cNIF]; |
---|
| 742 | cGetXPol = 0; |
---|
| 743 | |
---|
| 744 | for (int iIF = 0; iIF < cNIF; iIF++) { |
---|
| 745 | cIFs[iIF] = 0; |
---|
| 746 | cNChan[iIF] = 0; |
---|
| 747 | cNPol[iIF] = 0; |
---|
| 748 | cHaveXPol[iIF] = 0; |
---|
| 749 | } |
---|
| 750 | |
---|
| 751 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 752 | int iIF = IFCol[irow] - cIF_1rel; |
---|
| 753 | if (cIFs[iIF] == 0) { |
---|
| 754 | cIFs[iIF] = 1; |
---|
| 755 | |
---|
| 756 | // Find the axis lengths. |
---|
| 757 | if (cHaveSpectra) { |
---|
| 758 | if (cData[DATA].nelem < 0) { |
---|
| 759 | // Variable dimension array. |
---|
| 760 | if (readDim(DATA, irow+1, &cNAxes, cNAxis)) { |
---|
| 761 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 762 | close(); |
---|
| 763 | return 1; |
---|
| 764 | } |
---|
| 765 | } |
---|
| 766 | |
---|
| 767 | } else { |
---|
| 768 | if (cData[DATAXED].colnum > 0) { |
---|
| 769 | char dataxed[32]; |
---|
| 770 | readParm("DATAXED", TSTRING, dataxed); |
---|
| 771 | |
---|
| 772 | sscanf(dataxed, "(%ld,%ld,%ld,%ld,%ld)", cNAxis, cNAxis+1, |
---|
| 773 | cNAxis+2, cNAxis+3, cNAxis+4); |
---|
| 774 | } |
---|
| 775 | } |
---|
| 776 | |
---|
| 777 | // Number of channels and polarizations. |
---|
| 778 | cNChan[iIF] = cNAxis[cFreqAxis]; |
---|
| 779 | cNPol[iIF] = cNAxis[cStokesAxis]; |
---|
| 780 | cHaveXPol[iIF] = 0; |
---|
| 781 | |
---|
| 782 | // Is cross-polarization data present? |
---|
| 783 | if (cData[XPOLDATA].colnum > 0) { |
---|
| 784 | // Check that it conforms. |
---|
| 785 | int nAxis; |
---|
| 786 | long nAxes[2]; |
---|
| 787 | |
---|
| 788 | if (readDim(XPOLDATA, irow+1, &nAxis, nAxes)) { |
---|
| 789 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE ); |
---|
| 790 | close(); |
---|
| 791 | return 1; |
---|
| 792 | } |
---|
| 793 | |
---|
| 794 | // Default is to get it if we have it. |
---|
| 795 | if (nAxis == 2 && |
---|
| 796 | nAxes[0] == 2 && |
---|
| 797 | nAxes[1] == cNChan[iIF]) { |
---|
| 798 | cGetXPol = cHaveXPol[iIF] = 1; |
---|
| 799 | } |
---|
| 800 | } |
---|
| 801 | } |
---|
| 802 | } |
---|
| 803 | |
---|
| 804 | delete [] IFCol; |
---|
| 805 | |
---|
| 806 | } else if ( numHDU > 1 ) { |
---|
| 807 | Vector<Int> nIFs = nIFPerHDU() ; |
---|
| 808 | cNIF = sum( nIFs ) ; |
---|
| 809 | sprintf( cMsg, "cNIF = %d", cNIF ) ; |
---|
| 810 | log( LogOrigin( className, methodName, WHERE ), LogIO::NORMAL, cMsg ) ; |
---|
| 811 | cIFs = new int[cNIF] ; |
---|
| 812 | cNChan = new int[cNIF]; |
---|
| 813 | cNPol = new int[cNIF]; |
---|
| 814 | cHaveXPol = new int[cNIF]; |
---|
| 815 | cGetXPol = 0; |
---|
| 816 | for ( int iif = 0 ; iif < numHDU ; iif++ ) { |
---|
| 817 | cIFs[iif] = 1 ; |
---|
| 818 | cNChan[iif] = 0 ; |
---|
| 819 | cNPol[iif] = 1 ; |
---|
| 820 | cHaveXPol[iif] = 0 ; |
---|
| 821 | } |
---|
| 822 | Int cidx = 0 ; |
---|
| 823 | for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
---|
| 824 | // Move |
---|
| 825 | fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ; |
---|
| 826 | |
---|
| 827 | if (readDim(DATA, 1, &cNAxes, cNAxis)) { |
---|
| 828 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 829 | close(); |
---|
| 830 | return 1; |
---|
| 831 | } |
---|
| 832 | |
---|
| 833 | // Number of channels and polarizations. |
---|
| 834 | for ( int irow = 0 ; irow < nIFs[ihdu] ; irow++ ) { |
---|
| 835 | cNChan[cidx+irow] = cNAxis[cFreqAxis]; |
---|
| 836 | cNPol[cidx+irow] = cNAxis[cStokesAxis]; |
---|
| 837 | cHaveXPol[cidx+irow] = 0; |
---|
| 838 | |
---|
| 839 | // Is cross-polarization data present? |
---|
| 840 | if (cData[XPOLDATA].colnum > 0) { |
---|
| 841 | // Check that it conforms. |
---|
| 842 | int nAxis; |
---|
| 843 | long nAxes[2]; |
---|
| 844 | |
---|
| 845 | if (readDim(XPOLDATA, 1, &nAxis, nAxes)) { |
---|
| 846 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE ); |
---|
| 847 | close(); |
---|
| 848 | return 1; |
---|
| 849 | } |
---|
| 850 | |
---|
| 851 | // Default is to get it if we have it. |
---|
| 852 | for ( int irow = 0 ; irow < nIFs[ihdu] ; irow++ ) { |
---|
| 853 | if (nAxis == 2 && |
---|
| 854 | nAxes[0] == 2 && |
---|
| 855 | nAxes[1] == cNChan[cidx+irow]) { |
---|
| 856 | cGetXPol = cHaveXPol[cidx+irow] = 1; |
---|
| 857 | } |
---|
| 858 | } |
---|
| 859 | } |
---|
| 860 | } |
---|
| 861 | cidx += nIFs[ihdu] ; |
---|
| 862 | } |
---|
| 863 | } else { |
---|
| 864 | // No IF column. |
---|
| 865 | cNIF = 1; |
---|
| 866 | cIFs = new int[1]; |
---|
| 867 | cIFs[0] = 1; |
---|
| 868 | |
---|
| 869 | cNChan = new int[1]; |
---|
| 870 | cNPol = new int[1]; |
---|
| 871 | cHaveXPol = new int[1]; |
---|
| 872 | cGetXPol = 0; |
---|
| 873 | |
---|
| 874 | // Number of channels and polarizations. |
---|
| 875 | cNChan[0] = cNAxis[cFreqAxis]; |
---|
| 876 | cNPol[0] = cNAxis[cStokesAxis]; |
---|
| 877 | cHaveXPol[0] = 0; |
---|
| 878 | } |
---|
| 879 | |
---|
| 880 | if (cALFA && cALFA_CIMA < 2) { |
---|
| 881 | // Older ALFA data labels each polarization as a separate IF. |
---|
| 882 | cNPol[0] = cNIF; |
---|
| 883 | cNIF = 1; |
---|
| 884 | } |
---|
| 885 | |
---|
| 886 | // For GBT data that stores spectra for each polarization in separate rows |
---|
| 887 | if ( cData[STOKES].colnum > 0 ) { |
---|
| 888 | // int *stokesCol = new int[cNRow]; |
---|
| 889 | int stokesNul = 1; |
---|
| 890 | int anynul; |
---|
| 891 | // if (fits_read_col(cSDptr, TINT, cData[STOKES].colnum, 1, 1, cNRow, |
---|
| 892 | // &stokesNul, stokesCol, &anynul, &cStatus)) { |
---|
| 893 | // delete [] stokesCol; |
---|
| 894 | // log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 895 | // close(); |
---|
| 896 | // return 1; |
---|
| 897 | // } |
---|
| 898 | vector<int *> stokesCols( numHDU ) ; |
---|
| 899 | for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
---|
| 900 | fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ; |
---|
| 901 | stokesCols[ihdu] = new int[cNRowT[ihdu]] ; |
---|
| 902 | fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ; |
---|
| 903 | if (fits_read_col(cSDptr, TINT, cData[STOKES].colnum, 1, 1, cNRowT[ihdu], |
---|
| 904 | &stokesNul, stokesCols[ihdu] , &anynul, &cStatus)) { |
---|
| 905 | for ( int jhdu = 0 ; jhdu <= ihdu ; jhdu++ ) { |
---|
| 906 | delete [] stokesCols[jhdu] ; |
---|
| 907 | } |
---|
| 908 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 909 | close(); |
---|
| 910 | return 1; |
---|
| 911 | } |
---|
| 912 | } |
---|
| 913 | fits_movabs_hdu( cSDptr, hduId[0], NULL, &cStatus ) ; |
---|
| 914 | |
---|
| 915 | vector<int> pols ; |
---|
| 916 | // pols.push_back( stokesCol[0] ) ; |
---|
| 917 | // for ( int i = 0 ; i < cNRow ; i++ ) { |
---|
| 918 | // bool pmatch = false ; |
---|
| 919 | // for ( uint j = 0 ; j < pols.size() ; j++ ) { |
---|
| 920 | // if ( stokesCol[i] == pols[j] ) { |
---|
| 921 | // pmatch = true ; |
---|
| 922 | // break ; |
---|
| 923 | // } |
---|
| 924 | // } |
---|
| 925 | // if ( !pmatch ) { |
---|
| 926 | // pols.push_back( stokesCol[i] ) ; |
---|
| 927 | // } |
---|
| 928 | // } |
---|
| 929 | pols.push_back( stokesCols[0][0] ) ; |
---|
| 930 | for ( int k = 0 ; k < numHDU ; k++ ) { |
---|
| 931 | for ( int i = 0 ; i < cNRowT[k] ; i++ ) { |
---|
| 932 | bool pmatch = false ; |
---|
| 933 | for ( uint j = 0 ; j < pols.size() ; j++ ) { |
---|
| 934 | if ( stokesCols[k][i] == pols[j] ) { |
---|
| 935 | pmatch = true ; |
---|
| 936 | break ; |
---|
| 937 | } |
---|
| 938 | } |
---|
| 939 | if ( !pmatch ) { |
---|
| 940 | pols.push_back( stokesCols[k][i] ) ; |
---|
| 941 | } |
---|
| 942 | } |
---|
| 943 | } |
---|
| 944 | |
---|
| 945 | cPols = new int[pols.size()] ; |
---|
| 946 | for ( uint i = 0 ; i < pols.size() ; i++ ) { |
---|
| 947 | cPols[i] = pols[i] ; |
---|
| 948 | } |
---|
| 949 | |
---|
| 950 | for ( int i = 0 ; i < cNIF ; i++ ) { |
---|
| 951 | cNPol[i] = pols.size() ; |
---|
| 952 | } |
---|
| 953 | |
---|
| 954 | // delete [] stokesCol ; |
---|
| 955 | for ( int k = 0 ; k < numHDU ; k++ ) { |
---|
| 956 | delete [] stokesCols[k] ; |
---|
| 957 | } |
---|
| 958 | } |
---|
| 959 | |
---|
| 960 | // Passing back the address of the array allows PKSFITSreader::select() to |
---|
| 961 | // modify its elements directly. |
---|
| 962 | nIF = cNIF; |
---|
| 963 | IFs = cIFs; |
---|
| 964 | |
---|
| 965 | nChan = cNChan; |
---|
| 966 | nPol = cNPol; |
---|
| 967 | haveXPol = cHaveXPol; |
---|
| 968 | |
---|
| 969 | |
---|
| 970 | // Default channel range selection. |
---|
| 971 | cStartChan = new int[cNIF]; |
---|
| 972 | cEndChan = new int[cNIF]; |
---|
| 973 | cRefChan = new int[cNIF]; |
---|
| 974 | |
---|
| 975 | for (int iIF = 0; iIF < cNIF; iIF++) { |
---|
| 976 | cStartChan[iIF] = 1; |
---|
| 977 | cEndChan[iIF] = cNChan[iIF]; |
---|
| 978 | cRefChan[iIF] = cNChan[iIF]/2 + 1; |
---|
| 979 | } |
---|
| 980 | |
---|
| 981 | // Default is to get it if we have it. |
---|
| 982 | cGetSpectra = cHaveSpectra; |
---|
| 983 | |
---|
| 984 | |
---|
| 985 | // Are baseline parameters present? |
---|
| 986 | cHaveBase = 0; |
---|
| 987 | if (cData[BASELIN].colnum) { |
---|
| 988 | // Check that it conforms. |
---|
| 989 | int nAxis, status = 0; |
---|
| 990 | long nAxes[2]; |
---|
| 991 | |
---|
| 992 | if (fits_read_tdim(cSDptr, cData[BASELIN].colnum, 2, &nAxis, nAxes, |
---|
| 993 | &status) == 0) { |
---|
| 994 | cHaveBase = (nAxis == 2); |
---|
| 995 | } |
---|
| 996 | } |
---|
| 997 | haveBase = cHaveBase; |
---|
| 998 | |
---|
| 999 | |
---|
| 1000 | // Is extra system calibration data available? |
---|
| 1001 | cExtraSysCal = 0; |
---|
| 1002 | for (int iparm = REFBEAM; iparm < NDATA; iparm++) { |
---|
| 1003 | if (cData[iparm].colnum >= 0) { |
---|
| 1004 | cExtraSysCal = 1; |
---|
| 1005 | break; |
---|
| 1006 | } |
---|
| 1007 | } |
---|
| 1008 | |
---|
| 1009 | extraSysCal = cExtraSysCal; |
---|
| 1010 | |
---|
| 1011 | |
---|
| 1012 | // Extras for ALFA data. |
---|
| 1013 | cALFAacc = 0.0f; |
---|
| 1014 | if (cALFA_CIMA > 1) { |
---|
| 1015 | // FFTs per second when the Mock correlator operates in RFI blanking mode. |
---|
| 1016 | readData("PHFFTACC", TFLOAT, 0, &cALFAacc); |
---|
| 1017 | } |
---|
| 1018 | |
---|
| 1019 | |
---|
| 1020 | cRow = 0; |
---|
| 1021 | cTimeIdx = cNAxisTime; |
---|
| 1022 | |
---|
| 1023 | return 0; |
---|
| 1024 | } |
---|
| 1025 | |
---|
| 1026 | //---------------------------------------------------- GBTFITSreader::getHeader |
---|
| 1027 | |
---|
| 1028 | // Get parameters describing the data. |
---|
| 1029 | |
---|
| 1030 | int GBTFITSreader::getHeader( |
---|
| 1031 | char observer[32], |
---|
| 1032 | char project[32], |
---|
| 1033 | char telescope[32], |
---|
| 1034 | double antPos[3], |
---|
| 1035 | char obsMode[32], |
---|
| 1036 | char bunit[32], |
---|
| 1037 | float &equinox, |
---|
| 1038 | char radecsys[32], |
---|
| 1039 | char dopplerFrame[32], |
---|
| 1040 | char datobs[32], |
---|
| 1041 | double &utc, |
---|
| 1042 | double &refFreq, |
---|
| 1043 | double &bandwidth) |
---|
| 1044 | { |
---|
| 1045 | const string methodName = "getHeader()" ; |
---|
| 1046 | |
---|
| 1047 | // Has the file been opened? |
---|
| 1048 | if (!cSDptr) { |
---|
| 1049 | return 1; |
---|
| 1050 | } |
---|
| 1051 | |
---|
| 1052 | // Read parameter values. |
---|
| 1053 | readParm("OBSERVER", TSTRING, observer); // Shared. |
---|
| 1054 | readParm("PROJID", TSTRING, project); // Shared. |
---|
| 1055 | readParm("TELESCOP", TSTRING, telescope); // Core. |
---|
| 1056 | |
---|
| 1057 | antPos[0] = 0.0; |
---|
| 1058 | antPos[1] = 0.0; |
---|
| 1059 | antPos[2] = 0.0; |
---|
| 1060 | if (readParm("ANTENNA_POSITION", TDOUBLE, antPos)) { |
---|
| 1061 | readParm("OBSGEO-X", TDOUBLE, antPos); // Additional. |
---|
| 1062 | readParm("OBSGEO-Y", TDOUBLE, antPos + 1); // Additional. |
---|
| 1063 | readParm("OBSGEO-Z", TDOUBLE, antPos + 2); // Additional. |
---|
| 1064 | } |
---|
| 1065 | |
---|
| 1066 | if (antPos[0] == 0.0) { |
---|
| 1067 | if (cGBT) { |
---|
| 1068 | readParm( "SITELONG", TDOUBLE, antPos ) ; |
---|
| 1069 | readParm( "SITELAT", TDOUBLE, antPos+1 ) ; |
---|
| 1070 | readParm( "SITEELEV", TDOUBLE, antPos+2 ) ; |
---|
| 1071 | Vector<Double> pos( 2 ) ; |
---|
| 1072 | pos[0] = Double( antPos[0] ) ; |
---|
| 1073 | pos[1] = Double( antPos[1] ) ; |
---|
| 1074 | MPosition mp( MVPosition( Quantity( Double(antPos[2]), "m" ), |
---|
| 1075 | Quantum< Vector<Double> >( pos, "deg" ) ), |
---|
| 1076 | MPosition::WGS84 ) ; |
---|
| 1077 | MeasFrame mFrame( mp ) ; |
---|
| 1078 | MVPosition mvp ; |
---|
| 1079 | mFrame.getITRF( mvp ) ; |
---|
| 1080 | Vector<Double> antPosVec = mvp.getValue() ; |
---|
| 1081 | antPos[0] = (double)antPosVec[0] ; |
---|
| 1082 | antPos[1] = (double)antPosVec[1] ; |
---|
| 1083 | antPos[2] = (double)antPosVec[2] ; |
---|
| 1084 | } |
---|
| 1085 | else if (strncmp(telescope, "ATPKS", 5) == 0) { |
---|
| 1086 | // Parkes coordinates. |
---|
| 1087 | antPos[0] = -4554232.087; |
---|
| 1088 | antPos[1] = 2816759.046; |
---|
| 1089 | antPos[2] = -3454035.950; |
---|
| 1090 | } else if (strncmp(telescope, "ATMOPRA", 7) == 0) { |
---|
| 1091 | // Mopra coordinates. |
---|
| 1092 | antPos[0] = -4682768.630; |
---|
| 1093 | antPos[1] = 2802619.060; |
---|
| 1094 | antPos[2] = -3291759.900; |
---|
| 1095 | } else if (strncmp(telescope, "ARECIBO", 7) == 0) { |
---|
| 1096 | // Arecibo coordinates. |
---|
| 1097 | antPos[0] = 2390486.900; |
---|
| 1098 | antPos[1] = -5564731.440; |
---|
| 1099 | antPos[2] = 1994720.450; |
---|
| 1100 | } |
---|
| 1101 | } |
---|
| 1102 | |
---|
| 1103 | readData(OBSMODE, 1, obsMode); // Shared. |
---|
| 1104 | |
---|
| 1105 | // Brightness unit. |
---|
| 1106 | if (cData[DATAXED].colnum >= 0) { |
---|
| 1107 | strcpy(bunit, "Jy"); |
---|
| 1108 | } else { |
---|
| 1109 | strcpy(bunit, cData[DATA].units); |
---|
| 1110 | } |
---|
| 1111 | |
---|
| 1112 | if (strcmp(bunit, "JY") == 0) { |
---|
| 1113 | bunit[1] = 'y'; |
---|
| 1114 | } else if (strcmp(bunit, "JY/BEAM") == 0) { |
---|
| 1115 | strcpy(bunit, "Jy/beam"); |
---|
| 1116 | } |
---|
| 1117 | |
---|
| 1118 | readParm("EQUINOX", TFLOAT, &equinox); // Shared. |
---|
| 1119 | if (cStatus == 405) { |
---|
| 1120 | // EQUINOX was written as string value in early versions. |
---|
| 1121 | cStatus = 0; |
---|
| 1122 | char strtmp[32]; |
---|
| 1123 | readParm("EQUINOX", TSTRING, strtmp); |
---|
| 1124 | sscanf(strtmp, "%f", &equinox); |
---|
| 1125 | } |
---|
| 1126 | |
---|
| 1127 | if (readParm("RADESYS", TSTRING, radecsys)) { // Additional. |
---|
| 1128 | if (readParm("RADECSYS", TSTRING, radecsys)) { // Additional. |
---|
| 1129 | strcpy(radecsys, ""); |
---|
| 1130 | } |
---|
| 1131 | } |
---|
| 1132 | |
---|
| 1133 | if (readParm("SPECSYS", TSTRING, dopplerFrame)) { // Additional. |
---|
| 1134 | // Fallback value. |
---|
| 1135 | strcpy(dopplerFrame, "TOPOCENT"); |
---|
| 1136 | |
---|
| 1137 | // Look for VELFRAME, written by earlier versions of Livedata. |
---|
| 1138 | // |
---|
| 1139 | // Added few more codes currently (as of 2009 Oct) used in the GBT |
---|
| 1140 | // SDFITS (based io_sdfits_define.pro of GBTIDL). - TT |
---|
| 1141 | if (readParm("VELFRAME", TSTRING, dopplerFrame)) { // Additional. |
---|
| 1142 | // No, try digging it out of the CTYPE card (AIPS convention). |
---|
| 1143 | char keyw[9], ctype[9]; |
---|
| 1144 | sprintf(keyw, "CTYPE%ld", cFreqAxis+1); |
---|
| 1145 | readParm(keyw, TSTRING, ctype); |
---|
| 1146 | |
---|
| 1147 | if (strncmp(ctype, "FREQ-", 5) == 0) { |
---|
| 1148 | strcpy(dopplerFrame, ctype+5); |
---|
| 1149 | if (strcmp(dopplerFrame, "LSR") == 0) { |
---|
| 1150 | // LSR unqualified usually means LSR (kinematic). |
---|
| 1151 | strcpy(dopplerFrame, "LSRK"); |
---|
| 1152 | } else if (strcmp(dopplerFrame, "LSD") == 0) { |
---|
| 1153 | // LSR as a dynamical defintion |
---|
| 1154 | strcpy(dopplerFrame, "LSRD"); |
---|
| 1155 | } else if (strcmp(dopplerFrame, "HEL") == 0) { |
---|
| 1156 | // Almost certainly barycentric. |
---|
| 1157 | strcpy(dopplerFrame, "BARYCENT"); |
---|
| 1158 | } else if (strcmp(dopplerFrame, "BAR") == 0) { |
---|
| 1159 | // barycentric. |
---|
| 1160 | strcpy(dopplerFrame, "BARYCENT"); |
---|
| 1161 | } else if (strcmp(dopplerFrame, "OBS") == 0) { |
---|
| 1162 | strcpy(dopplerFrame, "TOPO"); |
---|
| 1163 | } else if (strcmp(dopplerFrame, "GEO") == 0) { |
---|
| 1164 | // geocentric |
---|
| 1165 | strcpy(dopplerFrame, "GEO"); |
---|
| 1166 | } else if (strcmp(dopplerFrame, "GAL") == 0) { |
---|
| 1167 | // galactic |
---|
| 1168 | strcpy(dopplerFrame, "GAL"); |
---|
| 1169 | } else if (strcmp(dopplerFrame, "LGR") == 0) { |
---|
| 1170 | // Local group |
---|
| 1171 | strcpy(dopplerFrame, "LGROUP"); |
---|
| 1172 | } else if (strcmp(dopplerFrame, "CMB") == 0) { |
---|
| 1173 | // Cosimic Microwave Backgroup |
---|
| 1174 | strcpy(dopplerFrame, "CMB"); |
---|
| 1175 | } |
---|
| 1176 | } else { |
---|
| 1177 | strcpy(dopplerFrame, ""); |
---|
| 1178 | } |
---|
| 1179 | } |
---|
| 1180 | |
---|
| 1181 | // always LSRK if GBT data |
---|
| 1182 | if (cGBT) { |
---|
| 1183 | strcpy(dopplerFrame, "LSRK"); |
---|
| 1184 | } |
---|
| 1185 | |
---|
| 1186 | |
---|
| 1187 | // Translate to FITS standard names. |
---|
| 1188 | if (strncmp(dopplerFrame, "TOP", 3) == 0) { |
---|
| 1189 | strcpy(dopplerFrame, "TOPOCENT"); |
---|
| 1190 | } else if (strncmp(dopplerFrame, "GEO", 3) == 0) { |
---|
| 1191 | strcpy(dopplerFrame, "GEOCENTR"); |
---|
| 1192 | } else if (strncmp(dopplerFrame, "HEL", 3) == 0) { |
---|
| 1193 | strcpy(dopplerFrame, "HELIOCEN"); |
---|
| 1194 | } else if (strncmp(dopplerFrame, "BARY", 4) == 0) { |
---|
| 1195 | strcpy(dopplerFrame, "BARYCENT"); |
---|
| 1196 | } else if (strncmp(dopplerFrame, "GAL", 3) == 0) { |
---|
| 1197 | strcpy(dopplerFrame, "GALACTOC"); |
---|
| 1198 | } else if (strncmp(dopplerFrame, "LGROUP", 6) == 0) { |
---|
| 1199 | strcpy(dopplerFrame, "LOCALGRP"); |
---|
| 1200 | } else if (strncmp(dopplerFrame, "CMB", 3) == 0) { |
---|
| 1201 | strcpy(dopplerFrame, "CMBDIPOL"); |
---|
| 1202 | } |
---|
| 1203 | } |
---|
| 1204 | |
---|
| 1205 | if (cStatus) { |
---|
| 1206 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1207 | return 1; |
---|
| 1208 | } |
---|
| 1209 | |
---|
| 1210 | // Get parameters from first row of table. |
---|
| 1211 | readTime(1, 1, datobs, utc); |
---|
| 1212 | readData(FqRefVal, 1, &refFreq); |
---|
| 1213 | readParm("BANDWID", TDOUBLE, &bandwidth); // Core. |
---|
| 1214 | |
---|
| 1215 | if (cStatus) { |
---|
| 1216 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1217 | return 1; |
---|
| 1218 | } |
---|
| 1219 | |
---|
| 1220 | return 0; |
---|
| 1221 | } |
---|
| 1222 | |
---|
| 1223 | //-------------------------------------------------- GBTFITSreader::getFreqInfo |
---|
| 1224 | |
---|
| 1225 | // Get frequency parameters for each IF. |
---|
| 1226 | |
---|
| 1227 | int GBTFITSreader::getFreqInfo( |
---|
| 1228 | int &nIF, |
---|
| 1229 | double* &startFreq, |
---|
| 1230 | double* &endFreq) |
---|
| 1231 | { |
---|
| 1232 | const string methodName = "getFreqInfo()" ; |
---|
| 1233 | |
---|
| 1234 | float fqRefPix; |
---|
| 1235 | double fqDelt, fqRefVal; |
---|
| 1236 | |
---|
| 1237 | nIF = cNIF; |
---|
| 1238 | startFreq = new double[nIF]; |
---|
| 1239 | endFreq = new double[nIF]; |
---|
| 1240 | |
---|
| 1241 | if (cData[IF].colnum > 0) { |
---|
| 1242 | short *IFCol = new short[cNRow]; |
---|
| 1243 | short IFNul = 1; |
---|
| 1244 | int anynul; |
---|
| 1245 | if (fits_read_col(cSDptr, TSHORT, cData[IF].colnum, 1, 1, cNRow, |
---|
| 1246 | &IFNul, IFCol, &anynul, &cStatus)) { |
---|
| 1247 | delete [] IFCol; |
---|
| 1248 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1249 | close(); |
---|
| 1250 | return 1; |
---|
| 1251 | } |
---|
| 1252 | |
---|
| 1253 | for (int iIF = 0; iIF < nIF; iIF++) { |
---|
| 1254 | if (cIFs[iIF]) { |
---|
| 1255 | // Find the first occurrence of this IF in the table. |
---|
| 1256 | int IFno = iIF + cIF_1rel; |
---|
| 1257 | for (int irow = 0; irow < cNRow;) { |
---|
| 1258 | if (IFCol[irow++] == IFno) { |
---|
| 1259 | readData(FqRefPix, irow, &fqRefPix); |
---|
| 1260 | readData(FqRefVal, irow, &fqRefVal); |
---|
| 1261 | readData(FqDelt, irow, &fqDelt); |
---|
| 1262 | |
---|
| 1263 | if (cALFA_BD) { |
---|
| 1264 | unsigned char invert; |
---|
| 1265 | readData("UPPERSB", TBYTE, irow, &invert); |
---|
| 1266 | |
---|
| 1267 | if (invert) { |
---|
| 1268 | fqDelt = -fqDelt; |
---|
| 1269 | } |
---|
| 1270 | } |
---|
| 1271 | |
---|
| 1272 | startFreq[iIF] = fqRefVal + ( 1 - fqRefPix) * fqDelt; |
---|
| 1273 | endFreq[iIF] = fqRefVal + (cNChan[iIF] - fqRefPix) * fqDelt; |
---|
| 1274 | |
---|
| 1275 | break; |
---|
| 1276 | } |
---|
| 1277 | } |
---|
| 1278 | |
---|
| 1279 | } else { |
---|
| 1280 | startFreq[iIF] = 0.0; |
---|
| 1281 | endFreq[iIF] = 0.0; |
---|
| 1282 | } |
---|
| 1283 | } |
---|
| 1284 | |
---|
| 1285 | delete [] IFCol; |
---|
| 1286 | |
---|
| 1287 | } else { |
---|
| 1288 | // No IF column, read the first table entry. |
---|
| 1289 | readData(FqRefPix, 1, &fqRefPix); |
---|
| 1290 | readData(FqRefVal, 1, &fqRefVal); |
---|
| 1291 | readData(FqDelt, 1, &fqDelt); |
---|
| 1292 | |
---|
| 1293 | startFreq[0] = fqRefVal + ( 1 - fqRefPix) * fqDelt; |
---|
| 1294 | endFreq[0] = fqRefVal + (cNChan[0] - fqRefPix) * fqDelt; |
---|
| 1295 | } |
---|
| 1296 | |
---|
| 1297 | return cStatus; |
---|
| 1298 | } |
---|
| 1299 | |
---|
| 1300 | //---------------------------------------------------- GBTFITSreader::findRange |
---|
| 1301 | |
---|
| 1302 | // Find the range of the data in time and position. |
---|
| 1303 | |
---|
| 1304 | int GBTFITSreader::findRange( |
---|
| 1305 | int &nRow, |
---|
| 1306 | int &nSel, |
---|
| 1307 | char dateSpan[2][32], |
---|
| 1308 | double utcSpan[2], |
---|
| 1309 | double* &positions) |
---|
| 1310 | { |
---|
| 1311 | const string methodName = "findRange()" ; |
---|
| 1312 | |
---|
| 1313 | // Has the file been opened? |
---|
| 1314 | if (!cSDptr) { |
---|
| 1315 | return 1; |
---|
| 1316 | } |
---|
| 1317 | |
---|
| 1318 | nRow = cNRow; |
---|
| 1319 | |
---|
| 1320 | // Find the number of rows selected. |
---|
| 1321 | short *sel = new short[cNRow]; |
---|
| 1322 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1323 | sel[irow] = 1; |
---|
| 1324 | } |
---|
| 1325 | |
---|
| 1326 | int anynul; |
---|
| 1327 | if (cData[BEAM].colnum > 0) { |
---|
| 1328 | short *beamCol = new short[cNRow]; |
---|
| 1329 | short beamNul = 1; |
---|
| 1330 | if (fits_read_col(cSDptr, TSHORT, cData[BEAM].colnum, 1, 1, cNRow, |
---|
| 1331 | &beamNul, beamCol, &anynul, &cStatus)) { |
---|
| 1332 | delete [] beamCol; |
---|
| 1333 | delete [] sel; |
---|
| 1334 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1335 | return 1; |
---|
| 1336 | } |
---|
| 1337 | |
---|
| 1338 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1339 | if (!cBeams[beamCol[irow]-cBeam_1rel]) { |
---|
| 1340 | sel[irow] = 0; |
---|
| 1341 | } |
---|
| 1342 | } |
---|
| 1343 | |
---|
| 1344 | delete [] beamCol; |
---|
| 1345 | } |
---|
| 1346 | |
---|
| 1347 | if (cData[IF].colnum > 0) { |
---|
| 1348 | short *IFCol = new short[cNRow]; |
---|
| 1349 | short IFNul = 1; |
---|
| 1350 | if (fits_read_col(cSDptr, TSHORT, cData[IF].colnum, 1, 1, cNRow, |
---|
| 1351 | &IFNul, IFCol, &anynul, &cStatus)) { |
---|
| 1352 | delete [] IFCol; |
---|
| 1353 | delete [] sel; |
---|
| 1354 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1355 | return 1; |
---|
| 1356 | } |
---|
| 1357 | |
---|
| 1358 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1359 | if (!cIFs[IFCol[irow]-cIF_1rel]) { |
---|
| 1360 | sel[irow] = 0; |
---|
| 1361 | } |
---|
| 1362 | } |
---|
| 1363 | |
---|
| 1364 | delete [] IFCol; |
---|
| 1365 | } |
---|
| 1366 | |
---|
| 1367 | nSel = 0; |
---|
| 1368 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1369 | nSel += sel[irow]; |
---|
| 1370 | } |
---|
| 1371 | |
---|
| 1372 | |
---|
| 1373 | // Find the time range assuming the data is in chronological order. |
---|
| 1374 | readTime(1, 1, dateSpan[0], utcSpan[0]); |
---|
| 1375 | readTime(cNRow, cNAxisTime, dateSpan[1], utcSpan[1]); |
---|
| 1376 | |
---|
| 1377 | |
---|
| 1378 | // Retrieve positions for selected data. |
---|
| 1379 | int isel = 0; |
---|
| 1380 | positions = new double[2*nSel]; |
---|
| 1381 | |
---|
| 1382 | if (cCoordSys == 1) { |
---|
| 1383 | // Horizontal (Az,El). |
---|
| 1384 | if (cData[AZIMUTH].colnum < 0 || |
---|
| 1385 | cData[ELEVATIO].colnum < 0) { |
---|
| 1386 | log(LogOrigin( className, methodName, WHERE ), LogIO::WARN, "Azimuth/elevation information absent."); |
---|
| 1387 | cStatus = -1; |
---|
| 1388 | |
---|
| 1389 | } else { |
---|
| 1390 | float *az = new float[cNRow]; |
---|
| 1391 | float *el = new float[cNRow]; |
---|
| 1392 | readCol(AZIMUTH, az); |
---|
| 1393 | readCol(ELEVATIO, el); |
---|
| 1394 | |
---|
| 1395 | if (!cStatus) { |
---|
| 1396 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1397 | if (sel[irow]) { |
---|
| 1398 | positions[isel++] = az[irow] * D2R; |
---|
| 1399 | positions[isel++] = el[irow] * D2R; |
---|
| 1400 | } |
---|
| 1401 | } |
---|
| 1402 | } |
---|
| 1403 | |
---|
| 1404 | delete [] az; |
---|
| 1405 | delete [] el; |
---|
| 1406 | } |
---|
| 1407 | |
---|
| 1408 | } else if (cCoordSys == 3) { |
---|
| 1409 | // ZPA-EL. |
---|
| 1410 | if (cData[BEAM].colnum < 0 || |
---|
| 1411 | cData[FOCUSROT].colnum < 0 || |
---|
| 1412 | cData[ELEVATIO].colnum < 0) { |
---|
| 1413 | log(LogOrigin( className, methodName, WHERE ), LogIO::WARN, "ZPA/elevation information absent."); |
---|
| 1414 | cStatus = -1; |
---|
| 1415 | |
---|
| 1416 | } else { |
---|
| 1417 | short *beam = new short[cNRow]; |
---|
| 1418 | float *rot = new float[cNRow]; |
---|
| 1419 | float *el = new float[cNRow]; |
---|
| 1420 | readCol(BEAM, beam); |
---|
| 1421 | readCol(FOCUSROT, rot); |
---|
| 1422 | readCol(ELEVATIO, el); |
---|
| 1423 | |
---|
| 1424 | if (!cStatus) { |
---|
| 1425 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1426 | if (sel[irow]) { |
---|
| 1427 | Int beamNo = beam[irow]; |
---|
| 1428 | Double zpa = rot[irow]; |
---|
| 1429 | if (beamNo > 1) { |
---|
| 1430 | // Beam geometry for the Parkes multibeam. |
---|
| 1431 | if (beamNo < 8) { |
---|
| 1432 | zpa += -60.0 + 60.0*(beamNo-2); |
---|
| 1433 | } else { |
---|
| 1434 | zpa += -90.0 + 60.0*(beamNo-8); |
---|
| 1435 | } |
---|
| 1436 | |
---|
| 1437 | if (zpa < -180.0) { |
---|
| 1438 | zpa += 360.0; |
---|
| 1439 | } else if (zpa > 180.0) { |
---|
| 1440 | zpa -= 360.0; |
---|
| 1441 | } |
---|
| 1442 | } |
---|
| 1443 | |
---|
| 1444 | positions[isel++] = zpa * D2R; |
---|
| 1445 | positions[isel++] = el[irow] * D2R; |
---|
| 1446 | } |
---|
| 1447 | } |
---|
| 1448 | } |
---|
| 1449 | |
---|
| 1450 | delete [] beam; |
---|
| 1451 | delete [] rot; |
---|
| 1452 | delete [] el; |
---|
| 1453 | } |
---|
| 1454 | |
---|
| 1455 | } else { |
---|
| 1456 | double *ra = new double[cNRow]; |
---|
| 1457 | double *dec = new double[cNRow]; |
---|
| 1458 | readCol(RA, ra); |
---|
| 1459 | readCol(DEC, dec); |
---|
| 1460 | |
---|
| 1461 | if (cStatus) { |
---|
| 1462 | delete [] ra; |
---|
| 1463 | delete [] dec; |
---|
| 1464 | goto cleanup; |
---|
| 1465 | } |
---|
| 1466 | |
---|
| 1467 | if (cALFA_BD) { |
---|
| 1468 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1469 | // Convert hours to degrees. |
---|
| 1470 | ra[irow] *= 15.0; |
---|
| 1471 | } |
---|
| 1472 | } |
---|
| 1473 | |
---|
| 1474 | if (cCoordSys == 0) { |
---|
| 1475 | // Equatorial (RA,Dec). |
---|
| 1476 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1477 | if (sel[irow]) { |
---|
| 1478 | positions[isel++] = ra[irow] * D2R; |
---|
| 1479 | positions[isel++] = dec[irow] * D2R; |
---|
| 1480 | } |
---|
| 1481 | } |
---|
| 1482 | |
---|
| 1483 | } else if (cCoordSys == 2) { |
---|
| 1484 | // Feed-plane. |
---|
| 1485 | if (cData[OBJ_RA].colnum < 0 || |
---|
| 1486 | cData[OBJ_DEC].colnum < 0 || |
---|
| 1487 | cData[PARANGLE].colnum < 0 || |
---|
| 1488 | cData[FOCUSROT].colnum < 0) { |
---|
| 1489 | log( LogOrigin( className, methodName, WHERE ), LogIO::WARN, |
---|
| 1490 | "Insufficient information to compute feed-plane\n" |
---|
| 1491 | " coordinates."); |
---|
| 1492 | cStatus = -1; |
---|
| 1493 | |
---|
| 1494 | } else { |
---|
| 1495 | double *srcRA = new double[cNRow]; |
---|
| 1496 | double *srcDec = new double[cNRow]; |
---|
| 1497 | float *par = new float[cNRow]; |
---|
| 1498 | float *rot = new float[cNRow]; |
---|
| 1499 | |
---|
| 1500 | readCol(OBJ_RA, srcRA); |
---|
| 1501 | readCol(OBJ_DEC, srcDec); |
---|
| 1502 | readCol(PARANGLE, par); |
---|
| 1503 | readCol(FOCUSROT, rot); |
---|
| 1504 | |
---|
| 1505 | if (!cStatus) { |
---|
| 1506 | for (int irow = 0; irow < cNRow; irow++) { |
---|
| 1507 | if (sel[irow]) { |
---|
| 1508 | // Convert to feed-plane coordinates. |
---|
| 1509 | Double dist, pa; |
---|
| 1510 | distPA(ra[irow]*D2R, dec[irow]*D2R, srcRA[irow]*D2R, |
---|
| 1511 | srcDec[irow]*D2R, dist, pa); |
---|
| 1512 | |
---|
| 1513 | Double spin = (par[irow] + rot[irow])*D2R - pa; |
---|
| 1514 | if (spin > 2.0*PI) spin -= 2.0*PI; |
---|
| 1515 | Double squint = PI/2.0 - dist; |
---|
| 1516 | |
---|
| 1517 | positions[isel++] = spin; |
---|
| 1518 | positions[isel++] = squint; |
---|
| 1519 | } |
---|
| 1520 | } |
---|
| 1521 | } |
---|
| 1522 | |
---|
| 1523 | delete [] srcRA; |
---|
| 1524 | delete [] srcDec; |
---|
| 1525 | delete [] par; |
---|
| 1526 | delete [] rot; |
---|
| 1527 | } |
---|
| 1528 | } |
---|
| 1529 | |
---|
| 1530 | delete [] ra; |
---|
| 1531 | delete [] dec; |
---|
| 1532 | } |
---|
| 1533 | |
---|
| 1534 | cleanup: |
---|
| 1535 | delete [] sel; |
---|
| 1536 | |
---|
| 1537 | if (cStatus) { |
---|
| 1538 | nSel = 0; |
---|
| 1539 | delete [] positions; |
---|
| 1540 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1541 | cStatus = 0; |
---|
| 1542 | return 1; |
---|
| 1543 | } |
---|
| 1544 | |
---|
| 1545 | return 0; |
---|
| 1546 | } |
---|
| 1547 | |
---|
| 1548 | |
---|
| 1549 | //--------------------------------------------------------- GBTFITSreader::read |
---|
| 1550 | |
---|
| 1551 | // Read the next data record. |
---|
| 1552 | |
---|
| 1553 | int GBTFITSreader::read( |
---|
| 1554 | MBrecord &mbrec) |
---|
| 1555 | { |
---|
| 1556 | const string methodName = "read()" ; |
---|
| 1557 | |
---|
| 1558 | // for multiple binary table |
---|
| 1559 | long cRowR = -1 ; |
---|
| 1560 | |
---|
| 1561 | // Has the file been opened? |
---|
| 1562 | if (!cSDptr) { |
---|
| 1563 | return 1; |
---|
| 1564 | } |
---|
| 1565 | // Find the next selected beam and IF. |
---|
| 1566 | short iBeam = 0, iIF = 0; |
---|
| 1567 | int iPol = -1 ; |
---|
| 1568 | while (1) { |
---|
| 1569 | if (++cTimeIdx > cNAxisTime) { |
---|
| 1570 | if (++cRow > cNRow) break; |
---|
| 1571 | cTimeIdx = 1; |
---|
| 1572 | } |
---|
| 1573 | |
---|
| 1574 | //cRowR = cRow ; |
---|
| 1575 | cRowR = cRowRelative( cRow ) ; |
---|
| 1576 | |
---|
| 1577 | if (cData[BEAM].colnum > 0) { |
---|
| 1578 | readData(BEAM, cRowR, &iBeam); |
---|
| 1579 | |
---|
| 1580 | // Convert to 0-relative. |
---|
| 1581 | if (cBeam_1rel) iBeam--; |
---|
| 1582 | } |
---|
| 1583 | |
---|
| 1584 | |
---|
| 1585 | if (cBeams[iBeam]) { |
---|
| 1586 | if (cData[IF].colnum > 0) { |
---|
| 1587 | readData(IF, cRowR, &iIF); |
---|
| 1588 | |
---|
| 1589 | // Convert to 0-relative. |
---|
| 1590 | if (cIF_1rel) iIF--; |
---|
| 1591 | } |
---|
| 1592 | |
---|
| 1593 | if (cIFs[iIF]) { |
---|
| 1594 | if (cALFA) { |
---|
| 1595 | // ALFA data, check for calibration data. |
---|
| 1596 | char chars[32]; |
---|
| 1597 | readData(OBSMODE, cRowR, chars); |
---|
| 1598 | if (strcmp(chars, "DROP") == 0) { |
---|
| 1599 | // Completely flagged integration. |
---|
| 1600 | continue; |
---|
| 1601 | |
---|
| 1602 | } else if (strcmp(chars, "CAL") == 0) { |
---|
| 1603 | sReset = 1; |
---|
| 1604 | if (cALFA_CIMA > 1) { |
---|
| 1605 | for (short iPol = 0; iPol < cNPol[iIF]; iPol++) { |
---|
| 1606 | alfaCal(iBeam, iIF, iPol); |
---|
| 1607 | } |
---|
| 1608 | continue; |
---|
| 1609 | } else { |
---|
| 1610 | // iIF is really the polarization in older ALFA data. |
---|
| 1611 | alfaCal(iBeam, 0, iIF); |
---|
| 1612 | continue; |
---|
| 1613 | } |
---|
| 1614 | |
---|
| 1615 | } else { |
---|
| 1616 | // Reset for the next CAL record. |
---|
| 1617 | if (sReset) { |
---|
| 1618 | for (short iPol = 0; iPol < cNPol[iIF]; iPol++) { |
---|
| 1619 | sALFAcalNon[iBeam][iPol] = 0; |
---|
| 1620 | sALFAcalNoff[iBeam][iPol] = 0; |
---|
| 1621 | sALFAcalOn[iBeam][iPol] = 0.0f; |
---|
| 1622 | sALFAcalOff[iBeam][iPol] = 0.0f; |
---|
| 1623 | } |
---|
| 1624 | sReset = 0; |
---|
| 1625 | |
---|
| 1626 | sprintf(cMsg, "ALFA cal factors for beam %d: %.3e, %.3e", |
---|
| 1627 | iBeam+1, sALFAcal[iBeam][0], sALFAcal[iBeam][1]); |
---|
| 1628 | log(LogOrigin( className, methodName, WHERE ), LogIO::NORMAL, cMsg); |
---|
| 1629 | //logMsg(cMsg); |
---|
| 1630 | } |
---|
| 1631 | } |
---|
| 1632 | } |
---|
| 1633 | |
---|
| 1634 | // for GBT SDFITS |
---|
| 1635 | if (cData[STOKES].colnum > 0 ) { |
---|
| 1636 | readData(STOKES, cRowR, &iPol ) ; |
---|
| 1637 | for ( int i = 0 ; i < cNPol[iIF] ; i++ ) { |
---|
| 1638 | if ( cPols[i] == iPol ) { |
---|
| 1639 | iPol = i ; |
---|
| 1640 | break ; |
---|
| 1641 | } |
---|
| 1642 | } |
---|
| 1643 | } |
---|
| 1644 | break; |
---|
| 1645 | } |
---|
| 1646 | } |
---|
| 1647 | } |
---|
| 1648 | |
---|
| 1649 | // EOF? |
---|
| 1650 | if (cRow > cNRow) { |
---|
| 1651 | return -1; |
---|
| 1652 | } |
---|
| 1653 | |
---|
| 1654 | int idx_GBT = 0 ; |
---|
| 1655 | if ( numHDU > 1 ) { |
---|
| 1656 | char sampler[10]; |
---|
| 1657 | readData(SAMPLER,cRowR,sampler); |
---|
| 1658 | readData(RESTFRQ, cRowR, &mbrec.restFreq); |
---|
| 1659 | int iiIF = 0 ; |
---|
| 1660 | int hduid ; |
---|
| 1661 | fits_get_hdu_num( cSDptr, &hduid ) ; |
---|
| 1662 | while ( iiIF < numHDU && hduId[iiIF] != hduid ) { |
---|
| 1663 | //iiIF++ ; |
---|
| 1664 | idx_GBT += cNumKeys[iiIF++] ; |
---|
| 1665 | } |
---|
| 1666 | char sarf[48] ; |
---|
| 1667 | sprintf( sarf, "%d/%s/%lf", iiIF, sampler, mbrec.restFreq ) ; |
---|
| 1668 | String sr = String( sarf ) ; |
---|
| 1669 | while ( idx_GBT < (int)cRefValKey.size() && sr != cRefValKey[idx_GBT] ) |
---|
| 1670 | idx_GBT++ ; |
---|
| 1671 | iIF = (short)cIFNO[idx_GBT] ; |
---|
| 1672 | sprintf( cMsg, "iIF = %d (key=%s), cRow = %ld" , iIF, sarf, cRow ) ; |
---|
| 1673 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
| 1674 | } |
---|
| 1675 | |
---|
| 1676 | if (cALFA) { |
---|
| 1677 | int scanNo; |
---|
| 1678 | readData(SCAN, cRowR, &scanNo); |
---|
| 1679 | if (scanNo != cALFAscan) { |
---|
| 1680 | cScanNo++; |
---|
| 1681 | cALFAscan = scanNo; |
---|
| 1682 | } |
---|
| 1683 | mbrec.scanNo = cScanNo; |
---|
| 1684 | |
---|
| 1685 | } else { |
---|
| 1686 | readData(SCAN, cRowR, &mbrec.scanNo); |
---|
| 1687 | |
---|
| 1688 | // Ensure that scan number is 1-relative. |
---|
| 1689 | mbrec.scanNo -= (cFirstScanNo - 1); |
---|
| 1690 | } |
---|
| 1691 | |
---|
| 1692 | // Times. |
---|
| 1693 | char datobs[32]; |
---|
| 1694 | readTime(cRowR, cTimeIdx, datobs, mbrec.utc); |
---|
| 1695 | strcpy(mbrec.datobs, datobs); |
---|
| 1696 | |
---|
| 1697 | if (cData[CYCLE].colnum > 0) { |
---|
| 1698 | readData(CYCLE, cRowR, &mbrec.cycleNo); |
---|
| 1699 | mbrec.cycleNo += cTimeIdx - 1; |
---|
| 1700 | if (cALFA_BD) mbrec.cycleNo++; |
---|
| 1701 | } else { |
---|
| 1702 | // Cycle number not recorded, must do our own bookkeeping. |
---|
| 1703 | if (mbrec.utc != cLastUTC) { |
---|
| 1704 | mbrec.cycleNo = ++cCycleNo; |
---|
| 1705 | cLastUTC = mbrec.utc; |
---|
| 1706 | } |
---|
| 1707 | } |
---|
| 1708 | |
---|
| 1709 | if ( iPol != -1 ) { |
---|
| 1710 | if ( mbrec.scanNo != cGLastScan[iPol] ) { |
---|
| 1711 | cGLastScan[iPol] = mbrec.scanNo ; |
---|
| 1712 | cGCycleNo[iPol] = 0 ; |
---|
| 1713 | mbrec.cycleNo = ++cGCycleNo[iPol] ; |
---|
| 1714 | } |
---|
| 1715 | else { |
---|
| 1716 | mbrec.cycleNo = ++cGCycleNo[iPol] ; |
---|
| 1717 | } |
---|
| 1718 | } |
---|
| 1719 | |
---|
| 1720 | readData(EXPOSURE, cRowR, &mbrec.exposure); |
---|
| 1721 | |
---|
| 1722 | // Source identification. |
---|
| 1723 | readData(OBJECT, cRowR, mbrec.srcName); |
---|
| 1724 | |
---|
| 1725 | if ( iPol != -1 ) { |
---|
| 1726 | char obsmode[32] ; |
---|
| 1727 | readData( OBSMODE, cRowR, obsmode ) ; |
---|
| 1728 | char sig[1] ; |
---|
| 1729 | char cal[1] ; |
---|
| 1730 | readData( SIG, cRowR, sig ) ; |
---|
| 1731 | readData( CAL, cRowR, cal ) ; |
---|
| 1732 | if ( strstr( obsmode, "PSWITCH" ) != NULL ) { |
---|
| 1733 | // position switch |
---|
| 1734 | //strcat( mbrec.srcName, "_p" ) ; |
---|
| 1735 | if ( strstr( obsmode, "PSWITCHON" ) != NULL ) { |
---|
| 1736 | //strcat( mbrec.srcName, "s" ) ; |
---|
| 1737 | mbrec.srcType = SrcType::PSON ; |
---|
| 1738 | } |
---|
| 1739 | else if ( strstr( obsmode, "PSWITCHOFF" ) != NULL ) { |
---|
| 1740 | //strcat( mbrec.srcName, "r" ) ; |
---|
| 1741 | mbrec.srcType = SrcType::PSOFF ; |
---|
| 1742 | } |
---|
| 1743 | } |
---|
| 1744 | else if ( strstr( obsmode, "Nod" ) != NULL ) { |
---|
| 1745 | // nod |
---|
| 1746 | //strcat( mbrec.srcName, "_n" ) ; |
---|
| 1747 | mbrec.srcType = SrcType::NOD ; |
---|
| 1748 | if ( sig[0] == 'T' ) { |
---|
| 1749 | //strcat( mbrec.srcName, "s" ) ; |
---|
| 1750 | } |
---|
| 1751 | else { |
---|
| 1752 | //strcat( mbrec.srcName, "r" ) ; |
---|
| 1753 | } |
---|
| 1754 | } |
---|
| 1755 | else if ( strstr( obsmode, "FSWITCH" ) != NULL ) { |
---|
| 1756 | // frequency switch |
---|
| 1757 | //strcat( mbrec.srcName, "_f" ) ; |
---|
| 1758 | if ( sig[0] == 'T' ) { |
---|
| 1759 | //strcat( mbrec.srcName, "s" ) ; |
---|
| 1760 | mbrec.srcType = SrcType::FSON ; |
---|
| 1761 | } |
---|
| 1762 | else { |
---|
| 1763 | //strcat( mbrec.srcName, "r" ) ; |
---|
| 1764 | mbrec.srcType = SrcType::FSOFF ; |
---|
| 1765 | } |
---|
| 1766 | } |
---|
| 1767 | if ( cal[0] == 'T' ) { |
---|
| 1768 | //strcat( mbrec.srcName, "c" ) ; |
---|
| 1769 | if ( mbrec.srcType == SrcType::PSON ) |
---|
| 1770 | mbrec.srcType = SrcType::PONCAL ; |
---|
| 1771 | else if ( mbrec.srcType == SrcType::PSOFF ) |
---|
| 1772 | mbrec.srcType = SrcType::POFFCAL ; |
---|
| 1773 | else if ( mbrec.srcType == SrcType::NOD ) |
---|
| 1774 | mbrec.srcType = SrcType::NODCAL ; |
---|
| 1775 | else if ( mbrec.srcType == SrcType::FSON ) |
---|
| 1776 | mbrec.srcType = SrcType::FONCAL ; |
---|
| 1777 | else if ( mbrec.srcType == SrcType::FSOFF ) |
---|
| 1778 | mbrec.srcType = SrcType::FOFFCAL ; |
---|
| 1779 | } |
---|
| 1780 | else { |
---|
| 1781 | //strcat( mbrec.srcName, "o" ) ; |
---|
| 1782 | } |
---|
| 1783 | } |
---|
| 1784 | |
---|
| 1785 | readData(OBJ_RA, cRowR, &mbrec.srcRA); |
---|
| 1786 | if (strcmp(cData[OBJ_RA].name, "OBJ-RA") == 0) { |
---|
| 1787 | mbrec.srcRA *= D2R; |
---|
| 1788 | } |
---|
| 1789 | |
---|
| 1790 | if (strcmp(cData[OBJ_DEC].name, "OBJ-DEC") == 0) { |
---|
| 1791 | readData(OBJ_DEC, cRowR, &mbrec.srcDec); |
---|
| 1792 | mbrec.srcDec *= D2R; |
---|
| 1793 | } |
---|
| 1794 | |
---|
| 1795 | // Line rest frequency (Hz). |
---|
| 1796 | readData(RESTFRQ, cRowR, &mbrec.restFreq); |
---|
| 1797 | if (mbrec.restFreq == 0.0 && cALFA_BD) { |
---|
| 1798 | mbrec.restFreq = 1420.40575e6; |
---|
| 1799 | } |
---|
| 1800 | |
---|
| 1801 | // Observation mode. |
---|
| 1802 | readData(OBSMODE, cRowR, mbrec.obsType); |
---|
| 1803 | |
---|
| 1804 | // Beam-dependent parameters. |
---|
| 1805 | mbrec.beamNo = iBeam + 1; |
---|
| 1806 | |
---|
| 1807 | readData(RA, cRowR, &mbrec.ra); |
---|
| 1808 | readData(DEC, cRowR, &mbrec.dec); |
---|
| 1809 | mbrec.ra *= D2R; |
---|
| 1810 | mbrec.dec *= D2R; |
---|
| 1811 | |
---|
| 1812 | if (cALFA_BD) mbrec.ra *= 15.0; |
---|
| 1813 | |
---|
| 1814 | float scanrate[2]; |
---|
| 1815 | readData(SCANRATE, cRowR, &scanrate); |
---|
| 1816 | if (strcmp(cData[SCANRATE].name, "SCANRATE") == 0) { |
---|
| 1817 | mbrec.raRate = scanrate[0] * D2R; |
---|
| 1818 | mbrec.decRate = scanrate[1] * D2R; |
---|
| 1819 | } |
---|
| 1820 | mbrec.paRate = 0.0f; |
---|
| 1821 | |
---|
| 1822 | // IF-dependent parameters. |
---|
| 1823 | int startChan = cStartChan[iIF]; |
---|
| 1824 | int endChan = cEndChan[iIF]; |
---|
| 1825 | int refChan = cRefChan[iIF]; |
---|
| 1826 | |
---|
| 1827 | // Allocate data storage. |
---|
| 1828 | int nChan = abs(endChan - startChan) + 1; |
---|
| 1829 | int nPol = cNPol[iIF]; |
---|
| 1830 | |
---|
| 1831 | if ( cData[STOKES].colnum > 0 ) |
---|
| 1832 | nPol = 1 ; |
---|
| 1833 | |
---|
| 1834 | if (cGetSpectra || cGetXPol) { |
---|
| 1835 | int nxpol = cGetXPol ? 2*nChan : 0; |
---|
| 1836 | mbrec.allocate(0, nChan*nPol, nxpol); |
---|
| 1837 | } |
---|
| 1838 | |
---|
| 1839 | mbrec.nIF = 1; |
---|
| 1840 | mbrec.IFno[0] = iIF + 1; |
---|
| 1841 | mbrec.nChan[0] = nChan; |
---|
| 1842 | mbrec.nPol[0] = nPol; |
---|
| 1843 | mbrec.polNo = iPol ; |
---|
| 1844 | |
---|
| 1845 | readData(FqRefPix, cRowR, mbrec.fqRefPix); |
---|
| 1846 | readData(FqRefVal, cRowR, mbrec.fqRefVal); |
---|
| 1847 | readData(FqDelt, cRowR, mbrec.fqDelt); |
---|
| 1848 | |
---|
| 1849 | // Convert frequency reference to LSRK if GBT TOPO |
---|
| 1850 | if ( cGBT ) { |
---|
| 1851 | char sampler[10]; |
---|
| 1852 | readData(SAMPLER,cRowR,sampler); |
---|
| 1853 | //Double fqrefval = getRefValLSR( cRow, idx_GBT, sampler, mbrec.restFreq ) ; |
---|
| 1854 | sprintf( cMsg, "Row %ld (%s): reference frequency %lf", cRow, sampler, cRefVal[idx_GBT] ) ; |
---|
| 1855 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
| 1856 | |
---|
| 1857 | if ( idx_GBT == (int)cRefValKey.size() ) { |
---|
| 1858 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Failed to get reference frequency value" ) ; |
---|
| 1859 | mbrec.fqRefVal[0] = 0.0 ; |
---|
| 1860 | } |
---|
| 1861 | else { |
---|
| 1862 | mbrec.fqRefVal[0] = (double)cRefVal[idx_GBT] ; |
---|
| 1863 | } |
---|
| 1864 | } |
---|
| 1865 | |
---|
| 1866 | if (cALFA_BD) { |
---|
| 1867 | unsigned char invert; |
---|
| 1868 | int anynul, colnum; |
---|
| 1869 | findCol("UPPERSB", &colnum); |
---|
| 1870 | fits_read_col(cSDptr, TBYTE, colnum, cRow, 1, 1, 0, &invert, &anynul, |
---|
| 1871 | &cStatus); |
---|
| 1872 | |
---|
| 1873 | if (invert) { |
---|
| 1874 | mbrec.fqDelt[0] = -mbrec.fqDelt[0]; |
---|
| 1875 | } |
---|
| 1876 | } |
---|
| 1877 | |
---|
| 1878 | if (cStatus) { |
---|
| 1879 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1880 | return 1; |
---|
| 1881 | } |
---|
| 1882 | |
---|
| 1883 | // Adjust for channel selection. |
---|
| 1884 | if (mbrec.fqRefPix[0] != refChan) { |
---|
| 1885 | mbrec.fqRefVal[0] += (refChan - mbrec.fqRefPix[0]) * mbrec.fqDelt[0]; |
---|
| 1886 | mbrec.fqRefPix[0] = refChan; |
---|
| 1887 | } |
---|
| 1888 | |
---|
| 1889 | if (endChan < startChan) { |
---|
| 1890 | mbrec.fqDelt[0] = -mbrec.fqDelt[0]; |
---|
| 1891 | } |
---|
| 1892 | |
---|
| 1893 | // The data may only have a scalar Tsys value. |
---|
| 1894 | mbrec.tsys[0][0] = 0.0f; |
---|
| 1895 | mbrec.tsys[0][1] = 0.0f; |
---|
| 1896 | if (cData[TSYS].nelem >= nPol) { |
---|
| 1897 | readData(TSYS, cRowR, mbrec.tsys[0]); |
---|
| 1898 | } |
---|
| 1899 | |
---|
| 1900 | for (int j = 0; j < 2; j++) { |
---|
| 1901 | mbrec.calfctr[0][j] = 0.0f; |
---|
| 1902 | } |
---|
| 1903 | if (cData[CALFCTR].colnum > 0) { |
---|
| 1904 | readData(CALFCTR, cRowR, mbrec.calfctr); |
---|
| 1905 | } |
---|
| 1906 | |
---|
| 1907 | if (cHaveBase) { |
---|
| 1908 | mbrec.haveBase = 1; |
---|
| 1909 | readData(BASELIN, cRowR, mbrec.baseLin); |
---|
| 1910 | readData(BASESUB, cRowR, mbrec.baseSub); |
---|
| 1911 | } else { |
---|
| 1912 | mbrec.haveBase = 0; |
---|
| 1913 | } |
---|
| 1914 | |
---|
| 1915 | if (cStatus) { |
---|
| 1916 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1917 | return 1; |
---|
| 1918 | } |
---|
| 1919 | |
---|
| 1920 | // Read data, sectioning and transposing it in the process. |
---|
| 1921 | long *blc = new long[cNAxes+1]; |
---|
| 1922 | long *trc = new long[cNAxes+1]; |
---|
| 1923 | long *inc = new long[cNAxes+1]; |
---|
| 1924 | for (int iaxis = 0; iaxis <= cNAxes; iaxis++) { |
---|
| 1925 | blc[iaxis] = 1; |
---|
| 1926 | trc[iaxis] = 1; |
---|
| 1927 | inc[iaxis] = 1; |
---|
| 1928 | } |
---|
| 1929 | |
---|
| 1930 | blc[cFreqAxis] = std::min(startChan, endChan); |
---|
| 1931 | trc[cFreqAxis] = std::max(startChan, endChan); |
---|
| 1932 | if (cTimeAxis >= 0) { |
---|
| 1933 | blc[cTimeAxis] = cTimeIdx; |
---|
| 1934 | trc[cTimeAxis] = cTimeIdx; |
---|
| 1935 | } |
---|
| 1936 | blc[cNAxes] = cRowR; |
---|
| 1937 | trc[cNAxes] = cRowR; |
---|
| 1938 | |
---|
| 1939 | mbrec.haveSpectra = cGetSpectra; |
---|
| 1940 | if (cGetSpectra) { |
---|
| 1941 | int anynul; |
---|
| 1942 | |
---|
| 1943 | for (int iPol = 0; iPol < nPol; iPol++) { |
---|
| 1944 | blc[cStokesAxis] = iPol+1; |
---|
| 1945 | trc[cStokesAxis] = iPol+1; |
---|
| 1946 | |
---|
| 1947 | if (cALFA && cALFA_CIMA < 2) { |
---|
| 1948 | // ALFA data: polarizations are stored in successive rows. |
---|
| 1949 | blc[cStokesAxis] = 1; |
---|
| 1950 | trc[cStokesAxis] = 1; |
---|
| 1951 | |
---|
| 1952 | if (iPol) { |
---|
| 1953 | if (++cRow > cNRow) { |
---|
| 1954 | return -1; |
---|
| 1955 | } |
---|
| 1956 | |
---|
| 1957 | blc[cNAxes] = cRowR; |
---|
| 1958 | trc[cNAxes] = cRowR; |
---|
| 1959 | } |
---|
| 1960 | |
---|
| 1961 | } else if (cData[DATA].nelem < 0) { |
---|
| 1962 | // Variable dimension array; get axis lengths. |
---|
| 1963 | int naxes = 5, status; |
---|
| 1964 | |
---|
| 1965 | if ((status = readDim(DATA, cRowR, &naxes, cNAxis))) { |
---|
| 1966 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1967 | |
---|
| 1968 | } else if ((status = (naxes != cNAxes))) { |
---|
| 1969 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "DATA array dimensions changed."); |
---|
| 1970 | } |
---|
| 1971 | |
---|
| 1972 | if (status) { |
---|
| 1973 | delete [] blc; |
---|
| 1974 | delete [] trc; |
---|
| 1975 | delete [] inc; |
---|
| 1976 | return 1; |
---|
| 1977 | } |
---|
| 1978 | } |
---|
| 1979 | |
---|
| 1980 | if (fits_read_subset_flt(cSDptr, cData[DATA].colnum, cNAxes, cNAxis, |
---|
| 1981 | blc, trc, inc, 0, mbrec.spectra[0] + iPol*nChan, &anynul, |
---|
| 1982 | &cStatus)) { |
---|
| 1983 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 1984 | delete [] blc; |
---|
| 1985 | delete [] trc; |
---|
| 1986 | delete [] inc; |
---|
| 1987 | return 1; |
---|
| 1988 | } |
---|
| 1989 | |
---|
| 1990 | if (endChan < startChan) { |
---|
| 1991 | // Reverse the spectrum. |
---|
| 1992 | float *iptr = mbrec.spectra[0] + iPol*nChan; |
---|
| 1993 | float *jptr = iptr + nChan - 1; |
---|
| 1994 | float *mid = iptr + nChan/2; |
---|
| 1995 | while (iptr < mid) { |
---|
| 1996 | float tmp = *iptr; |
---|
| 1997 | *(iptr++) = *jptr; |
---|
| 1998 | *(jptr--) = tmp; |
---|
| 1999 | } |
---|
| 2000 | } |
---|
| 2001 | |
---|
| 2002 | if (cALFA) { |
---|
| 2003 | // ALFA data, rescale the spectrum. |
---|
| 2004 | float el, zd; |
---|
| 2005 | readData(ELEVATIO, cRowR, &el); |
---|
| 2006 | zd = 90.0f - el; |
---|
| 2007 | |
---|
| 2008 | float factor = sALFAcal[iBeam][iPol] / alfaGain(zd); |
---|
| 2009 | |
---|
| 2010 | if (cALFA_CIMA > 1) { |
---|
| 2011 | // Rescale according to the number of unblanked accumulations. |
---|
| 2012 | int colnum, naccum; |
---|
| 2013 | findCol("STAT", &colnum); |
---|
| 2014 | fits_read_col(cSDptr, TINT, colnum, cRowR, 10*(cTimeIdx-1)+2, 1, 0, |
---|
| 2015 | &naccum, &anynul, &cStatus); |
---|
| 2016 | factor *= cALFAacc / naccum; |
---|
| 2017 | } |
---|
| 2018 | |
---|
| 2019 | float *chan = mbrec.spectra[0] + iPol*nChan; |
---|
| 2020 | float *chanN = chan + nChan; |
---|
| 2021 | while (chan < chanN) { |
---|
| 2022 | // Approximate conversion to Jy. |
---|
| 2023 | *(chan++) *= factor; |
---|
| 2024 | } |
---|
| 2025 | } |
---|
| 2026 | |
---|
| 2027 | if (mbrec.tsys[0][iPol] == 0.0) { |
---|
| 2028 | // Compute Tsys as the average across the spectrum. |
---|
| 2029 | float *chan = mbrec.spectra[0] + iPol*nChan; |
---|
| 2030 | float *chanN = chan + nChan; |
---|
| 2031 | float *tsys = mbrec.tsys[0] + iPol; |
---|
| 2032 | while (chan < chanN) { |
---|
| 2033 | *tsys += *(chan++); |
---|
| 2034 | } |
---|
| 2035 | |
---|
| 2036 | *tsys /= nChan; |
---|
| 2037 | } |
---|
| 2038 | |
---|
| 2039 | // Read data flags. |
---|
| 2040 | if (cData[FLAGGED].colnum > 0) { |
---|
| 2041 | if (fits_read_subset_byt(cSDptr, cData[FLAGGED].colnum, cNAxes, |
---|
| 2042 | cNAxis, blc, trc, inc, 0, mbrec.flagged[0] + iPol*nChan, &anynul, |
---|
| 2043 | &cStatus)) { |
---|
| 2044 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 2045 | delete [] blc; |
---|
| 2046 | delete [] trc; |
---|
| 2047 | delete [] inc; |
---|
| 2048 | return 1; |
---|
| 2049 | } |
---|
| 2050 | |
---|
| 2051 | if (endChan < startChan) { |
---|
| 2052 | // Reverse the flag vector. |
---|
| 2053 | unsigned char *iptr = mbrec.flagged[0] + iPol*nChan; |
---|
| 2054 | unsigned char *jptr = iptr + nChan - 1; |
---|
| 2055 | for (int ichan = 0; ichan < nChan/2; ichan++) { |
---|
| 2056 | unsigned char tmp = *iptr; |
---|
| 2057 | *(iptr++) = *jptr; |
---|
| 2058 | *(jptr--) = tmp; |
---|
| 2059 | } |
---|
| 2060 | } |
---|
| 2061 | |
---|
| 2062 | } else { |
---|
| 2063 | // All channels are unflagged by default. |
---|
| 2064 | unsigned char *iptr = mbrec.flagged[0] + iPol*nChan; |
---|
| 2065 | for (int ichan = 0; ichan < nChan; ichan++) { |
---|
| 2066 | *(iptr++) = 0; |
---|
| 2067 | } |
---|
| 2068 | } |
---|
| 2069 | } |
---|
| 2070 | } |
---|
| 2071 | |
---|
| 2072 | |
---|
| 2073 | // Read cross-polarization data. |
---|
| 2074 | if (cGetXPol) { |
---|
| 2075 | int anynul; |
---|
| 2076 | for (int j = 0; j < 2; j++) { |
---|
| 2077 | mbrec.xcalfctr[0][j] = 0.0f; |
---|
| 2078 | } |
---|
| 2079 | if (cData[XCALFCTR].colnum > 0) { |
---|
| 2080 | readData(XCALFCTR, cRowR, mbrec.xcalfctr); |
---|
| 2081 | } |
---|
| 2082 | |
---|
| 2083 | blc[0] = 1; |
---|
| 2084 | trc[0] = 2; |
---|
| 2085 | blc[1] = std::min(startChan, endChan); |
---|
| 2086 | trc[1] = std::max(startChan, endChan); |
---|
| 2087 | blc[2] = cRowR; |
---|
| 2088 | trc[2] = cRowR; |
---|
| 2089 | |
---|
| 2090 | int nAxis = 2; |
---|
| 2091 | long nAxes[] = {2, nChan}; |
---|
| 2092 | |
---|
| 2093 | if (fits_read_subset_flt(cSDptr, cData[XPOLDATA].colnum, nAxis, nAxes, |
---|
| 2094 | blc, trc, inc, 0, mbrec.xpol[0], &anynul, &cStatus)) { |
---|
| 2095 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 2096 | delete [] blc; |
---|
| 2097 | delete [] trc; |
---|
| 2098 | delete [] inc; |
---|
| 2099 | return 1; |
---|
| 2100 | } |
---|
| 2101 | |
---|
| 2102 | if (endChan < startChan) { |
---|
| 2103 | // Invert the cross-polarization spectrum. |
---|
| 2104 | float *iptr = mbrec.xpol[0]; |
---|
| 2105 | float *jptr = iptr + nChan - 2; |
---|
| 2106 | for (int ichan = 0; ichan < nChan/2; ichan++) { |
---|
| 2107 | float tmp = *iptr; |
---|
| 2108 | *iptr = *jptr; |
---|
| 2109 | *jptr = tmp; |
---|
| 2110 | |
---|
| 2111 | tmp = *(iptr+1); |
---|
| 2112 | *(iptr+1) = *(jptr+1); |
---|
| 2113 | *(jptr+1) = tmp; |
---|
| 2114 | |
---|
| 2115 | iptr += 2; |
---|
| 2116 | jptr -= 2; |
---|
| 2117 | } |
---|
| 2118 | } |
---|
| 2119 | } |
---|
| 2120 | |
---|
| 2121 | delete [] blc; |
---|
| 2122 | delete [] trc; |
---|
| 2123 | delete [] inc; |
---|
| 2124 | |
---|
| 2125 | if (cStatus) { |
---|
| 2126 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 2127 | return 1; |
---|
| 2128 | } |
---|
| 2129 | |
---|
| 2130 | mbrec.extraSysCal = cExtraSysCal; |
---|
| 2131 | readData(REFBEAM, cRowR, &mbrec.refBeam); |
---|
| 2132 | readData(TCAL, cRowR, &mbrec.tcal[0]); |
---|
| 2133 | readData(TCALTIME, cRowR, mbrec.tcalTime); |
---|
| 2134 | |
---|
| 2135 | readData(AZIMUTH, cRowR, &mbrec.azimuth); |
---|
| 2136 | readData(ELEVATIO, cRowR, &mbrec.elevation); |
---|
| 2137 | readData(PARANGLE, cRowR, &mbrec.parAngle); |
---|
| 2138 | |
---|
| 2139 | readData(FOCUSAXI, cRowR, &mbrec.focusAxi); |
---|
| 2140 | readData(FOCUSTAN, cRowR, &mbrec.focusTan); |
---|
| 2141 | readData(FOCUSROT, cRowR, &mbrec.focusRot); |
---|
| 2142 | |
---|
| 2143 | readData(TAMBIENT, cRowR, &mbrec.temp); |
---|
| 2144 | readData(PRESSURE, cRowR, &mbrec.pressure); |
---|
| 2145 | readData(HUMIDITY, cRowR, &mbrec.humidity); |
---|
| 2146 | readData(WINDSPEE, cRowR, &mbrec.windSpeed); |
---|
| 2147 | readData(WINDDIRE, cRowR, &mbrec.windAz); |
---|
| 2148 | |
---|
| 2149 | if (cALFA_BD) { |
---|
| 2150 | // ALFA BDFITS stores zenith angle rather than elevation. |
---|
| 2151 | mbrec.elevation = 90.0 - mbrec.elevation; |
---|
| 2152 | } |
---|
| 2153 | |
---|
| 2154 | mbrec.azimuth *= D2R; |
---|
| 2155 | mbrec.elevation *= D2R; |
---|
| 2156 | mbrec.parAngle *= D2R; |
---|
| 2157 | mbrec.focusRot *= D2R; |
---|
| 2158 | mbrec.windAz *= D2R; |
---|
| 2159 | |
---|
| 2160 | // For GBT data, source velocity can be evaluated |
---|
| 2161 | if ( cData[RVSYS].colnum > 0 && cData[VFRAME].colnum > 0 ) { |
---|
| 2162 | double vframe; |
---|
| 2163 | readData(VFRAME, cRowR, &vframe); |
---|
| 2164 | double rvsys; |
---|
| 2165 | readData(RVSYS, cRowR, &rvsys); |
---|
| 2166 | //mbrec.srcVelocity = rvsys - vframe ; |
---|
| 2167 | mbrec.srcVelocity = rvsys ; |
---|
| 2168 | } |
---|
| 2169 | |
---|
| 2170 | if (cStatus) { |
---|
| 2171 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 2172 | return 1; |
---|
| 2173 | } |
---|
| 2174 | |
---|
| 2175 | return 0; |
---|
| 2176 | } |
---|
| 2177 | |
---|
| 2178 | //-------------------------------------------------------- GBTFITSreader::close |
---|
| 2179 | |
---|
| 2180 | // Close the SDFITS file. |
---|
| 2181 | |
---|
| 2182 | void GBTFITSreader::close() |
---|
| 2183 | { |
---|
| 2184 | if (cSDptr) { |
---|
| 2185 | int status = 0; |
---|
| 2186 | fits_close_file(cSDptr, &status); |
---|
| 2187 | cSDptr = 0x0; |
---|
| 2188 | |
---|
| 2189 | if (cBeams) delete [] cBeams; |
---|
| 2190 | if (cIFs) delete [] cIFs; |
---|
| 2191 | if (cStartChan) delete [] cStartChan; |
---|
| 2192 | if (cEndChan) delete [] cEndChan; |
---|
| 2193 | if (cRefChan) delete [] cRefChan; |
---|
| 2194 | if (cNRowT) delete [] cNRowT; |
---|
| 2195 | if (cNRowCum) delete [] cNRowCum; |
---|
| 2196 | if (hduId) delete [] hduId; |
---|
| 2197 | } |
---|
| 2198 | } |
---|
| 2199 | |
---|
| 2200 | //------------------------------------------------------- GBTFITSreader::log |
---|
| 2201 | |
---|
| 2202 | // Log a message. If the current CFITSIO status value is non-zero, also log |
---|
| 2203 | // the corresponding error message and the CFITSIO message stack. |
---|
| 2204 | |
---|
| 2205 | void GBTFITSreader::log(LogOrigin origin, LogIO::Command cmd, const char *msg) |
---|
| 2206 | { |
---|
| 2207 | LogIO os( origin ) ; |
---|
| 2208 | |
---|
| 2209 | os << cmd ; |
---|
| 2210 | |
---|
| 2211 | os << msg << endl ; |
---|
| 2212 | |
---|
| 2213 | if (cStatus > 0) { |
---|
| 2214 | fits_get_errstatus(cStatus, cMsg); |
---|
| 2215 | os << cMsg << endl ; |
---|
| 2216 | |
---|
| 2217 | while (fits_read_errmsg(cMsg)) { |
---|
| 2218 | os << cMsg << endl ; |
---|
| 2219 | } |
---|
| 2220 | } |
---|
| 2221 | os << LogIO::POST ; |
---|
| 2222 | } |
---|
| 2223 | |
---|
| 2224 | //----------------------------------------------------- GBTFITSreader::findData |
---|
| 2225 | |
---|
| 2226 | // Locate a data item in the SDFITS file. |
---|
| 2227 | |
---|
| 2228 | void GBTFITSreader::findData( |
---|
| 2229 | int iData, |
---|
| 2230 | char *name, |
---|
| 2231 | int type) |
---|
| 2232 | { |
---|
| 2233 | cData[iData].name = name; |
---|
| 2234 | cData[iData].type = type; |
---|
| 2235 | |
---|
| 2236 | int colnum; |
---|
| 2237 | findCol(name, &colnum); |
---|
| 2238 | cData[iData].colnum = colnum; |
---|
| 2239 | |
---|
| 2240 | // Determine the number of data elements. |
---|
| 2241 | if (colnum > 0) { |
---|
| 2242 | int coltype; |
---|
| 2243 | long nelem, width; |
---|
| 2244 | fits_get_coltype(cSDptr, colnum, &coltype, &nelem, &width, &cStatus); |
---|
| 2245 | fits_get_bcolparms(cSDptr, colnum, 0x0, cData[iData].units, 0x0, 0x0, 0x0, |
---|
| 2246 | 0x0, 0x0, 0x0, &cStatus); |
---|
| 2247 | |
---|
| 2248 | // Look for a TDIMnnn keyword or column. |
---|
| 2249 | char tdim[8]; |
---|
| 2250 | sprintf(tdim, "TDIM%d", colnum); |
---|
| 2251 | findCol(tdim, &cData[iData].tdimcol); |
---|
| 2252 | |
---|
| 2253 | if (coltype < 0) { |
---|
| 2254 | // CFITSIO returns coltype < 0 for variable length arrays. |
---|
| 2255 | cData[iData].coltype = -coltype; |
---|
| 2256 | cData[iData].nelem = -nelem; |
---|
| 2257 | |
---|
| 2258 | } else { |
---|
| 2259 | cData[iData].coltype = coltype; |
---|
| 2260 | |
---|
| 2261 | // Is there a TDIMnnn column? |
---|
| 2262 | if (cData[iData].tdimcol > 0) { |
---|
| 2263 | // Yes, dimensions of the fixed-length array could still vary. |
---|
| 2264 | cData[iData].nelem = -nelem; |
---|
| 2265 | } else { |
---|
| 2266 | cData[iData].nelem = nelem; |
---|
| 2267 | } |
---|
| 2268 | } |
---|
| 2269 | |
---|
| 2270 | } else if (colnum == 0) { |
---|
| 2271 | // Keyword. |
---|
| 2272 | cData[iData].coltype = 0; |
---|
| 2273 | cData[iData].nelem = 1; |
---|
| 2274 | cData[iData].tdimcol = -1; |
---|
| 2275 | } |
---|
| 2276 | } |
---|
| 2277 | |
---|
| 2278 | //------------------------------------------------------ GBTFITSreader::findCol |
---|
| 2279 | |
---|
| 2280 | // Locate a parameter in the SDFITS file. |
---|
| 2281 | |
---|
| 2282 | void GBTFITSreader::findCol( |
---|
| 2283 | char *name, |
---|
| 2284 | int *colnum) |
---|
| 2285 | { |
---|
| 2286 | *colnum = 0; |
---|
| 2287 | int status = 0; |
---|
| 2288 | fits_get_colnum(cSDptr, CASESEN, name, colnum, &status); |
---|
| 2289 | |
---|
| 2290 | if (status) { |
---|
| 2291 | // Not a real column - maybe it's virtual. |
---|
| 2292 | char card[81]; |
---|
| 2293 | |
---|
| 2294 | status = 0; |
---|
| 2295 | fits_read_card(cSDptr, name, card, &status); |
---|
| 2296 | if (status) { |
---|
| 2297 | // Not virtual either. |
---|
| 2298 | *colnum = -1; |
---|
| 2299 | } |
---|
| 2300 | |
---|
| 2301 | // Clear error messages. |
---|
| 2302 | fits_clear_errmsg(); |
---|
| 2303 | } |
---|
| 2304 | } |
---|
| 2305 | |
---|
| 2306 | //------------------------------------------------------ GBTFITSreader::readDim |
---|
| 2307 | |
---|
| 2308 | // Determine the dimensions of an array in the SDFITS file. |
---|
| 2309 | |
---|
| 2310 | int GBTFITSreader::readDim( |
---|
| 2311 | int iData, |
---|
| 2312 | long iRow, |
---|
| 2313 | int *naxes, |
---|
| 2314 | long naxis[]) |
---|
| 2315 | { |
---|
| 2316 | int colnum = cData[iData].colnum; |
---|
| 2317 | if (colnum <= 0) { |
---|
| 2318 | return 1; |
---|
| 2319 | } |
---|
| 2320 | |
---|
| 2321 | int maxdim = *naxes; |
---|
| 2322 | if (cData[iData].tdimcol < 0) { |
---|
| 2323 | // No TDIMnnn column for this array. |
---|
| 2324 | if (cData[iData].nelem < 0) { |
---|
| 2325 | // Variable length array; read the array descriptor. |
---|
| 2326 | *naxes = 1; |
---|
| 2327 | long dummy; |
---|
| 2328 | if (fits_read_descript(cSDptr, colnum, iRow, naxis, &dummy, &cStatus)) { |
---|
| 2329 | return 1; |
---|
| 2330 | } |
---|
| 2331 | |
---|
| 2332 | } else { |
---|
| 2333 | // Read the repeat count from TFORMnnn. |
---|
| 2334 | if (fits_read_tdim(cSDptr, colnum, maxdim, naxes, naxis, &cStatus)) { |
---|
| 2335 | return 1; |
---|
| 2336 | } |
---|
| 2337 | } |
---|
| 2338 | |
---|
| 2339 | } else { |
---|
| 2340 | // Read the TDIMnnn value from the header or table. |
---|
| 2341 | char tdim[8], tdimval[64]; |
---|
| 2342 | sprintf(tdim, "TDIM%d", colnum); |
---|
| 2343 | readData(tdim, TSTRING, iRow, tdimval); |
---|
| 2344 | |
---|
| 2345 | // fits_decode_tdim() checks that the TDIMnnn value is within the length |
---|
| 2346 | // of the array in the specified column number but unfortunately doesn't |
---|
| 2347 | // recognize variable-length arrays. Hence we must decode it here. |
---|
| 2348 | char *tp = tdimval; |
---|
| 2349 | if (*tp != '(') return 1; |
---|
| 2350 | |
---|
| 2351 | tp++; |
---|
| 2352 | *naxes = 0; |
---|
| 2353 | for (size_t j = 1; j < strlen(tdimval); j++) { |
---|
| 2354 | if (tdimval[j] == ',' || tdimval[j] == ')') { |
---|
| 2355 | sscanf(tp, "%ld", naxis + (*naxes)++); |
---|
| 2356 | if (tdimval[j] == ')') break; |
---|
| 2357 | tp = tdimval + j + 1; |
---|
| 2358 | } |
---|
| 2359 | } |
---|
| 2360 | } |
---|
| 2361 | |
---|
| 2362 | return 0; |
---|
| 2363 | } |
---|
| 2364 | |
---|
| 2365 | //----------------------------------------------------- GBTFITSreader::readParm |
---|
| 2366 | |
---|
| 2367 | // Read a parameter value from the SDFITS file. |
---|
| 2368 | |
---|
| 2369 | int GBTFITSreader::readParm( |
---|
| 2370 | char *name, |
---|
| 2371 | int type, |
---|
| 2372 | void *value) |
---|
| 2373 | { |
---|
| 2374 | return readData(name, type, 1, value); |
---|
| 2375 | } |
---|
| 2376 | |
---|
| 2377 | //----------------------------------------------------- GBTFITSreader::readData |
---|
| 2378 | |
---|
| 2379 | // Read a data value from the SDFITS file. |
---|
| 2380 | |
---|
| 2381 | int GBTFITSreader::readData( |
---|
| 2382 | char *name, |
---|
| 2383 | int type, |
---|
| 2384 | long iRow, |
---|
| 2385 | void *value) |
---|
| 2386 | { |
---|
| 2387 | int colnum; |
---|
| 2388 | findCol(name, &colnum); |
---|
| 2389 | |
---|
| 2390 | if (colnum > 0 && iRow > 0) { |
---|
| 2391 | // Read the first value from the specified row of the table. |
---|
| 2392 | int coltype; |
---|
| 2393 | long nelem, width; |
---|
| 2394 | fits_get_coltype(cSDptr, colnum, &coltype, &nelem, &width, &cStatus); |
---|
| 2395 | |
---|
| 2396 | int anynul; |
---|
| 2397 | if (type == TSTRING) { |
---|
| 2398 | if (nelem) { |
---|
| 2399 | fits_read_col(cSDptr, type, colnum, iRow, 1, 1, 0, &value, &anynul, |
---|
| 2400 | &cStatus); |
---|
| 2401 | } else { |
---|
| 2402 | strcpy((char *)value, ""); |
---|
| 2403 | } |
---|
| 2404 | |
---|
| 2405 | } else { |
---|
| 2406 | if (nelem) { |
---|
| 2407 | fits_read_col(cSDptr, type, colnum, iRow, 1, 1, 0, value, &anynul, |
---|
| 2408 | &cStatus); |
---|
| 2409 | } else { |
---|
| 2410 | if (type == TSHORT) { |
---|
| 2411 | *((short *)value) = 0; |
---|
| 2412 | } else if (type == TINT) { |
---|
| 2413 | *((int *)value) = 0; |
---|
| 2414 | } else if (type == TFLOAT) { |
---|
| 2415 | *((float *)value) = 0.0f; |
---|
| 2416 | } else if (type == TDOUBLE) { |
---|
| 2417 | *((double *)value) = 0.0; |
---|
| 2418 | } |
---|
| 2419 | } |
---|
| 2420 | } |
---|
| 2421 | |
---|
| 2422 | } else if (colnum == 0) { |
---|
| 2423 | // Read keyword value. |
---|
| 2424 | fits_read_key(cSDptr, type, name, value, 0, &cStatus); |
---|
| 2425 | |
---|
| 2426 | } else { |
---|
| 2427 | // Not present. |
---|
| 2428 | if (type == TSTRING) { |
---|
| 2429 | strcpy((char *)value, ""); |
---|
| 2430 | } else if (type == TSHORT) { |
---|
| 2431 | *((short *)value) = 0; |
---|
| 2432 | } else if (type == TINT) { |
---|
| 2433 | *((int *)value) = 0; |
---|
| 2434 | } else if (type == TFLOAT) { |
---|
| 2435 | *((float *)value) = 0.0f; |
---|
| 2436 | } else if (type == TDOUBLE) { |
---|
| 2437 | *((double *)value) = 0.0; |
---|
| 2438 | } |
---|
| 2439 | } |
---|
| 2440 | |
---|
| 2441 | return colnum < 0; |
---|
| 2442 | } |
---|
| 2443 | |
---|
| 2444 | //----------------------------------------------------- GBTFITSreader::readData |
---|
| 2445 | |
---|
| 2446 | // Read data from the SDFITS file. |
---|
| 2447 | |
---|
| 2448 | int GBTFITSreader::readData( |
---|
| 2449 | int iData, |
---|
| 2450 | long iRow, |
---|
| 2451 | void *value) |
---|
| 2452 | { |
---|
| 2453 | int type = cData[iData].type; |
---|
| 2454 | int colnum = cData[iData].colnum; |
---|
| 2455 | |
---|
| 2456 | if (colnum > 0 && iRow > 0) { |
---|
| 2457 | // Read the required number of values from the specified row of the table. |
---|
| 2458 | long nelem = cData[iData].nelem; |
---|
| 2459 | int anynul; |
---|
| 2460 | if (type == TSTRING) { |
---|
| 2461 | if (nelem) { |
---|
| 2462 | fits_read_col(cSDptr, type, colnum, iRow, 1, 1, 0, &value, &anynul, |
---|
| 2463 | &cStatus); |
---|
| 2464 | } else { |
---|
| 2465 | strcpy((char *)value, ""); |
---|
| 2466 | } |
---|
| 2467 | |
---|
| 2468 | } else { |
---|
| 2469 | if (nelem) { |
---|
| 2470 | fits_read_col(cSDptr, type, colnum, iRow, 1, abs(nelem), 0, value, |
---|
| 2471 | &anynul, &cStatus); |
---|
| 2472 | } else { |
---|
| 2473 | if (type == TSHORT) { |
---|
| 2474 | *((short *)value) = 0; |
---|
| 2475 | } else if (type == TINT) { |
---|
| 2476 | *((int *)value) = 0; |
---|
| 2477 | } else if (type == TFLOAT) { |
---|
| 2478 | *((float *)value) = 0.0f; |
---|
| 2479 | } else if (type == TDOUBLE) { |
---|
| 2480 | *((double *)value) = 0.0; |
---|
| 2481 | } |
---|
| 2482 | } |
---|
| 2483 | } |
---|
| 2484 | |
---|
| 2485 | } else if (colnum == 0) { |
---|
| 2486 | // Read keyword value. |
---|
| 2487 | char *name = cData[iData].name; |
---|
| 2488 | fits_read_key(cSDptr, type, name, value, 0, &cStatus); |
---|
| 2489 | |
---|
| 2490 | } else { |
---|
| 2491 | // Not present. |
---|
| 2492 | if (type == TSTRING) { |
---|
| 2493 | strcpy((char *)value, ""); |
---|
| 2494 | } else if (type == TSHORT) { |
---|
| 2495 | *((short *)value) = 0; |
---|
| 2496 | } else if (type == TINT) { |
---|
| 2497 | *((int *)value) = 0; |
---|
| 2498 | } else if (type == TFLOAT) { |
---|
| 2499 | *((float *)value) = 0.0f; |
---|
| 2500 | } else if (type == TDOUBLE) { |
---|
| 2501 | *((double *)value) = 0.0; |
---|
| 2502 | } |
---|
| 2503 | } |
---|
| 2504 | |
---|
| 2505 | return colnum < 0; |
---|
| 2506 | } |
---|
| 2507 | |
---|
| 2508 | //------------------------------------------------------ GBTFITSreader::readCol |
---|
| 2509 | |
---|
| 2510 | // Read a scalar column from the SDFITS file. |
---|
| 2511 | |
---|
| 2512 | int GBTFITSreader::readCol( |
---|
| 2513 | int iData, |
---|
| 2514 | void *value) |
---|
| 2515 | { |
---|
| 2516 | int type = cData[iData].type; |
---|
| 2517 | |
---|
| 2518 | if (cData[iData].colnum > 0) { |
---|
| 2519 | // Table column. |
---|
| 2520 | int anynul; |
---|
| 2521 | int offset = 0 ; |
---|
| 2522 | for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
---|
| 2523 | fits_movabs_hdu(cSDptr, hduId[ihdu], NULL, &cStatus) ; |
---|
| 2524 | if ( type == TSHORT ) { |
---|
| 2525 | fits_read_col(cSDptr, type, cData[iData].colnum, 1, 1, cNRowT[ihdu], 0, |
---|
| 2526 | &((short *)value)[offset], &anynul, &cStatus); |
---|
| 2527 | } |
---|
| 2528 | else if ( type == TINT ) { |
---|
| 2529 | fits_read_col(cSDptr, type, cData[iData].colnum, 1, 1, cNRowT[ihdu], 0, |
---|
| 2530 | &((int *)value)[offset], &anynul, &cStatus); |
---|
| 2531 | } |
---|
| 2532 | else if ( type == TFLOAT ) { |
---|
| 2533 | fits_read_col(cSDptr, type, cData[iData].colnum, 1, 1, cNRowT[ihdu], 0, |
---|
| 2534 | &((float *)value)[offset], &anynul, &cStatus); |
---|
| 2535 | } |
---|
| 2536 | else if ( type == TDOUBLE ) { |
---|
| 2537 | fits_read_col(cSDptr, type, cData[iData].colnum, 1, 1, cNRowT[ihdu], 0, |
---|
| 2538 | &((double *)value)[offset], &anynul, &cStatus); |
---|
| 2539 | } |
---|
| 2540 | offset = cNRowCum[ihdu] ; |
---|
| 2541 | } |
---|
| 2542 | } else { |
---|
| 2543 | // Header keyword. |
---|
| 2544 | readData(iData, 0, value); |
---|
| 2545 | for (int irow = 1; irow < cNRow; irow++) { |
---|
| 2546 | if (type == TSHORT) { |
---|
| 2547 | ((short *)value)[irow] = *((short *)value); |
---|
| 2548 | } else if (type == TINT) { |
---|
| 2549 | ((int *)value)[irow] = *((int *)value); |
---|
| 2550 | } else if (type == TFLOAT) { |
---|
| 2551 | ((float *)value)[irow] = *((float *)value); |
---|
| 2552 | } else if (type == TDOUBLE) { |
---|
| 2553 | ((double *)value)[irow] = *((double *)value); |
---|
| 2554 | } |
---|
| 2555 | } |
---|
| 2556 | } |
---|
| 2557 | |
---|
| 2558 | return cData[iData].colnum < 0; |
---|
| 2559 | } |
---|
| 2560 | |
---|
| 2561 | //----------------------------------------------------- GBTFITSreader::readTime |
---|
| 2562 | |
---|
| 2563 | // Read the time from the SDFITS file. |
---|
| 2564 | |
---|
| 2565 | int GBTFITSreader::readTime( |
---|
| 2566 | long iRow, |
---|
| 2567 | int iPix, |
---|
| 2568 | char *datobs, |
---|
| 2569 | double &utc) |
---|
| 2570 | { |
---|
| 2571 | readData(DATE_OBS, iRow, datobs); |
---|
| 2572 | if (cData[TIME].colnum >= 0) { |
---|
| 2573 | readData(TIME, iRow, &utc); |
---|
| 2574 | } else if (cGBT) { |
---|
| 2575 | Int yy, mm ; |
---|
| 2576 | Double dd, hour, min, sec ; |
---|
| 2577 | sscanf( datobs, "%d-%d-%lfT%lf:%lf:%lf", &yy, &mm, &dd, &hour, &min, &sec ) ; |
---|
| 2578 | dd = dd + ( hour * 3600.0 + min * 60.0 + sec ) / 86400.0 ; |
---|
| 2579 | MVTime mvt( yy, mm, dd ) ; |
---|
| 2580 | dd = mvt.day() ; |
---|
| 2581 | utc = fmod( dd, 1.0 ) * 86400.0 ; |
---|
| 2582 | } else if (cNAxisTime > 1) { |
---|
| 2583 | double timeDelt, timeRefPix, timeRefVal; |
---|
| 2584 | readData(TimeRefVal, iRow, &timeRefVal); |
---|
| 2585 | readData(TimeDelt, iRow, &timeDelt); |
---|
| 2586 | readData(TimeRefPix, iRow, &timeRefPix); |
---|
| 2587 | utc = timeRefVal + (iPix - timeRefPix) * timeDelt; |
---|
| 2588 | } |
---|
| 2589 | |
---|
| 2590 | if (cALFA_BD) utc *= 3600.0; |
---|
| 2591 | |
---|
| 2592 | // Check DATE-OBS format. |
---|
| 2593 | if (datobs[2] == '/') { |
---|
| 2594 | // Translate an old-format DATE-OBS. |
---|
| 2595 | datobs[9] = datobs[1]; |
---|
| 2596 | datobs[8] = datobs[0]; |
---|
| 2597 | datobs[2] = datobs[6]; |
---|
| 2598 | datobs[5] = datobs[3]; |
---|
| 2599 | datobs[3] = datobs[7]; |
---|
| 2600 | datobs[6] = datobs[4]; |
---|
| 2601 | datobs[7] = '-'; |
---|
| 2602 | datobs[4] = '-'; |
---|
| 2603 | datobs[1] = '9'; |
---|
| 2604 | datobs[0] = '1'; |
---|
| 2605 | |
---|
| 2606 | } else if (datobs[10] == 'T' && cData[TIME].colnum < 0) { |
---|
| 2607 | // Dig UTC out of a new-format DATE-OBS. |
---|
| 2608 | int hh, mm; |
---|
| 2609 | float ss; |
---|
| 2610 | sscanf(datobs+11, "%d:%d:%f", &hh, &mm, &ss); |
---|
| 2611 | utc = (hh*60 + mm)*60 + ss; |
---|
| 2612 | } |
---|
| 2613 | |
---|
| 2614 | datobs[10] = '\0'; |
---|
| 2615 | |
---|
| 2616 | return 0; |
---|
| 2617 | } |
---|
| 2618 | |
---|
| 2619 | //------------------------------------------------------ GBTFITSreader::alfaCal |
---|
| 2620 | |
---|
| 2621 | // Process ALFA calibration data. |
---|
| 2622 | |
---|
| 2623 | int GBTFITSreader::alfaCal( |
---|
| 2624 | short iBeam, |
---|
| 2625 | short iIF, |
---|
| 2626 | short iPol) |
---|
| 2627 | { |
---|
| 2628 | const string methodName = "alfaCal()" ; |
---|
| 2629 | |
---|
| 2630 | int calOn; |
---|
| 2631 | char chars[32]; |
---|
| 2632 | if (cALFA_BD) { |
---|
| 2633 | readData("OBS_NAME", TSTRING, cRow, chars); |
---|
| 2634 | } else { |
---|
| 2635 | readData("SCANTYPE", TSTRING, cRow, chars); |
---|
| 2636 | } |
---|
| 2637 | |
---|
| 2638 | if (strcmp(chars, "ON") == 0) { |
---|
| 2639 | calOn = 1; |
---|
| 2640 | } else if (strcmp(chars, "OFF") == 0) { |
---|
| 2641 | calOn = 0; |
---|
| 2642 | } else { |
---|
| 2643 | return 1; |
---|
| 2644 | } |
---|
| 2645 | |
---|
| 2646 | // Read cal data. |
---|
| 2647 | long *blc = new long[cNAxes+1]; |
---|
| 2648 | long *trc = new long[cNAxes+1]; |
---|
| 2649 | long *inc = new long[cNAxes+1]; |
---|
| 2650 | for (int iaxis = 0; iaxis <= cNAxes; iaxis++) { |
---|
| 2651 | blc[iaxis] = 1; |
---|
| 2652 | trc[iaxis] = 1; |
---|
| 2653 | inc[iaxis] = 1; |
---|
| 2654 | } |
---|
| 2655 | |
---|
| 2656 | // User channel selection. |
---|
| 2657 | int startChan = cStartChan[iIF]; |
---|
| 2658 | int endChan = cEndChan[iIF]; |
---|
| 2659 | |
---|
| 2660 | blc[cFreqAxis] = std::min(startChan, endChan); |
---|
| 2661 | trc[cFreqAxis] = std::max(startChan, endChan); |
---|
| 2662 | if (cALFA_CIMA > 1) { |
---|
| 2663 | // CIMAFITS 2.x has a legitimate STOKES axis... |
---|
| 2664 | blc[cStokesAxis] = iPol+1; |
---|
| 2665 | trc[cStokesAxis] = iPol+1; |
---|
| 2666 | } else { |
---|
| 2667 | // ...older ALFA data does not. |
---|
| 2668 | blc[cStokesAxis] = 1; |
---|
| 2669 | trc[cStokesAxis] = 1; |
---|
| 2670 | } |
---|
| 2671 | if (cTimeAxis >= 0) { |
---|
| 2672 | blc[cTimeAxis] = cTimeIdx; |
---|
| 2673 | trc[cTimeAxis] = cTimeIdx; |
---|
| 2674 | } |
---|
| 2675 | blc[cNAxes] = cRow; |
---|
| 2676 | trc[cNAxes] = cRow; |
---|
| 2677 | |
---|
| 2678 | float spectrum[endChan]; |
---|
| 2679 | int anynul; |
---|
| 2680 | if (fits_read_subset_flt(cSDptr, cData[DATA].colnum, cNAxes, cNAxis, |
---|
| 2681 | blc, trc, inc, 0, spectrum, &anynul, &cStatus)) { |
---|
| 2682 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
| 2683 | delete [] blc; |
---|
| 2684 | delete [] trc; |
---|
| 2685 | delete [] inc; |
---|
| 2686 | return 1; |
---|
| 2687 | } |
---|
| 2688 | |
---|
| 2689 | // Factor to rescale according to the number of unblanked accumulations. |
---|
| 2690 | float factor = 1.0f; |
---|
| 2691 | if (cALFA_CIMA > 1) { |
---|
| 2692 | int colnum, naccum; |
---|
| 2693 | findCol("STAT", &colnum); |
---|
| 2694 | fits_read_col(cSDptr, TINT, colnum, cRow, 2, 1, 0, &naccum, &anynul, |
---|
| 2695 | &cStatus); |
---|
| 2696 | factor = cALFAacc / naccum; |
---|
| 2697 | } |
---|
| 2698 | |
---|
| 2699 | // Average the spectrum. |
---|
| 2700 | float mean = 1e9f; |
---|
| 2701 | for (int k = 0; k < 2; k++) { |
---|
| 2702 | float discrim = 2.0f * mean; |
---|
| 2703 | |
---|
| 2704 | int nChan = 0; |
---|
| 2705 | float sum = 0.0f; |
---|
| 2706 | |
---|
| 2707 | float *chanN = spectrum + abs(endChan - startChan) + 1; |
---|
| 2708 | for (float *chan = spectrum; chan < chanN; chan++) { |
---|
| 2709 | // Simple discriminant that eliminates strong radar interference. |
---|
| 2710 | if (*chan < discrim) { |
---|
| 2711 | nChan++; |
---|
| 2712 | sum += *chan * factor; |
---|
| 2713 | } |
---|
| 2714 | } |
---|
| 2715 | |
---|
| 2716 | mean = sum / nChan; |
---|
| 2717 | } |
---|
| 2718 | |
---|
| 2719 | if (calOn) { |
---|
| 2720 | sALFAcalOn[iBeam][iPol] *= sALFAcalNon[iBeam][iPol]; |
---|
| 2721 | sALFAcalOn[iBeam][iPol] += mean; |
---|
| 2722 | sALFAcalOn[iBeam][iPol] /= ++sALFAcalNon[iBeam][iPol]; |
---|
| 2723 | } else { |
---|
| 2724 | sALFAcalOff[iBeam][iPol] *= sALFAcalNoff[iBeam][iPol]; |
---|
| 2725 | sALFAcalOff[iBeam][iPol] += mean; |
---|
| 2726 | sALFAcalOff[iBeam][iPol] /= ++sALFAcalNoff[iBeam][iPol]; |
---|
| 2727 | } |
---|
| 2728 | |
---|
| 2729 | if (sALFAcalNon[iBeam][iPol] && sALFAcalNoff[iBeam][iPol]) { |
---|
| 2730 | // Tcal should come from the TCAL table, it varies weakly with beam, |
---|
| 2731 | // polarization, and frequency. However, TCAL is not written properly. |
---|
| 2732 | float Tcal = 12.0f; |
---|
| 2733 | sALFAcal[iBeam][iPol] = Tcal / (sALFAcalOn[iBeam][iPol] - |
---|
| 2734 | sALFAcalOff[iBeam][iPol]); |
---|
| 2735 | |
---|
| 2736 | // Scale from K to Jy; the gain also varies weakly with beam, |
---|
| 2737 | // polarization, frequency, and zenith angle. |
---|
| 2738 | float fluxCal = 10.0f; |
---|
| 2739 | sALFAcal[iBeam][iPol] /= fluxCal; |
---|
| 2740 | } |
---|
| 2741 | |
---|
| 2742 | return 0; |
---|
| 2743 | } |
---|
| 2744 | |
---|
| 2745 | //----------------------------------------------------- GBTFITSreader::alfaGain |
---|
| 2746 | |
---|
| 2747 | // ALFA gain factor. |
---|
| 2748 | |
---|
| 2749 | float GBTFITSreader::alfaGain( |
---|
| 2750 | float zd) |
---|
| 2751 | { |
---|
| 2752 | // Gain vs zenith distance table from Robert Minchin, 2008/12/08. |
---|
| 2753 | const int nZD = 37; |
---|
| 2754 | const float zdLim[] = {1.5f, 19.5f}; |
---|
| 2755 | const float zdInc = (nZD - 1) / (zdLim[1] - zdLim[0]); |
---|
| 2756 | float zdGain[] = { 1.00723708, |
---|
| 2757 | 1.16644573, 1.15003645, 1.07117307, 1.02532673, |
---|
| 2758 | 1.01788402, 1.01369524, 1.00000000, 0.989855111, |
---|
| 2759 | 0.990888834, 0.993996620, 0.989964068, 0.982213855, |
---|
| 2760 | 0.978662670, 0.979349494, 0.978478372, 0.974631131, |
---|
| 2761 | 0.972126007, 0.972835243, 0.972742677, 0.968671739, |
---|
| 2762 | 0.963891327, 0.963452935, 0.966831207, 0.969585896, |
---|
| 2763 | 0.970700860, 0.972644389, 0.973754644, 0.967344403, |
---|
| 2764 | 0.952168941, 0.937160134, 0.927843094, 0.914048433, |
---|
| 2765 | 0.886700928, 0.864701211, 0.869126320, 0.854309499}; |
---|
| 2766 | |
---|
| 2767 | float gain; |
---|
| 2768 | // Do table lookup by linear interpolation. |
---|
| 2769 | float lambda = zdInc * (zd - zdLim[0]); |
---|
| 2770 | int j = int(lambda); |
---|
| 2771 | if (j < 0) { |
---|
| 2772 | gain = zdGain[0]; |
---|
| 2773 | } else if (j >= nZD-1) { |
---|
| 2774 | gain = zdGain[nZD-1]; |
---|
| 2775 | } else { |
---|
| 2776 | gain = zdGain[j] + (lambda - j) * (zdGain[j+1] - zdGain[j]); |
---|
| 2777 | } |
---|
| 2778 | |
---|
| 2779 | return gain; |
---|
| 2780 | } |
---|
| 2781 | |
---|
| 2782 | //----------------------------------------------------- GBTFITSreader::cRowRelative |
---|
| 2783 | |
---|
| 2784 | // get relative row index in appropriate binary table |
---|
| 2785 | |
---|
| 2786 | long GBTFITSreader::cRowRelative( long iRow ) |
---|
| 2787 | { |
---|
| 2788 | // iRow is 1-relative |
---|
| 2789 | const string methodName = "cRowRelative" ; |
---|
| 2790 | if ( numHDU == 0 ) { |
---|
| 2791 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, |
---|
| 2792 | "You should call open() first" ) ; |
---|
| 2793 | return 0L ; |
---|
| 2794 | } |
---|
| 2795 | else if ( numHDU == 1 ) { |
---|
| 2796 | if ( iRow > cNRow ) |
---|
| 2797 | return 0L ; |
---|
| 2798 | else |
---|
| 2799 | return iRow ; |
---|
| 2800 | } |
---|
| 2801 | |
---|
| 2802 | long jRow = 0L ; |
---|
| 2803 | sprintf( cMsg, "iRow = %ld", iRow ); |
---|
| 2804 | log(LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg) ; |
---|
| 2805 | if ( iRow <= cNRowCum[0] ) { |
---|
| 2806 | jRow = iRow ; |
---|
| 2807 | sprintf( cMsg, "Moving %d(%d)", 0, hduId[0] ) ; |
---|
| 2808 | log(LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg) ; |
---|
| 2809 | if ( fits_movabs_hdu( cSDptr, hduId[0], NULL, &cStatus ) ) { |
---|
| 2810 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, |
---|
| 2811 | "Failed to move HDU" ) ; |
---|
| 2812 | return 0L ; |
---|
| 2813 | } |
---|
| 2814 | } |
---|
| 2815 | else { |
---|
| 2816 | for ( int ihdu = 1 ; ihdu < numHDU ; ihdu++ ) { |
---|
| 2817 | if ( iRow <= cNRowCum[ihdu] ) { |
---|
| 2818 | jRow = iRow - cNRowCum[ihdu-1] ; |
---|
| 2819 | sprintf( cMsg, "Moving %d(%d)", ihdu, hduId[ihdu] ) ; |
---|
| 2820 | log(LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg) ; |
---|
| 2821 | if ( fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ) { |
---|
| 2822 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, |
---|
| 2823 | "Failed to move HDU" ) ; |
---|
| 2824 | return 0L ; |
---|
| 2825 | } |
---|
| 2826 | break ; |
---|
| 2827 | } |
---|
| 2828 | } |
---|
| 2829 | } |
---|
| 2830 | sprintf( cMsg, "jRow = %ld", jRow ); |
---|
| 2831 | log(LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg) ; |
---|
| 2832 | |
---|
| 2833 | return jRow ; |
---|
| 2834 | } |
---|
| 2835 | |
---|
| 2836 | //----------------------------------------------------- GBTFITSreader::nIFPerHDU |
---|
| 2837 | |
---|
| 2838 | // get number of IFs per HDU |
---|
| 2839 | |
---|
| 2840 | Vector<Int> GBTFITSreader::nIFPerHDU() |
---|
| 2841 | { |
---|
| 2842 | const string methodName = "nIFPerHDU()" ; |
---|
| 2843 | //cNumKeys.resize( numHDU ) ; |
---|
| 2844 | cNumKeys.resize( 0 ) ; |
---|
| 2845 | cRefValKey.resize( 0 ) ; |
---|
| 2846 | cRefVal.resize( 0 ) ; |
---|
| 2847 | cIncVal.resize( 0 ) ; |
---|
| 2848 | cIFNO.resize( 0 ) ; |
---|
| 2849 | Vector<Int> nIF_per_HDU( numHDU, 0 ) ; |
---|
| 2850 | for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
---|
| 2851 | Vector<String> sampler( 0 ) ; |
---|
| 2852 | Vector<Double> rfreq( 0 ) ; |
---|
| 2853 | Vector<String> samprf( 0 ) ; |
---|
| 2854 | if ( fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ) { |
---|
| 2855 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, |
---|
| 2856 | "Failed to move HDU" ) ; |
---|
| 2857 | nIF_per_HDU = -1 ; |
---|
| 2858 | return nIF_per_HDU ; |
---|
| 2859 | } |
---|
| 2860 | int startpos = (int) cRefValKey.size() ; |
---|
| 2861 | int numkeys = 0 ; |
---|
| 2862 | for ( int irow = 0 ; irow < cNRowT[ihdu] ; irow++ ) { |
---|
| 2863 | char samp[24] ; |
---|
| 2864 | double rf ; |
---|
| 2865 | readData( SAMPLER, irow+1, samp ) ; |
---|
| 2866 | readData( RESTFRQ, irow+1, &rf ) ; |
---|
| 2867 | char sarf[48] ; |
---|
| 2868 | sprintf( sarf, "%d/%s/%lf", ihdu, samp, rf ) ; |
---|
| 2869 | String sr = String( sarf ) ; |
---|
| 2870 | if ( allNE( sr, samprf ) ) { |
---|
| 2871 | int oldsize = samprf.size() ; |
---|
| 2872 | samprf.resize( oldsize+1, True ) ; |
---|
| 2873 | samprf[oldsize] = sr ; |
---|
| 2874 | sprintf( cMsg, "added samprf = %s", sarf ) ; |
---|
| 2875 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
| 2876 | Double refval = getRefValLSR( irow+1 ) ; |
---|
| 2877 | double increm ; |
---|
| 2878 | readData(FqDelt, irow+1, &increm); |
---|
| 2879 | cRefValKey.push_back( sr ) ; |
---|
| 2880 | cRefVal.push_back( (double)refval ) ; |
---|
| 2881 | cIncVal.push_back( increm ) ; |
---|
| 2882 | numkeys++ ; |
---|
| 2883 | } |
---|
| 2884 | } |
---|
| 2885 | cNumKeys.push_back( numkeys ) ; |
---|
| 2886 | nIF_per_HDU[ihdu] = mergeIFPerHDU( startpos, numkeys ) ; |
---|
| 2887 | sprintf( cMsg, "number of IF for HDU %d = %d", |
---|
| 2888 | hduId[ihdu], nIF_per_HDU[ihdu] ) ; |
---|
| 2889 | log( LogOrigin( className, methodName, WHERE ), LogIO::NORMAL, cMsg ) ; |
---|
| 2890 | } |
---|
| 2891 | |
---|
| 2892 | return nIF_per_HDU ; |
---|
| 2893 | } |
---|
| 2894 | |
---|
| 2895 | Double GBTFITSreader::getRefValLSR( int irow ) |
---|
| 2896 | { |
---|
| 2897 | const string methodName = "getRefValLSR()" ; |
---|
| 2898 | |
---|
| 2899 | char keyw[9], ctype[9]; |
---|
| 2900 | sprintf(keyw, "CTYPE%ld", cFreqAxis+1); |
---|
| 2901 | readParm(keyw, TSTRING, ctype); |
---|
| 2902 | double fqRefVal ; |
---|
| 2903 | readData(FqRefVal, irow, &fqRefVal); |
---|
| 2904 | if ( strstr( ctype, "-LSR" ) == NULL && strstr( ctype, "LSRK" ) == NULL ) { |
---|
| 2905 | // need conversion |
---|
| 2906 | Int year, month ; |
---|
| 2907 | Double dd, hour, min, sec ; |
---|
| 2908 | char dateObs[32] ; |
---|
| 2909 | readData(DATE_OBS, irow, dateObs); |
---|
| 2910 | sscanf( dateObs, "%4d-%2d-%2lfT%lf:%lf:%lf", &year, &month, &dd, &hour, &min, &sec ) ; |
---|
| 2911 | dd = dd + ( hour * 3600.0 + min * 60.0 + sec ) / 86400.0 ; |
---|
| 2912 | dd = MVTime(year, month, dd).day() ; |
---|
| 2913 | double duration ; |
---|
| 2914 | readData(DURATION, irow, &duration) ; |
---|
| 2915 | dd += 0.5 * duration / 86400.0 ; |
---|
| 2916 | MEpoch me( Quantity( dd, "d" ), MEpoch::UTC ) ; |
---|
| 2917 | double antPos[3] ; |
---|
| 2918 | readParm( "SITELONG", TDOUBLE, antPos ) ; |
---|
| 2919 | readParm( "SITELAT", TDOUBLE, antPos+1 ) ; |
---|
| 2920 | readParm( "SITEELEV", TDOUBLE, antPos+2 ) ; |
---|
| 2921 | Vector<Double> pos( 2 ) ; |
---|
| 2922 | pos[0] = Double( antPos[0] ) ; |
---|
| 2923 | pos[1] = Double( antPos[1] ) ; |
---|
| 2924 | MPosition mp( MVPosition( Quantity( Double(antPos[2]), "m" ), |
---|
| 2925 | Quantum< Vector<Double> >( pos, "deg" ) ), |
---|
| 2926 | MPosition::WGS84 ) ; |
---|
| 2927 | double ra, dec ; |
---|
| 2928 | readData(RA, irow, &ra); |
---|
| 2929 | readData(DEC, irow, &dec); |
---|
| 2930 | MDirection md( Quantity( Double(ra), "deg" ), Quantity( Double(dec), "deg" ), MDirection::J2000 ) ; |
---|
| 2931 | MeasFrame mf( me, mp, md ) ; |
---|
| 2932 | MFrequency::Types fromType = MFrequency::DEFAULT ; |
---|
| 2933 | if ( strstr( ctype, "-OBS" ) != NULL ) { |
---|
| 2934 | fromType = MFrequency::TOPO ; |
---|
| 2935 | } |
---|
| 2936 | else if ( strstr( ctype, "-HEL" ) != NULL ) { |
---|
| 2937 | fromType = MFrequency::BARY ; |
---|
| 2938 | } |
---|
| 2939 | else if ( strstr( ctype, "-GEO" ) != NULL ) { |
---|
| 2940 | fromType = MFrequency::GEO ; |
---|
| 2941 | } |
---|
| 2942 | else if ( strstr( ctype, "-GAL" ) != NULL ) { |
---|
| 2943 | fromType = MFrequency::GALACTO ; |
---|
| 2944 | } |
---|
| 2945 | else if ( strstr( ctype, "REST" ) != NULL ) { |
---|
| 2946 | fromType = MFrequency::REST ; |
---|
| 2947 | } |
---|
| 2948 | MFrequency::Convert tolsr( fromType, MFrequency::Ref( MFrequency::LSRK, mf ) ) ; |
---|
| 2949 | Double world = tolsr( Double( fqRefVal ) ).get( "Hz" ).getValue() ; |
---|
| 2950 | char sampler[10]; |
---|
| 2951 | readData(SAMPLER,irow,sampler); |
---|
| 2952 | int hduId = 0 ; |
---|
| 2953 | fits_get_hdu_num( cSDptr, &hduId ) ; |
---|
| 2954 | sprintf( cMsg, "HDU %d Row %d (%s): before conversion %.7f, after conversion %.7f", hduId, irow, sampler, fqRefVal, world ) ; |
---|
| 2955 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
| 2956 | fqRefVal = (double)world ; |
---|
| 2957 | } |
---|
| 2958 | |
---|
| 2959 | return Double(fqRefVal) ; |
---|
| 2960 | } |
---|
| 2961 | |
---|
| 2962 | Double GBTFITSreader::getRefValLSR( long iRow, int idx, char *sampler, double restfreq ) |
---|
| 2963 | { |
---|
| 2964 | const string methodName = "getRefValLSR()" ; |
---|
| 2965 | |
---|
| 2966 | // get ihdu |
---|
| 2967 | // int hduid = 0 ; |
---|
| 2968 | // while ( iRow > cNRowCum[hduid] && hduid < numHDU) { |
---|
| 2969 | // hduid++ ; |
---|
| 2970 | // } |
---|
| 2971 | |
---|
| 2972 | // create key |
---|
| 2973 | // char sarf[48] ; |
---|
| 2974 | // sprintf( sarf, "%d/%s/%lf", hduid, sampler, restfreq ) ; |
---|
| 2975 | // String sr = String( sarf ) ; |
---|
| 2976 | |
---|
| 2977 | sprintf( cMsg, "Row %ld (%s): reference frequency %lf", iRow, sampler, cRefVal[idx] ) ; |
---|
| 2978 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
| 2979 | |
---|
| 2980 | if ( idx == (int)cRefValKey.size() ) { |
---|
| 2981 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Failed to get reference frequency value" ) ; |
---|
| 2982 | return 0.0 ; |
---|
| 2983 | } |
---|
| 2984 | |
---|
| 2985 | return cRefVal[idx] ; |
---|
| 2986 | } |
---|
| 2987 | |
---|
| 2988 | Int GBTFITSreader::mergeIFPerHDU( int start, int n ) |
---|
| 2989 | { |
---|
| 2990 | Int if0 = 0 ; |
---|
| 2991 | if ( cIFNO.size() > 0 ) { |
---|
| 2992 | if0 = max( cIFNO ) + 1 ; |
---|
| 2993 | } |
---|
| 2994 | cIFNO.resize( start+n, True ) ; |
---|
| 2995 | Vector< Vector<Double> > lIncVal( 0 ) ; |
---|
| 2996 | for ( int i = start ; i < start+n ; i++ ) { |
---|
| 2997 | Vector<Double> v( 2 ) ; |
---|
| 2998 | v[0] = cRefVal[i] ; |
---|
| 2999 | v[1] = cIncVal[i] ; |
---|
| 3000 | int idx = -1 ; |
---|
| 3001 | for ( int j = 0 ; j < (int)lIncVal.size() ; j++ ) { |
---|
| 3002 | if ( allEQ( v, lIncVal[j] ) ) { |
---|
| 3003 | idx = j ; |
---|
| 3004 | break ; |
---|
| 3005 | } |
---|
| 3006 | } |
---|
| 3007 | if ( idx == -1 ) { |
---|
| 3008 | int oldsize = lIncVal.size() ; |
---|
| 3009 | lIncVal.resize( oldsize+1, True ) ; |
---|
| 3010 | lIncVal[oldsize] = v ; |
---|
| 3011 | cIFNO[i] = if0 + oldsize ; |
---|
| 3012 | } |
---|
| 3013 | else { |
---|
| 3014 | cIFNO[i] = if0 + idx ; |
---|
| 3015 | } |
---|
| 3016 | } |
---|
| 3017 | return max(cIFNO) - if0 + 1 ; |
---|
| 3018 | } |
---|