[2703] | 1 | //
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| 2 | // C++ Implementation: STCalibration
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| 3 | //
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| 4 | // Description:
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| 5 | //
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| 6 | //
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| 7 | // Author: Takeshi Nakazato <takeshi.nakazato@nao.ac.jp> (C) 2012
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| 8 | //
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| 9 | // Copyright: See COPYING file that comes with this distribution
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| 10 | //
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| 11 | //
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| 12 |
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| 13 | #include "STCalibration.h"
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| 14 | #include "STCalSkyTable.h"
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[2915] | 15 | #include "RowAccumulator.h"
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| 16 | #include "STIdxIter.h"
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[2703] | 17 |
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| 18 | using namespace casa;
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| 19 |
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| 20 | namespace asap {
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[2915] | 21 | STCalibration::STCalibration(CountedPtr<Scantable> &s, const String target_column)
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| 22 | : scantable_(s),
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| 23 | target_column_(target_column)
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[2703] | 24 | {
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| 25 | }
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| 26 |
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[2742] | 27 | void STCalibration::calibrate()
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| 28 | {
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| 29 | STSelector selOrg = scantable_->getSelection();
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[2786] | 30 | setupSelector(selOrg);
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[2742] | 31 | scantable_->setSelection(sel_);
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| 32 |
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| 33 | fillCalTable();
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| 34 |
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| 35 | scantable_->setSelection(selOrg);
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[2703] | 36 | }
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[2742] | 37 |
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[2915] | 38 | void STCalibration::fillCalTable()
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| 39 | {
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| 40 | RowAccumulator acc(W_TINT);
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| 41 |
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| 42 | vector<string> cols(3);
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| 43 | cols[0] = "IFNO";
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| 44 | cols[1] = "POLNO";
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| 45 | cols[2] = "BEAMNO";
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[2916] | 46 | STIdxIter2 iter(scantable_, cols);
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[2915] | 47 |
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| 48 | ROScalarColumn<Double> *tcol = new ROScalarColumn<Double>(scantable_->table(), "TIME");
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| 49 | Vector<Double> timeSec = tcol->getColumn() * 86400.0;
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| 50 | tcol->attach(scantable_->table(), "INTERVAL");
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| 51 | Vector<Double> intervalSec = tcol->getColumn();
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| 52 | delete tcol;
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| 53 | ROScalarColumn<Float> *ecol = new ROScalarColumn<Float>(scantable_->table(), "ELEVATION");
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| 54 | Vector<Float> elevation = ecol->getColumn();
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| 55 | delete ecol;
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| 56 |
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| 57 | ROArrayColumn<Float> specCol(scantable_->table(), target_column_);
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| 58 | ROArrayColumn<uChar> flagCol(scantable_->table(), "FLAGTRA");
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| 59 | ROScalarColumn<uInt> freqidCol(scantable_->table(), "FREQ_ID");
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[2958] | 60 | ROScalarColumn<uInt> flagrowCol(scantable_->table(), "FLAGROW");
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| 61 | Vector<uInt> flagrow = flagrowCol.getColumn();
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[2915] | 62 |
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| 63 | // dummy Tsys: the following process doesn't need Tsys but RowAccumulator
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| 64 | // requires to set it with spectral data
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| 65 | Vector<Float> tsys(1, 1.0);
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| 66 |
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| 67 | Double timeCen = 0.0;
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| 68 | Float elCen = 0.0;
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| 69 | uInt count = 0;
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| 70 |
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| 71 | while(!iter.pastEnd()) {
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| 72 | Vector<uInt> rows = iter.getRows(SHARE);
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[2916] | 73 | Record current = iter.currentValue();
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[2915] | 74 | //os_ << "current=" << current << LogIO::POST;
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| 75 | uInt len = rows.nelements();
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| 76 | if (len == 0) {
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| 77 | iter.next();
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| 78 | continue;
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| 79 | }
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| 80 | else if (len == 1) {
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| 81 | uInt irow = rows[0];
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[2958] | 82 | if (flagrow[irow] == 0) {
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| 83 | appenddata(0, 0, current.asuInt("BEAMNO"), current.asuInt("IFNO"), current.asuInt("POLNO"),
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| 84 | freqidCol(irow), timeSec[irow], elevation[irow], specCol(irow),
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| 85 | flagCol(irow));
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| 86 | }
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[2915] | 87 | iter.next();
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| 88 | continue;
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| 89 | }
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| 90 |
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| 91 | uInt nchan = scantable_->nchan(scantable_->getIF(rows[0]));
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| 92 | Vector<uChar> flag(nchan);
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| 93 | Vector<Bool> bflag(nchan);
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| 94 | Vector<Float> spec(nchan);
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| 95 |
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| 96 | Vector<Double> timeSep(len);
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| 97 | for (uInt i = 0; i < len-1; i++) {
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| 98 | timeSep[i] = timeSec[rows[i+1]] - timeSec[rows[i]] ;
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| 99 | }
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| 100 | Double tMedian = median(timeSep(IPosition(1,0), IPosition(1,len-2)));
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| 101 | timeSep[len-1] = tMedian * 10000.0 ; // any large value
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| 102 |
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| 103 | uInt irow ;
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| 104 | uInt jrow ;
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| 105 | for (uInt i = 0; i < len; i++) {
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| 106 | //os_ << "start row " << rows[i] << LogIO::POST;
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| 107 | irow = rows[i];
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| 108 | jrow = (i < len-1) ? rows[i+1] : rows[i];
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| 109 | // accumulate data
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| 110 | flagCol.get(irow, flag);
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| 111 | convertArray(bflag, flag);
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| 112 | specCol.get(irow, spec);
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[2958] | 113 | if ( !allEQ(bflag,True) && flagrow[irow] == 0 )
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[2915] | 114 | acc.add( spec, !bflag, tsys, intervalSec[irow], timeSec[irow] ) ;
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| 115 | timeCen += timeSec[irow];
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| 116 | elCen += elevation[irow];
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| 117 | count++;
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| 118 |
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| 119 | // check time gap
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| 120 | double gap = 2.0 * timeSep[i] / (intervalSec[jrow] + intervalSec[irow]);
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| 121 | if ( gap > 1.1 ) {
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| 122 | if ( acc.state() ) {
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| 123 | acc.replaceNaN() ;
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| 124 | // const Vector<Bool> &msk = acc.getMask();
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| 125 | // convertArray(flag, !msk);
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| 126 | // for (uInt k = 0; k < nchan; ++k) {
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| 127 | // uChar userFlag = 1 << 7;
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| 128 | // if (msk[k]==True) userFlag = 0 << 7;
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| 129 | // flag(k) = userFlag;
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| 130 | // }
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| 131 | timeCen /= (Double)count * 86400.0; // sec->day
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| 132 | elCen /= (Float)count;
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[2955] | 133 | const Vector<Bool> &mask = acc.getMask();
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| 134 | Vector<uChar> flag(mask.shape(), (uChar)0);
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| 135 | const uChar userFlag = 1 << 7;
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| 136 | for (uInt k = 0; k < flag.nelements(); ++k) {
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[2958] | 137 | if (mask[k] == False)
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[2955] | 138 | flag[k] = userFlag;
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| 139 | }
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| 140 | appenddata(0, 0, current.asuInt("BEAMNO"), current.asuInt("IFNO"),
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| 141 | current.asuInt("POLNO"),
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| 142 | freqidCol(irow), timeCen, elCen,
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| 143 | acc.getSpectrum(), flag);
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[2915] | 144 | }
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| 145 | acc.reset() ;
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| 146 | timeCen = 0.0;
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| 147 | elCen = 0.0;
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| 148 | count = 0;
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| 149 | }
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| 150 | }
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| 151 |
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| 152 | iter.next() ;
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| 153 | //os_ << "end " << current << LogIO::POST;
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| 154 | }
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[2742] | 155 | }
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[2915] | 156 |
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| 157 | }
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