[2696] | 1 | // |
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| 2 | // C++ Implementation: STCalTsys |
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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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[2703] | 7 | // Author: Takeshi Nakazato <takeshi.nakazato@nao.ac.jp> (C) 2012 |
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[2696] | 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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[2703] | 13 | #include <vector> |
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| 14 | #include "STSelector.h" |
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[2696] | 15 | #include "STCalTsys.h" |
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[2703] | 16 | #include "RowAccumulator.h" |
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| 17 | #include "STIdxIter.h" |
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| 18 | #include "STDefs.h" |
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| 19 | #include <atnf/PKSIO/SrcType.h> |
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[2696] | 20 | |
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[2703] | 21 | #include <casa/Arrays/ArrayMath.h> |
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[2696] | 22 | |
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[2703] | 23 | using namespace std; |
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[2696] | 24 | using namespace casa; |
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| 25 | |
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| 26 | namespace asap { |
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[2703] | 27 | STCalTsys::STCalTsys(CountedPtr<Scantable> &s, vector<int> &iflist) |
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| 28 | : STCalibration(s), |
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| 29 | iflist_(iflist) |
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[2696] | 30 | { |
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[2703] | 31 | applytable_ = new STCalTsysTable(*s); |
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[2696] | 32 | } |
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| 33 | |
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[2703] | 34 | void STCalTsys::calibrate() |
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[2696] | 35 | { |
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[2703] | 36 | STSelector selOrg = scantable_->getSelection(); |
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| 37 | STSelector sel; |
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| 38 | sel.setIFs(iflist_); |
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| 39 | scantable_->setSelection(sel); |
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| 40 | |
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| 41 | fillCalTable(); |
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| 42 | |
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| 43 | scantable_->setSelection(selOrg); |
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[2696] | 44 | } |
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| 45 | |
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[2703] | 46 | void STCalTsys::fillCalTable() |
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[2696] | 47 | { |
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[2703] | 48 | RowAccumulator acc(W_TINT); |
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| 49 | |
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| 50 | vector<string> cols(3); |
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| 51 | cols[0] = "IFNO"; |
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| 52 | cols[1] = "POLNO"; |
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| 53 | cols[2] = "BEAMNO"; |
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| 54 | STIdxIterAcc iter(scantable_, cols); |
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[2696] | 55 | |
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[2703] | 56 | ROScalarColumn<Double> *tcol = new ROScalarColumn<Double>(scantable_->table(), "TIME"); |
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| 57 | Vector<Double> timeSec = tcol->getColumn() * 86400.0; |
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| 58 | tcol->attach(scantable_->table(), "INTERVAL"); |
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| 59 | Vector<Double> intervalSec = tcol->getColumn(); |
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| 60 | delete tcol; |
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| 61 | ROScalarColumn<Float> *ecol = new ROScalarColumn<Float>(scantable_->table(), "ELEVATION"); |
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| 62 | Vector<Float> elevation = ecol->getColumn(); |
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| 63 | delete ecol; |
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[2696] | 64 | |
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[2703] | 65 | ROArrayColumn<Float> specCol(scantable_->table(), "TSYS"); |
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| 66 | ROArrayColumn<uChar> flagCol(scantable_->table(), "FLAGTRA"); |
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[2696] | 67 | |
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[2703] | 68 | // dummy Tsys: the following process doesn't need Tsys but RowAccumulator |
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| 69 | // requires to set it with spectral data |
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| 70 | Vector<Float> tsys(1, 1.0); |
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[2696] | 71 | |
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[2703] | 72 | Double timeCen = 0.0; |
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| 73 | Float elCen = 0.0; |
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| 74 | uInt count = 0; |
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[2696] | 75 | |
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[2703] | 76 | while(!iter.pastEnd()) { |
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| 77 | Vector<uInt> rows = iter.getRows(SHARE); |
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| 78 | Vector<uInt> current = iter.current(); |
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| 79 | uInt len = rows.nelements(); |
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| 80 | if (len == 0) { |
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| 81 | iter.next(); |
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| 82 | continue; |
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| 83 | } |
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| 84 | |
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| 85 | uInt nchan = scantable_->nchan(scantable_->getIF(rows[0])); |
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| 86 | Vector<uChar> flag(nchan); |
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| 87 | Vector<Bool> bflag(nchan); |
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| 88 | Vector<Float> spec(nchan); |
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[2696] | 89 | |
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[2703] | 90 | Vector<Double> timeSep(len); |
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| 91 | for (uInt i = 0; i < len-1; i++) { |
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| 92 | timeSep[i] = timeSec[rows[i+1]] - timeSec[rows[i]] ; |
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| 93 | } |
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| 94 | Double tMedian = median(timeSep(IPosition(1,0), IPosition(1,len-2))); |
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| 95 | timeSep[len-1] = tMedian * 10000.0 ; // any large value |
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| 96 | |
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| 97 | uInt irow ; |
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| 98 | uInt jrow ; |
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| 99 | for (uInt i = 0; i < len; i++) { |
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| 100 | irow = rows[i]; |
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| 101 | jrow = (i < len-1) ? rows[i+1] : rows[i]; |
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| 102 | // accumulate data |
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| 103 | flagCol.get(irow, flag); |
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| 104 | convertArray(bflag, flag); |
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| 105 | specCol.get(irow, spec); |
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| 106 | if ( !allEQ(bflag,True) ) |
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| 107 | acc.add( spec, !bflag, tsys, intervalSec[irow], timeSec[irow] ) ; |
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| 108 | timeCen += timeSec[irow]; |
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| 109 | elCen += elevation[irow]; |
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| 110 | count++; |
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| 111 | |
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| 112 | // check time gap |
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| 113 | double gap = 2.0 * timeSep[i] / (intervalSec[jrow] + intervalSec[irow]); |
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| 114 | if ( gap > 5.0 ) { |
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| 115 | if ( acc.state() ) { |
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| 116 | acc.replaceNaN() ; |
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| 117 | // const Vector<Bool> &msk = acc.getMask(); |
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| 118 | // convertArray(flag, !msk); |
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| 119 | // for (uInt k = 0; k < nchan; ++k) { |
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| 120 | // uChar userFlag = 1 << 7; |
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| 121 | // if (msk[k]==True) userFlag = 0 << 7; |
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| 122 | // flag(k) = userFlag; |
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| 123 | // } |
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| 124 | timeCen /= (Double)count * 86400.0; // sec->day |
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| 125 | elCen /= (Float)count; |
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| 126 | STCalTsysTable *p = dynamic_cast<STCalTsysTable *>(&(*applytable_)); |
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| 127 | p->appenddata(0, 0, current[2], current[0], current[1], |
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| 128 | timeCen, elCen, acc.getSpectrum()); |
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| 129 | } |
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| 130 | acc.reset() ; |
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| 131 | timeCen = 0.0; |
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| 132 | elCen = 0.0; |
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| 133 | count = 0; |
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| 134 | } |
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| 135 | } |
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| 136 | |
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| 137 | iter.next() ; |
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| 138 | } |
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[2696] | 139 | } |
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| 140 | |
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| 141 | } |
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