[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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[3106] | 18 | using namespace casacore; |
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[2703] | 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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[3094] | 84 | freqidCol(irow), timeSec[irow] / 86400.0, elevation[irow], specCol(irow), |
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[2958] | 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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