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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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 <vector> |
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14 | #include "STSelector.h" |
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15 | #include "STCalTsys.h" |
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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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20 | |
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21 | #include <casa/Arrays/ArrayMath.h> |
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22 | |
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23 | using namespace std; |
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24 | using namespace casa; |
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25 | |
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26 | namespace asap { |
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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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30 | { |
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31 | applytable_ = new STCalTsysTable(*s); |
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32 | } |
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33 | |
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34 | void STCalTsys::setupSelector() |
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35 | { |
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36 | sel_.reset(); |
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37 | sel_.setIFs(iflist_); |
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38 | } |
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39 | |
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40 | void STCalTsys::fillCalTable() |
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41 | { |
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42 | RowAccumulator acc(W_TINT); |
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43 | |
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44 | vector<string> cols(3); |
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45 | cols[0] = "IFNO"; |
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46 | cols[1] = "POLNO"; |
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47 | cols[2] = "BEAMNO"; |
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48 | STIdxIterAcc iter(scantable_, cols); |
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49 | |
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50 | ROScalarColumn<Double> *tcol = new ROScalarColumn<Double>(scantable_->table(), "TIME"); |
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51 | Vector<Double> timeSec = tcol->getColumn() * 86400.0; |
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52 | tcol->attach(scantable_->table(), "INTERVAL"); |
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53 | Vector<Double> intervalSec = tcol->getColumn(); |
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54 | delete tcol; |
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55 | ROScalarColumn<Float> *ecol = new ROScalarColumn<Float>(scantable_->table(), "ELEVATION"); |
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56 | Vector<Float> elevation = ecol->getColumn(); |
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57 | delete ecol; |
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58 | |
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59 | ROArrayColumn<Float> specCol(scantable_->table(), "TSYS"); |
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60 | ROArrayColumn<uChar> flagCol(scantable_->table(), "FLAGTRA"); |
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61 | ROScalarColumn<uInt> freqidCol(scantable_->table(), "FREQ_ID"); |
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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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73 | Vector<uInt> current = iter.current(); |
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74 | uInt len = rows.nelements(); |
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75 | if (len == 0) { |
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76 | iter.next(); |
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77 | continue; |
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78 | } |
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79 | |
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80 | uInt nchan = scantable_->nchan(scantable_->getIF(rows[0])); |
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81 | Vector<uChar> flag(nchan); |
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82 | Vector<Bool> bflag(nchan); |
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83 | Vector<Float> spec(nchan); |
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84 | |
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85 | Vector<Double> timeSep(len); |
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86 | for (uInt i = 0; i < len-1; i++) { |
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87 | timeSep[i] = timeSec[rows[i+1]] - timeSec[rows[i]] ; |
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88 | } |
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89 | Double tMedian = median(timeSep(IPosition(1,0), IPosition(1,len-2))); |
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90 | timeSep[len-1] = tMedian * 10000.0 ; // any large value |
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91 | |
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92 | uInt irow ; |
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93 | uInt jrow ; |
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94 | for (uInt i = 0; i < len; i++) { |
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95 | irow = rows[i]; |
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96 | jrow = (i < len-1) ? rows[i+1] : rows[i]; |
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97 | // accumulate data |
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98 | flagCol.get(irow, flag); |
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99 | convertArray(bflag, flag); |
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100 | specCol.get(irow, spec); |
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101 | if ( !allEQ(bflag,True) ) |
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102 | acc.add( spec, !bflag, tsys, intervalSec[irow], timeSec[irow] ) ; |
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103 | timeCen += timeSec[irow]; |
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104 | elCen += elevation[irow]; |
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105 | count++; |
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106 | |
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107 | // check time gap |
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108 | double gap = 2.0 * timeSep[i] / (intervalSec[jrow] + intervalSec[irow]); |
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109 | if ( gap > 5.0 ) { |
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110 | if ( acc.state() ) { |
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111 | acc.replaceNaN() ; |
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112 | // const Vector<Bool> &msk = acc.getMask(); |
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113 | // convertArray(flag, !msk); |
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114 | // for (uInt k = 0; k < nchan; ++k) { |
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115 | // uChar userFlag = 1 << 7; |
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116 | // if (msk[k]==True) userFlag = 0 << 7; |
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117 | // flag(k) = userFlag; |
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118 | // } |
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119 | timeCen /= (Double)count * 86400.0; // sec->day |
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120 | elCen /= (Float)count; |
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121 | STCalTsysTable *p = dynamic_cast<STCalTsysTable *>(&(*applytable_)); |
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122 | p->appenddata(0, 0, current[2], current[0], current[1], |
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123 | freqidCol(irow), timeCen, elCen, acc.getSpectrum()); |
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124 | } |
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125 | acc.reset() ; |
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126 | timeCen = 0.0; |
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127 | elCen = 0.0; |
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128 | count = 0; |
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129 | } |
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130 | } |
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131 | |
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132 | iter.next() ; |
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133 | } |
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134 | } |
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135 | |
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136 | } |
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