| This documentation is intended both for QC scientists and SciOps astronomers (who may want to ignore the technical information displayed in grey). | ||||||||||||||||||||||||||||
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| bottom plots | contact | ||||||||||||||||||||||||||||
| NAME | bias_qc.prg | |||||||||||||||||||||||||||
| VERSION | 4.1 -- 22/04/2001 P. Sartoretti modified to deal with CHIP 1&2 in FORS2 4.3 -- 19/03/2008 smoehler modified for new imaging pipeline 4.4 -- 14/01/2010 smoehler modified to detect pattern | |||||||||||||||||||||||||||
| SYNTAX | MIDAS | |||||||||||||||||||||||||||
| CALL |
measureQuality from $DFS_PRODUCT/BIAS/$DATE: inmidas -P -j "@@ $DFO_PROC_DIR/bias_qc.prg $date $PF" | |||||||||||||||||||||||||||
| INSTRUMENT | FORS2 | |||||||||||||||||||||||||||
| RAWTYPE | BIAS | |||||||||||||||||||||||||||
| PURPOSE | compares raw and product BIAS files for FORS2 QC assessment; the plots are later reviewed within certifyProducts. The first plot (bias_grap1.png) is stored as Postscript file in $DFO_PLT_DIR. | |||||||||||||||||||||||||||
| PROCINPUT |
first raw BIAS from AB; MASTER_BIAS product; | |||||||||||||||||||||||||||
| QC1TABLE |
trending | table(s) in QC1 database: fors2_bias | |||||||||||||||||||||||||||
| TRENDPLOT |
trending | HealthCheck plot(s) associated to this procedure: trend_report_BIAS_med_master_HC.html | trend_report_BIAS_ron_master_HC.html | trend_report_BIAS_ron_raw_HC.html | trend_report_BIAS_fp_raw_HC.html | trend_report_BIAS_struct_raw_HC.html | trend_report_BIAS_pattern_HC.html | |||||||||||||||||||||||||||
| QC1PAGE |
trending | associated documentation: bias_qc1.html | |||||||||||||||||||||||||||
| QC1PLOTS top |
bias_grap1.png left: comparison master (red) <-> raw (black); upper panel: middle row and middle column, full pixel range, in ADU; lower panel: middle row and middle column, central 100 pixels, in ADU center: ratio master/reference upper panel: middle row and middle column, full pixel range, in ADU; lower panel: middle row and middle column, central 100 pixels, in ADU right: histogram: all pixel values of master bias in log frequency histogram (red), should show a dominant peak with Gaussian shape (which translates to parabola shape in this log freq diagram) top panel: date; name of analyzed master bias frame (red), first raw frame (black), reference frame (green) bottom panel: some QC1 parameters- number of raw files; noise (RON, noise_master); median (raw, master) bias_disp1.png full display of master frame bias_disp2.png full display of first raw frame bias_disp3.png full display of ratio master/reference (cuts=0.8,1.4) | |||||||||||||||||||||||||||
| QC1PARAM |
QC1 parameters written into QC1 table: QC1db names: datancom | median_master | master_ronexp | median_raw FITS key names: DATANCOM | MBIAS.LEVEL | MBIAS.RONEXP | BIAS.LEVEL QC1db names: struct | RON_r | FP_r | struct_r FITS key names: MBIAS.STRUCT | RON | BIAS.FPN | BIAS.STRUCT QC1db names: noise_master | ratio_master | pattern | pattern_bin FITS key names: MBIAS.NOISE | MBIAS.NRATIO | (bias_qc.prg) | (bias_qc.prg) QC1 params created by pipeline: all except pattern and pattern_bin | |||||||||||||||||||||||||||
| ALGORITHM |
Description of algorithms: pattern: rms of master bias averaged along y-axis to detect pattern pattern_bin: bin size for statistics of master bias averaged along y-axis (256 bins) | |||||||||||||||||||||||||||
| CERTIF |
Reasons for rejection: - unusually high bias level or RON level (unless representative); - unusual structure, esp. vertical stripes (1x1 binning shows a bright row in chip 2 - that is ok); - non-Gaussian shape of histogram; - DATANCOM lower than usual (5), especially if N=5 version nearby in time | |||||||||||||||||||||||||||
| COMMENTS | ||||||||||||||||||||||||||||
| top | [2015-11-05T15:45:20] created by qcDocu v1.1.2, a tqs tool | |||||||||||||||||||||||||||
