QC documentation system: QC procedure dark_qc.prg for FORS2

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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bias_qc.prg dark_qc.prg detmon_qc.prg lamp_chk_qc.prg
flat_scr_qc.prg lamp_std_qc.prg lamp_lss_qc.prg lamp_mos_qc.prg lamp_mxu_qc.prg lamp_pmos_qc.prg
flat_sky_qc.prg std_ima_qc.prg std_lss_qc.prg std_mos_qc.prg std_pmos_qc.prg
sci_img_qc_dimm.prg sci_lss_qc.prg sci_mos_qc.prg sci_mxu_qc.prg sci_pmos_qc.prg
 
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NAME dark_qc.prg
VERSION 1.0 -- basic functions
1.1 -- FORS2 adaptation (fpatat, 10/05/2000)
1.2 -- raw analysis removed. 4port conad added
1.3 -- Paola Sartoretti : adapt to FORS2 - MIT CCD, and added error (RON)
SYNTAX MIDAS
CALL measureQuality
from $DFS_PRODUCT/DARK/$DATE:
inmidas -P -j "@@ $DFO_PROC_DIR/dark_qc.prg $date $PF"
INSTRUMENT FORS2
RAWTYPE DARK
PURPOSE checks product DARK file for FORS2 QC assessment; the plots are later reviewed within certifyProducts. The first plot (dark_grap1.png) is stored as Postscript file in $DFO_PLT_DIR.
PROCINPUT MASTER_DARK product;
QC1TABLE trending | table(s) in QC1 database:
fors2_dark
TRENDPLOT trending | HealthCheck plot(s) associated to this procedure:
trend_report_DARK_HC.html
QC1PAGE trending | associated documentation:
dark_qc1.html
QC1PLOTS
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dark_grap1.png
left: averaged central rows and columns of all quadrants of master dark in e-/hr/pix (median filtered with window size of 7 pixels)
clockwise from top left: Y200...300, X450...550, X1450...1550, Y700...800
right: histogram: all pixel values of master dark in log frequency histogram; should show dominant peak with Gaussian shape (which translates to parabola shape in this log freq diagram)
top panel: date; name of analyzed master dark frame (left, red); number of frames, exposure time, conversion factor (right, black)
bottom panel: some QC1 parameters- median_master and sigma_master in e-/px/hr

dark_disp1.png
full display of master frame
QC1PARAM QC1 parameters written into QC1 table:
QC1db names: datancom | dark_avg | sigma_dark_avg | dark_A(BCD) | sigma_dark_A(BCD) | median_master | sigma_master
FITS key names: DATANCOM | (dark_qc.prg) | (dark_qc.prg) | (dummy) | (dummy) | DATAMED | DATARMS
QC1 params created by pipeline: datancom, median_master, sigma_master
QC1 params created by this procedure: all except datancom, median_master, sigma_master
ALGORITHM Description of algorithms:
dark_avg: median level of master dark averaged over X200...1800, Y400...800 in e-/hr/pix, excluding values outside +-50
sigma_dark_avg: RON/exp.time*3600 in e-/hr/pix
median_master: statistics (median) of full master frame
sigma_master: statistics (std_dev) of full master frame
CERTIF Reasons for rejection:
- unusual structure;
- non-Gaussian shape of histogram;
- DATANCOM lower than usual (3), especially if N=3 version nearby in time
COMMENTS QC1 DB columns dark_A(BCD) and sigma_dark_A(BCD) contains always "none".
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