QC documentation system: QC procedure qc_TIMGFLAT.sh for NACO

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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NAME qc_TIMGFLAT.sh
VERSION 1.0 -- copied from ISAAC for NACO (2002-03-12)
1.1 -- incorporated from old NACO; new name qc_TIMGFLAT.sh (2005-08-23)
1.1 -- applies to both NACO twilight and sky flats 1.2 -- 2017-08-30 docu updated
SYNTAX SHELL
CALL processQC
from $DFS_PRODUCT/TIMGFLAT/$DATE:
qc_TIMGFLAT $date $primfile "
INSTRUMENT NACO
RAWTYPE TIMGFLAT
PURPOSE compares raw and product twilight/sky flat files for NACO QC assessment; the created plot is later reviewed within certifyProducts; it is stored in $DFO_PLT_DIR; it also extracts QC parameters and records them in the local qclog table; the procedure calls qc_TIMGFLAT.sh
PROCINPUT NACO MASTER_IMG_FLAT product;
QC1TABLE trending | table(s) in QC1 database:
naco_twflat
TRENDPLOT trending | HealthCheck plot associated to this procedure: none
QC1PAGE trending | associated documentation:
twflat_qc1.html
QC1PLOTS
top

qc_TIMGFLAT.png
box1: comparison master (red) <-> raw (blue);
upper panel: middle row and middle column, full pixel range, in ADU;
lower panel: middle row and middle column, central 100 pixels, in ADU
box 2: structure description; all columns (top) and all rows (bottom) are collapsed and displayed;
box 3: upper panel: flux level in consecutives raw frames
lower panel: histogram: all pixel values in log frequency histogram; raw: blue, master: red, reference: green;
there should be a dominant peak with Gaussian shape (which translates to parabola shape in this log freq diagram)
top label: name of analyzed master twilight/sky frame

qc_TIMGFLAT_diff.png
full display of difference of the master with corresponding reference frame

qc_TIMGFLAT_oe.png
odd-even column effect per quadrant

qc_TIMGFLAT_fpn.png
FPN per quadrant
QC1PARAM QC1 parameters written into QC1 table:
QC1db names in naco_twflat: fpn | gain | lamp_flux | dark_std | flat_med_min | flat_med_max
flat_min | flat_max | flat_median | flat_std | flat_tot
QC1db names in naco_twflat_oe: oc_UL/UR/LL/LR_mean | oc_UL/UR/LL/LR_std | ec_UL/UR/LL/LR_mean | ec_UL/UR/LL/LR_std
FITS key names: DET.DIT | DET.NDIT | DET.NCORRS.NAME | DET.MODE.NAME | ins_filter | ins_camera | ins_dichroics
QC1 params created by pipeline: gain, fpn, lamp flux
QC1 params created by this procedure:statistics in four quadrants and analysis of the odd-even column effect
ALGORITHM Description of algorithms:
For description of algorithms used by the recipe see the NACO Pipeline User Manual;
odd-even column/row analysis;
- Flux values for each raw frame per quadrant and per odd and even columns are derived;
- (odd minus even) / (odd + even) is estimated for each quadrant;
- mean values for all the frames in the stack are derived;
- stdev per quadrant from all the raw frame stack is derived
CERTIF Reasons for rejection:
- unusual structures or patterns (unless representative of the current state of detector);
- unusual illumination or reflections
- highest_flux/lowest_flux ratio less than few
Also full display of the local difference, i.e. of the master with closest in time conterpart is monitored.
COMMENTS NONE
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