QC documentation system: QC procedure hawki_flat.py for HAWKI

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 hawki_flat.py
VERSION 1.0 -- adapted from HAWKI/hawki_dark.html (Feb 2009)
SYNTAX SHELL
CALL hawki_flat.py
from $DFS_PRODUCT/FLAT/$DATE:
hawki.processQC -a <AB>
INSTRUMENT HAWKI
RAWTYPE DARK
PURPOSE compares raw and product FLAT files for HAWK-I QC assessment; the plots are later reviewed within certifyProducts. All plots are stored in $DFO_PLT_DIR/$DATE.
PROCINPUT first and last raw FLATs from AB; FLAT_IM and FLAT_STATS products;
currently not analyzed: BPM_HOT
QC1TABLE trending | table(s) in QC1 database:
hawki_twflat
TRENDPLOT trending | HealthCheck plot(s) associated to this procedure:
None_so_far...
QC1PAGE trending | associated documentation:
flat_qc1.html
QC1PLOTS
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flat_plt_A_1.png
So called 'Flux Growth Curves' (since the plot was first developed for twilight FLATs); The plot shows for each of the four detectors the median value and the standard deviation of each RAW frame in the stack. The four plots for each statistic are arranged in a 2x2 grid replicating the physical layout of detectors. Medians are the left four, standard deviations are the right four. Statistics are taken from the FLAT_STATS product produced by the pipeline. The AB name (top middle), night date (top right), product name (bottom left), reference AB and reference frame (bottom right), DIT, NDIT and DATNCOM (top right), pipeline version (bottom left) and creation date (bottom right) are all documented.

flat_plt_A_2.png
Odd/Even COLUMN and ROW effects; The plot shows for each of the four detectors the:
Top left four plots): Odd/Even Column median statistics, each plotted point is the mean value of odd columns over even columns Top right four plots): Odd/Even Column standard deviation statistics, each plotted point is the standard deviation of odd columns over even columns Bottom left four plots): Odd/Even Row median statistics, each plotted point is the mean value of odd rows over even rows Bottom right four plots): Odd/Even Row standard deviation statistics, each plotted point is the standard deviation of odd rows over even rows

flat_plt_1_1.png
Standard pyqc mstplt report for Q1 consisting of:
subplot#1: plots across one row for the first and last RAW frames in the stack and the master. The row plotted is specified as centrow in config_flat.py
subplot#2: plots across one column for the first and last RAW frames in the stack and the master. The row plotted is specified as centcol in config_flat.py
subplot#3: Histograms of pixel values for the first RAW frame of the stack, the master, and a gaussian fit to the master.
subplot#4: zoom plots across one row for the first and last RAW frames in the stack and the master. The row plotted is specified as xcentrange in config_flat.py
subplot#5: zoom plots across one column for the first and last RAW frames in the stack and the master. The row plotted is specified as ycentrange in config_flat.py
subplot#6: Averages of all columns and all rows of the master
subplot#7: plots across one row for the difference of the master and the reference master. The row plotted is specified as centrow in config_flat.py If no reference is found this plot is not shown.
subplot#8: plots across one column for the difference of the master and the reference master. The row plotted is specified as centcol in config_flat.py If no reference is found this plot is not shown.
subplot#9: Histogram of pixel values for the difference of the master and the reference master. If no reference is found this plot is not shown.

flat_plt_2_1.png
Standard pyqc mstplt report for Q2 as for Q1
flat_plt_3_1.png
Standard pyqc mstplt report for Q3 as for Q1
flat_plt_4_1.png
Standard pyqc mstplt report for Q4 as for Q1

flat_ima_A_1.png
full display of master frame (graphic created by hawki.ds9Im script run by hawki_flat.py but can be run standalone also)
flat_ima_A_2.png
closeup of central region of each chip of master frame (graphic created by hawki.ds9Im script run by hawki_flat.py but can be run standalone also)
flat_ima_A_3.png
full display of difference between master frame and Reference master frame (graphic created by hawki.ds9Im script run by hawki_flat.py but can be run standalone also)
flat_ima_A_4.png
closeup of central region of each chip of difference between master frame and Reference master frame (graphic created by hawki.ds9Im script run by hawki_flat.py but can be run standalone also)
QC1PARAM QC1 parameters written into QC1 table:
QC1db names: qc_flat_norm | qc_flat_medmin | qc_flat_medmax | qc_flat_medmean | qc_flat_medmed | qc_flat_medstdev | qc_flat_nbadpix
FITS key names: QC.FLAT.NORM | QC.FLAT.MEDMIN | QC.FLAT.MEDMAX | QC.FLAT.MEDMEAN | QC.FLAT.MEDMED | QC.FLAT.MEDSTDEV | QC.FLAT.NBADPIX
QC1 params created by pipeline: all
QC1 params created by this procedure: none
ALGORITHM Description of algorithms:
TBD...
CERTIF Reasons for rejection:
  • Too few exposures in stack to adequately sample the ful linear dynamic range of the detectors, as a rule of thumb at least 10 frames well distributed over the range ~5000--30000 ADU
  • Observations affected by dew on cryostat entrance window
COMMENTS None
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