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 |
sci_mos_qc_2CCD.prg
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VERSION |
1.0 -- adapted for new pipeline (SM, 10/2006)
1.0 -- adapted for new CCDs (SM, 04/2007)
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SYNTAX |
MIDAS
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CALL |
measureQuality
from $DFS_PRODUCT/SCI_MOS/$DATE:
inmidas -P -j "@@ $DFO_PROC_DIR/sci_mos_qc.prg $date $PF"
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INSTRUMENT |
FORS1
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RAWTYPE |
SCI_MOS
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PURPOSE |
compares raw and product SCI_MOS files
for FORS1 QC assessment; the plots are later reviewed
within certifyProducts and stored in $DFO_PLT_DIR.
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PROCINPUT |
raw image from AB; SCI_MOS product;
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QC1TABLE |
trending | table(s) in QC1 database:
fors1_sci_mos
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TRENDPLOT |
trending | HealthCheck plot associated to this procedure: none
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QC1PAGE |
trending | associated documentation: none
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QC1PLOTS
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sci_mos_grap1.png
extracted, sky-subtracted spectra of 4 brightest sources (black) with error spectrum (red) and extracted sky background for brightest objects (green)
sci_mos_grap2.png
position of a bright sky line along the slitlets
sci_mos_disp1.png
full display of reduced frame
sci_mos_disp2.png
full display of raw frame
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QC1PARAM |
QC1 parameters written into QC1 table:
QC1db names: skyline_position | skyline_rms | skyline_offset | skyline_number | avg_accuracy
QC1 params created by pipeline: avg_accuracy (from wavelength calibration data)
QC1 params created by this procedure: all others
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ALGORITHM |
Description of algorithms:
The whole rebinned frame is searched for emission lines. Then lines within +/- 1 pixel around skyline_position are selected and their offset with respect to the reference line is determined.
The mean and rms of these offsets are stored in skyline_offset and skyline_rms.
The number of skylines used is stored in skyline_number
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CERTIF |
Reasons for rejection:
- many missing slitlets or many slitlets with bad wavelength calibration
- many curved slitlets
- if only a few slitlets are missing or badly calibrated (offsets in sky lines, curved lines) just add a comment and certify.
- skyline offsets of more than 0.3 pixels violate the nominal calibration accuracy,
but may be due to temperature differences between science and calibration data and
are no cause for rejection
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COMMENTS |
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[2009-07-30T07:17:28] created by qcDocu v1.1, a tqs tool
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