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bmazin / ARCONS-pipeline

The software pipeline for ARCONS data reduction.
GNU General Public License v2.0
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Some pixels being turned 'hot' by calibration code? #7

Closed vaneyken closed 10 years ago

vaneyken commented 10 years ago

In building the stacked Crab Pulsar image, a couple of pixels appear to be being turned 'hot', where they are apparently fairly normal in the raw data. Presumably this is some glitch in the calibration. Best guess is the flatfielding code, hence technically assigning this to Matt, though it could well be a bug somewhere else (wavecal? beam map...?)

mstrader commented 10 years ago

Fixed at the moment by switching from flat-field calibrations (that try to correct uneven illumination and pixel-to-pixel variations in QE) to illumination calibrations (that only correct uneven illumination). To switch, use FileName.illumSoln() instead of FileName.flatSoln().