This page provides a place for the AP team to keep track of past and future configuration investigations.
|package||Output location||configuration parameter||tickets||discussion||investigation complete?|
|ip_diffim||doScaleTemplateVariance = True|
Use psfex as the PSF determiner (now the default)
Ian Sullivan increasing reduced chisq for PSF candidates to allow crowded field processing (from 3 to 20–enough to have about 100 candidates)
|Yes. Superseded by change to PSFEx.|
|Yes, but defaults still unset for obs_decam. Meredith to ticket.|
Lauren MacArthur added this during DC2 processing, but value depends on whether refcats have a reasonable range, whether there are refcat vs. science color differences
Current consensus (July 12, 21) is that this is too dataset-dependent to set a single default.
|ip_diffim||self.makeKernel.kernel.active.spatialBgOrder = 2||Shiu Liu (DESC DIA)'s analysis (10/4/2022) suggests ~50% reduction in artifacts going to a spatial order of 4|