- makeDiscreteSkyMap.py for HiTS 2014
- makeCoaddTempExp.py on HiTS 2014
- assembleCoadd.py on the result
- ap_pipe.py on HiTS 2015 with the newly assembled coadds as templates
The relevant repositories are on lsst-dev in /project/mrawls/hits2014/rerun/2020_01_coadds_full and /project/mrawls/hits2015/rerun/cw_2020_01.
I chose not to mess with nImagesMax in the makeCoaddTempExp step with BestSeeingWcsSelectImagesTask this time, and instead left it large (1000) as before. It does take a day or so to make new warps for all 3 fields with only 2 parallel processes, but this isn't presently prohibitive.
Instead, I adjusted maxPsfFwhm=1.4 arcsec (again in BestSeeingWcsSelectImagesTask). This is because it was previously set too high (> 4), a value which would make sense if it were in pixels but was errantly allowing essentially all of the images to be selected rather than just some with better seeing than others.
There were no problems seen in the output, and the excess sources seen in the Dec 2019 rerun have disappeared.
I noted an increase in the total DIA Source count and a decrease in the good DIA source count, which is attributable to fewer visits comprising the templates. This results in (1) slightly greater chip gap template coverage in December than in January as well as (2) larger regions masked SENSOR_EDGE in December compared to January. These effects are visible in the plots in this notebook.
I recommend adopting these new templates for all our ap_verify HiTS datasets. I made
DM-23311 for this.