Fix Version/s: None
DM-19524 using HiTS data.
- Identify some HiTS data in the [ap_verify_ci_hits2015https://github.com/lsst/ap_verify_ci_hits2015] repository;
- Fetch instcals corresponding to that data from the DECam archive;
- Using those instcals as both template and science image;
- Using A&L differencing, with decorrelation
demonstrate that you can recover raw DIASource counts comparable to those reported in DMTN-021.