The attached txt files provide side-by-side statistics for the LSST and HSC RC dataset runs for various internal comparisons (direct comparisons of matched source between the two runs will be presented in DM-6817). The *_sum.txt show the per visit/tract results, whereas the *_shortSum.txt show just the averages over the visit/tract entries.

hscVisitAnalysis => single frame measurement results
hscCoaddAnalysis => coadd measurement results
hscColorAnalysis => stellar locus on coadds

All of the diagnostics shown have accompanying figures. Several example plots are also attached (these are all from the LSST runs. The associated HSC run figures have also been generated.)

See DM-6816 for a summary of the astrometric and photometric metric comparisons (after running meas_mosaic).

There's some analysis of these results on DM-6817, but I'm not sure if there's any further commentary to come on this story. Lauren MacArthur, can you provide a brief summary of the results, please?

The recently created tickets DM-8532 & DM-8533 capture the most pressing issues, as revealed by this ticket and DM-6817, to get to the bottom of. From discussions in the regular Monday morning meeting here at Princeton, I will be focussing first on a look at the brightest stars being used in the psf modeling looking in particular at their footprints and distribution of peaks (as a function of distance from the centroid).

For direct comparison of the plot that revealed the main issues (see comments in DM-6817), I have also attached the HSC version. So, compare:
LSST stack

with
HSC stack

The "bump" at bright magnitudes is not present in the latter and the large density of objects that have likely been misclassified as galaxies (namely the strip of red objects just below the threshold for the star/galaxy classification) in the LSST stack plot has much lower density in the HSC plot.