Details

Type: Epic

Status: Done

Resolution: Done

Fix Version/s: None

Component/s: None

Labels:

Epic Name:KPM: TE1, FY15

WBS:02C.04

Team:Data Release Production

Cycle:Summer 2015
Description
This will be measured on precursor data (almost certainly from HSC, via DM2380) using the following procedure:
 Run visitlevel processing (i.e. ProcessCcdTask, probably via the new HSC driver ported on
DM3368).  Compute the residual ellipticity correlation function separately in each visit. Bob Armstrong has code we can probably use for this (and will be at LSST2015 to help). The stile project (https://github.com/msimet/Stile) may be another solution (and perhaps a better longterm one).
 Compute the median correlation function (at separation bins) over multiple visits.
This will be done in whichever of r or i band has better public HSC data.
The same measurement procedure will be used for TE2 (DLP308) in S15 (DM3047).
Attachments
Issue Links
 is blocked by

DM3895 Provide values for PSF ellipticity KPMs in FY15
 Done
 is contained by

DM23539 Incorporate Rowe statistics
 Done
 relates to

DM8951 Add TE1 and TE2 KPMs to validate_drp using code developed in DM3040
 Done

DLP290 Residual PSF Ellipticity Correlations: TE1
 Closed
(1 mentioned in)
The data used in this KPM was the iband single visit data from the public HSC engineering run.
To create the plot I took the stars from each visit that were selected for the psf modeling and computed the difference in ellipticities between the model of the psf and the sdss moments. I then computed the average dot product of the residuals for all pairs of stars at different separation distances.
Once this was computed for each visit I then took the median from all of the iband visits to create the points in the plot.
Reading off the plot, the residual correlations are:
DM3047) requirement: 500e5Both of these are well below the requiremnt