Pipeline Setup and Configurations for DIA production

[rearmstr]

For the DIA production we need to define the set of algorithms to use and the changes to the existing configurations. The algorithms that need to be run are:

• calexp processing same as DRP
• coaddDriver for template generation on a select set of calexps
• imageDifferenceDriver to compute compute difference images on calexps not used for template
• associationDriver to create diaObject catalog
• forcedPhotCcdDiaDriver to run forced photometry on difference images at the positions of the diaObjects
• forcedPhotCoaddDiaDriver to run forced photometry on the template at the positions of the diaObjects

The configuration parameters that need to be specified:

• Define time frame for generation of template coadds
• Define seeing range for template coadds
• Define difference imaging algorithm and configuration
• Define set of measurements to run for forced photometry. The default configuration has only psf flux. It probably makes sense to add some set of aperture photometry measurements. The standard apertures defined have radii of [3.0, 4.5, 6.0, 9.0, 12.0, 17.0, 25.0, 35.0, 50.0, 70.0] pixels. Are there other fluxes people want?

[heather999]

It sounds we may need to create a separate obs_lsst branch for Run3.0i that is based on the existing dc2/run2.2 branch, with some config modifications?

[katrinheitmann]

Any future effort will use Gen-3 and the list would need to be redone.