Roman detector functionality updates from hackathon: a taxonomy of bad pixels

[rmandelb]

• hot pixels (of order 1k out of 6M pixels, typically), including their IPC pattern

• disconnected pixels: can't be read out or reset, keeps accumulating charge that leaks into 4 nearest neighbors

• low QE pixels, e.g., due to contamination / dust - can simulate using a QE map

• maps of IPC, persistence, etc. (enable spatial variations but also allow specific hot / low-QE / etc. pixels to have different behavior)

• unstable pixels: normal -> hot mode -> normal

[rmjarvis]

If these are implemented, it would now be in romanisim or similar outsider repo, not in GalSim proper.