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• Chuck: try to search for scratch in ASIC ONLY!
• Chris: try to change gate limits in dark processing to reproduce bad pixel in the middle stripe.

2023-05-12 low gain pixels

det_calib_ave_and_max -d exp=xpplw3319:run=293 -s XppGon.0:Epix100a.3 -n 100000

generates max-peds for 35998 events of xpplw3319-r0293

img-XppGon-0-Epix100a-3-xpplw3319-r0293-e035998-mode-p-max.npy

Image Added

use test algorithm test-2023-04-26-chuck.py

from img-XppGon-0-Epix100a-3-xpplw3319-r0293-e035998-mode-p-max.npy

find median and +/- 6 * (median of difference)

max-peds: shape:(704, 768) size:540672 dtype:float32 [135.05005 135.3999  177.94995 180.53003 176.6001 ...]

Summary of the bad pixel status evaluation
                   0o1:    10021 / 540672 ( 1.853%) pixels max-peds <= 127.788
                   0o2:     3689 / 540672 ( 0.682%) pixels max-peds >= 203.811
saved arr_status_med-peds.npy

           arr_status_med-peds.txt

cp arr_status_med-peds.txt /cds/data/psdm/xpp/xpplw3319/calib/Epix100a::CalibV1/XppGon.0:Epix100a.3/status_extra/0-end.data

Image Added

REFERENCES

• Paper in JAC: Automatic bad-pixel mask maker for X-ray pixel detectors with application to serial crystallography,
• Journal of Applied Crystallography - 2022 - Sadri - Automatic bad‐pixel mask maker for X‐ray pixel detectors with.pdf

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