WIP: [AGIPD][LITPX] Add lit-pixel counter statistics
This computes the number of lit-pixels for every detector image and write results in proc
files. After processing, this uses the number of lit pixels is used to identify lit/dark cells, locate the signal on detector and classify images into dark/background/hits. Classifications results are published in the run report.
Report example: AGIPDOfflineCorrection_p900230_r0275.pdf