Accumulation of spectra for image

10000 MiniCSPad images (185, 388, 2) of the cxi49812-r0203 were processed as flattened arrays of amplitude vs pixel and stored in the 2d array: spectra(143560, 120), where

• 143560 = 185*388*2 is a total number of pixels,
• 120 is a number of bins in the image amplitude range from -20 to 100 ADC units.
  Plots are shown for entire 2d array spectra and as a spectra of individual pixels with and without vertical scale cap.

Spectrum vs pixel number

Spectrum without cap

Spectrum with cap

Spectrum with cap and zoomed in

Spectra of a few pixels

Spectra are shown w/o and with vertical cap

Spectrum for pixel 100

Spectrum for pixel 1000

Spectrum for pixel 10000

Spectrum for pixel 100000

Summary

• The run cxi49812-r0203 has a very low photon rate/pixel < 0.001.
• Single photon peak in amplitude spectrum is not clearly seen.
• The gain correction map obtained for this run will not have sufficient precision.