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  - Q: definition of robust parameters
    A: robust mean is median xi
       robust   robust sigma is median |xi-mu|
  - Q: difference in algorithms
    A:
    - for dark intensity and rms is algorithms are about the same
    - Philip evaluated gains for a few detectors

       - but in general we do not have/use bad pixel status for gain factors (generated from flat field)

       WE NEED IN LIGHT FLAT FIELD DATA IN ALL GAIN RANGES ALONG WITH DARK

     - for gain and bad pixel status - do not use stat analysis of the flat field

  - Q: What do you expect us to do about bad pixel mask improvement?
    A:
      - their code is terrible
      - re-implement and try their algorithms
  - Q: need help in analysis algorithms to check the bad pixel mask
       - hit rate
       - indexing efficiency
    A: - Chuck's team can do that
  - Chuck: start with "flat field" sample for epix_alc3 and try to find bad  pixels "next to central row and "scratch"

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