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Module ImgAlgos::ImgCalib

ImgCalib gets the input raw image from data, subtracts pedestals and normalized background, applys the gain factors mask and maskthreshold, and saves the corrected image in the event.

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• ImgCalib uses the source and key_in parameters to get the input raw image (as ndarray<double,2> object),
• gets the calibration parameters from files fname_peds, fname_bkgd, fname_gain, and fname_mask, if their names are specified,
• the specified by the file name corrections are applied per-pixel to raw data image as follows:

  Code Block
  A_cor =

  (

  A_raw (1) - pedestal (2) - N*background (3) * gain

  (*apply) mask,

  (4) apply mask (5) apply threshold

• corrected image is saved in the event with key key_out.

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• source (default: "DetInfo(:Camera)") – source of data,
• key_in (default: "") – key for input image,
• key_out (default: "calibrated") – output key for calibrated image saved in event,
• fname_peds (default: "") – input file name for pedestals
• fname_bkgd (default: "") – input file name for background,
• fname_gain (default: "") – input file name for gain,
• fname_mask (default: "") – input file name for mask,
• masked_value (default: 0) – amplitude value (in ADU) substituted for masked pixels,
• threshold (default: -123456) – threshold; if the default value is not changed - threshold is not applied
• below_thre_value (default: 0) – the amplitude substituted in pixels below threshold,
• bkgd_row_min (default: 0) – the window in image, which is used for background normalization,
• bkgd_row_max (default: 10) – the window in image, which is used for background normalization,
• bkgd_col_min (default: 0) – the window in image, which is used for background normalization,
• bkgd_col_max (default: 10) – the window in image, which is used for background normalization,
• print_bits (default: 0) – verbosity:
  • =0 - print nothing,
  • +1 - input pars,
  • +2 - time stamp for each event,
  • +4 - detailed info about input files for pedestals, mask, background, and gain.

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