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 Example for Module ImgAlgos::AcqirisCFD

Module ImgAlgos::NDArrAverage

This module averages over events the per-element data of the image array (ndarray<T,NDim>, where T is implemented for almost all types: int, int16, uint, float, double etc., NDim≤5) and saves files for sum, averaged, rms values, mask, and, the hot pixel map. Input ndarray can be specified by the source and key parameters. Averaging may have up to three stages, depending on configuration parameters:

  • 0-stage: the pixel amplitudes are averaged without any constrains for events from 0 to evts_stage1, the preliminary averaged and rms values are defined for each pixel at the end of this stage.
  • 1-stage: starting from event evts_stage1 the pixel data are collected only for abs(amplitude-average0) < gate_width1. At the end of this stage the preliminary averaged and rms values are defined for each pixel.
  • 2-stage: starting from the event evts_stage1 + evts_stage2 the pixel data are collected only for abs(amplitude-average1) < gate_width2. At the end of this stage the preliminary averaged and rms values are defined for each pixel and saved in the files specified by the avefile and rmsfile parameters, respectively.
    This 3-stage averaging algorithm eliminates large statistical fluctuations in the pixel amplitude spectrum.

parameter

default value

description

source

"DetInfo(:Opal1000")

input source of data

key

 

key for input data, for example, it might be "calibrated"

sumfile

""

out file with sum of amplitudes, saved if the name is not empty

avefile

""

out file with averaged amplitudes, saved if the name is not empty

rmsfile

""

out file with rms, saved if the name is not empty

maskfile""out file with pixel mask with 0/1-for bad/good pixels, saved if the name is not empty

hotpixfile

""

out file with hot pixel mask with 0-for good/hot or dead pixels, saved if the name is not empty

thr_rms_ADU

"10000."

threshold on rms (in ADU); if rms exceeds this threshold - pixel is hot

thr_min_ADU

"-100000."

threshold on minimal intensity (in ADU); if ave exceeds this threshold - pixel is good

thr_max_ADU

"100000."

threshold on maximal intensity (in ADU); if ave exceeds this threshold - pixel is bad

evts_stage1

1000000

number of events before stage 1

evts_stage2

0

additional number of events before stage 2

gate_width1

0

gate_width for stage 1

gate_width2

0

gate_width for stage 2

print_bits

0

module verbosity:

  • =0 - print nothing
  • +1 - input pars
  • +2 - event record
  • +4 - beginning of 3 stages
  • +8 - processed statistics at the end of each stage
  • +16 - records for saved files
  • +32 - summary with keywords for parser

If all file names are empty (by default), the files with pre-defined names "arr-ave-<exp>-r<run>.dat" and "arr-rms-<exp>-r<run>.dat" will be saved for averaged and rms arrays, respectively. Otherwise, the files with specified names will be saved.
Default parameters are set for regular single-stage averaging without any constrains.
See also Example for Module ImgAlgos::NDArrAverage.

Module ImgAlgos::ImgAverage

This module averages over events the per-pixel data of the image array (ndarray<double,2>) and saves files for averaged, rms values, and, if requested, the hot pixel mask. Input data can be specified by the source and key parameters. Averaging may have up to three stages, depending on configuration parameters:

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