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Comment: Add info about EventNumberFilter

...

  1. raw image,
  2. image in the window with amplitudes above the threshold_low
    • few peaks at the edges were discarded by the window limits,
    • image still contains many 1-photon pixels, which need to be eliminated,
  3. smeared image.

Module ImgAlgos::EventNumberFilter

This filter selects events by their number counting from the beginning of job, starting from 0. The event number is not a parameter which is associated with event. Use this filter cautiously on your own risk for debugging purpose only.

Note

The unique parameter associated with the event is a time-stamp. The event number is not defined in the xtc file and is not a recommended to use parameter. The events are counted locally inside this filter from the beginning of job starting from 0. Be cautious of using this filter in consecutive jobs for different runs! For example, this filter returns different subsets of events for the files with raw and selected events.

Module configuration parameters:

  • filterIsOn (default: true) – On/Off filter.
  • first (default: 0) – the first event from the beginning of job, starting from 0.
  • last (default: 1<<31) – the last event from the beginning of job.
  • evtstring (default: "") – the string of events of intervals from the beginning of job.

There are two modes of operation of this filter.

  1. If the first and/or last event numbers are defined, then the filter will select events in this range only.
  2. If the evtstring is defined, only listed events of event ranges will be selected. For example, the evtstring parameter can be defined as
    Code Block
    
 2,5,11-15,20-25,29,30
    that means the list of events:
    Code Block
    
  2  5  11  12  13  14  15  20  21  22  23  24  25  29  30
    In the evtstring parameter the comma "," and sign minus "-" as a dash are the only allowed separators. Blank spaces are also allowed. Other characters may abort the program. The evtstring mode has higher priority than the 1st mode.