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Other option for floating point conversion: -define quantum:format=floating-point

 

Examples for cxi86415

This test is done by request

Note

Loh, Ne-Te writes:

 > On a separate note, the online monitoring software (hummingbird, by Benedikt and Filipe) will need py+psana. However, the default psana calibrations/corrections for the 140k back detector seems wonky. You might recall that there was a teleconference where Veitâ's student (Yi-Tien) discusses how the 0-photon peak had a largish negative ADU, despite turning on common mode correction and dark subtraction (psana's implementation). Would you and your team be able to take a look at these as well? If  it's a quick fix, then the online monitoring group will have a much easier time (e.g. they won't have to separately do common mode subtraction).

Standard configuration file

Use psana configuration file psana-cxidg3-cspad2x2-NDArrAverage.cfg (download), which can be executed by command:

Code Block
sit_setup
psana -c psana-cxidg3-cspad2x2-NDArrAverage.cfg exp=cxi86415:run=7

This job produces 3 files with cspad2x2 shaped arrays for averaged, rms, and maximal intensities.

These arrays can be plotted by the command

Code Block
plims cspad2x2-ndarr-ave-cxi86415-r0007.dat

Results for runs 7, 62, and 83 are shown on plots:

Image Added Image AddedImage Added

These plots show that the dark level is consistent with zero and does not indicate on any offset.

 

Loh's configuration file

Use configuration file from Loh's e-mail orig.cfg (download)

with minor modifications

  • add psana parameters in the header, add list of modules
  • remove typeGroupname = CsPad:CalibV1 from 
    [CSPadPixCoords.CSPad2x2ImageProducer:2]
  • add module ImgAlgos.ImgSaveInFile:2 just in order to save image:
Code Block
[psana]
files = exp=cxi86415:run=64
events = 10

modules = CSPadPixCoords.CSPad2x2NDArrProducer:2 \
          ImgAlgos.NDArrCalib:2 \
          CSPadPixCoords.CSPad2x2ImageProducer:2 \
          ImgAlgos.ImgSaveInFile:2

<code from e-mail is here>

[ImgAlgos.ImgSaveInFile:2]
source         = DetInfo(CxiDg3.0:Cspad2x2.0)
key            = reconstructed
fname          = img-cspad2x2-dg3
ftype          = txt
#saveAll        = true
print_bits     = 3
eventSave      = 9

Run it with command:

Code Block
psana -c orig.cfg

which produces file with image for event #9, which can be viewed as

Code Block
plims img-cspad2x2-dg3-cxi86415-r0064-e00000009-20150308-162942.145136207.txt

ang brings us an image: Image AddedImage Added - the same image, but spectrum is shown in the range (-100, 100) ADU. This event looks good.

Event #36: Image Addedlooks like left-side sensor is not corrected for common mode fluctuation...

In stead of default common_mode parameters (1,25,25,100) let us try (1,50,10,100) in the file

Code Block
/reg/d/psdm/CXI/cxi86415/calib/CsPad2x2::CalibV1/CxiDg3.0:Cspad2x2.0/common_mode/9-end.data

The same image looks better now: Image Added

Recommendation: try to play with common mode parameters.

 

References

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