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Sequence of modules for raw image averaging

  •           ImgAlgos.PnccdImageProducer - get Psana::PNCCD::FullFrameV1, put  ndarray<const uint16_t, 2>
  •           ImgAlgos.NDArrAverage            - averages ndarray<const T, 2>, save in file

Sequence of modules for calibrated image or ndarray averaging

  •           ImgAlgos.PnccdNDArrProducer - get Psana::PNCCD::FramesV1,     put  ndarray<const T, 3>

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  •           ImgAlgos.NDArrCalib - getinput (raw) ndarray<const T, Ndim>, put  calibrated ndarray<const T, Ndim>
  •           ImgAlgos.PnccdImageProducer - get ndarray<const T,3>, put  ndarray<const T, 2>
  •           ImgAlgos.NDArrAverage            - averages ndarray<const T, 2> or ndarray<const T,3>, save in file

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Common mode correction in pnCCD ndarray

pnCCD image has intensity "strips" in both dimensions;

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This proves that common mode should be evaluated for horizontal stripes.

Due to specifics of pnCCD DAQ readout, it is recommended to evaluate common mode for consecutive groups of 128 pixel in the  [4][512][512] array.

 

Data corrections in module ImgAlgos.NDArrCalib

Midule Module description: Module ImgAlgos::NDArrCalib 

List of parameters in configuration file

Code Block
[ImgAlgos.NDArrCalib]
source = DetInfo(Camp.0:pnCCD.0)
key_in = pnccd-ndarr  
key_out = calibrated  
do_peds = yes 
do_cmod = no 
do_stat = no 
do_mask = no 
do_bkgd = no 
do_gain = no  
do_nrms = no 
do_thre = yes 
fname_bkgd =  
fname_mask =
masked_value = 0
threshold_nrms = 0  
threshold = 100.0  
below_thre_value = 50
bkgd_ind_min = 0
bkgd_ind_max = 1000
bkgd_ind_inc = 2
print_bits = 11

 

 

2014-02-10 Test of the module ImgAlgos.NDArrCalib

Dark run: exp=amoa1214:run=7, all plots are shown for Camp.0:pnCCD.0 event 5

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Set bad pixels (1) in the half of frame[1]:

 

Mask

Region of interest (ROI) mask can be generated by the Mask Editor.

do_mask = yes

fname_mask = pnccd-test-mask.txt

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