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- Peak finder parameters need to be optimized!
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Optimization of peak parameters in Arc region
Selection parameters
Selection of peaks and events is defined in few stages, as listed below.
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So far original Selection 1 looks optimal.
Searching for peaks in Whiskers region
Parameters
Set in psana.cfg file peak selection parameters pretty much the same as in Arc region
| Code Block |
|---|
[ImgAlgos.NDArrDropletFinder:Whi] source = DetInfo(CxiDs2.0:Cspad.0) key = nda_clb key_droplets = nda_droplets_whi key_smeared = nda_sme_whi threshold_low = 10 threshold_high = 150 sigma = 0 smear_radius = 3 peak_radius = 3 low_value = 0. mask = work/roi_mask_nda_whi.txt masked_value = 0 windows = 1 0 185 0 388 \ 17 0 185 0 388 |
save peaks in file without additional selector.
Events
Event 03: 
- normal, single hit event
Event 07: 
- multi-hit event
Event 37: 
- multi-hit event
Distributions for peak parameters without selection
Left plot - peak phi<0, right plot for phi>0
Number of peaks
Peak azimuth angle
Peak radius
Distributions for >1-peak event in each region
References
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Overview
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