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Pietrini A, Nettelblad C
J Synchrotron Radiat 24 (Pt 5) 1092-1097 [2017-09-01; online 2017-08-22]
The existence of noise and column-wise artifacts in the CSPAD-140K detector and in a module of the CSPAD-2.3M large camera, respectively, is reported for the L730 and L867 experiments performed at the CXI Instrument at the Linac Coherent Light Source (LCLS), in low-flux and low signal-to-noise ratio regime. Possible remedies are discussed and an additional step in the preprocessing of data is introduced, which consists of performing a median subtraction along the columns of the detector modules. Thus, we reduce the overall variation in the photon count distribution, lowering the mean false-positive photon detection rate by about 4% (from 5.57 × 10
PubMed 28862634
DOI 10.1107/S160057751701058X
Crossref 10.1107/S160057751701058X
pii: S160057751701058X