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duartej / postproc-alibava

Utilities for post-processing data obtained with the ALIBAVA DAQ system.
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[StripCluster] Check and correct if needed the cluser noise calculation #20

Closed duartej closed 6 years ago

duartej commented 6 years ago

Check method at https://github.com/duartej/postproc-alibava/blob/master/src/StripCluster.cxx#L73 to calculate the noise of a cluster. It should be added in quadrature, so far is not. Check the counter part from Eutelescope (as probably the StripClusters' algorithm is highly inspired from there https://github.com/eutelescope/eutelescope/blob/master/processors/src/alibava/AlibavaCluster.cc#L153)

duartej commented 6 years ago

Confirmed that the cluster signal-to-noise was wrongly calculated (just adding the channel noise), instead of evaluating the SNR as Sum_{i=cluster pixels} q_i/noise_i , which is the correct way.