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Feature #22524

Make initial pedestal estimate non-integral

Added by David Adams almost 2 years ago. Updated almost 2 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Start date:
05/07/2019
Due date:
% Done:

0%

Estimated time:
Duration:

Description

I noticed that the pedestals in protoDUNE RawDigits were always integral. My understanding is that the decoder was returning (for each channel) the ADC code where the mean value fell. On my request, Tom modified that code so that it now returns a non-integral value as though the counts in each bin were uniformly spread.

I see the pedestal values in RawDigit are now non-integral.

old-chmet_pedvary_tps0_run007705.png (23.1 KB) old-chmet_pedvary_tps0_run007705.png David Adams, 05/07/2019 10:03 AM
new-chmet_pedvary_tps0_run007705.png (22.8 KB) new-chmet_pedvary_tps0_run007705.png David Adams, 05/07/2019 10:03 AM

History

#1 Updated by David Adams almost 2 years ago

I attach plots showing the event-to-event variation (RMS for 50 events) of the pedestals with the old and new code. There is a decrease in the variation with the new code.

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