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The following plots show the evolution with time of the pedestal deviation for LEX1,HEX1,LEX8 and HEX8 .I retrieve use the mean and the rms of the distribution of CALPEDSANALYZER : root file CALPEDSANALYZER and canvas CalXAdcPedPedMeanDeviation_LEX1_TH1 ( LEX1,HEX1,LEX8 and HEX8).
I put the data into a histogram and fit with a Gaussian (see plot). The reported value is the mean of the gaussian (with 3 parameters, N ,mu, sigma) ( with give the peak of the distribution) and the errors bar is sigma
the time range is more or less 30 days
we see a clear trend that could explain the trend is FLE and FHE threshold.
h2 updated plots (10/04/2008)
FLE threshold
FHE threshold
LAC pos threshold
LAC neg threshold
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