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Update (16 dec 2008) here

Ped deviation monitoring (10/03/2008)

The following plots show the evolution with time of the pedestal deviation for LEX1,HEX1,LEX8 and HEX8 .I use the 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) ( which give the peak of the distribution) and the error bar is the width of the Gaussian sigma
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the time range is more or less 30 days
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we see a clear trend that could explain the trend is FLE and FHE threshold.
h2 updated plots (10/04/2008)
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FLE threshold
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FHE threshold
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LAC pos threshold
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LAC neg threshold

LAC monitoring

• The following plots show the evolution, for POS (top) and NEG (bottom), of the LAC distribution mean value and RMS from the RECONHISTALARMDIST.Lac_Thresholds_FaceNeg_TH1_TowerCalLayerCalColumn_leftmost_edge_TH1 and RECONHISTALARMDIST.Lac_Thresholds_FacePos_TH1_TowerCalLayerCalColumn_leftmost_edge_TH1 plots with the moot key=2419, 2321 and 2417(most recent NomSciOps definition).

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generated with /a/surrey01/vol/vol2/g.USAWork1/berrie/glast/flight/lachist_v2.py
The mean value shows a slight increase with time
When zooming the points, there is a very significant oscillation of very small amplitude with a ~1day period.

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f1 = ROOT.TF1("f1","([2]/pow(x,[3]))/(1+exp(([0]-x)/[4]))+[1]",300,2000)

Results

Location:

sanchez@noric07 $ pwd
/a/sulky36/g.glast.u33/sanchez/flight/CAL_mon/flefhemon
sanchez@noric07 $ ls *eps *dat
	    fhemon.eps	    flemon.dat	flemon_all.eps
fhemon.dat  fhemon_all.eps  flemon.eps

The following plots show the evolution of the fitted parameter [0] as a function of time for both FLE and FHE. This parameter is likely to described the mean FLE (FHE) Wiki MarkupThe following plots show the evolution of the fitted parameter *\[0\]* as a function of time for both FLE and FHE. This parameter is likely to described the mean FLE (FHE) threshold.

• The red cross are the obtained values and the error bars are the errors given by MINUIT
• First plot is the fitted FLE threshold as a function of time and the second plot is the same but for FHE threshold
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• FLE : The mean value is 98 97.5 Mev not 100MeV : due to the method?
• FHE : mean is > 1000 MeV
  We clearly see an oscillation in both plots

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• Check the result with the CALCalib codeMake a cron job and run it daily.