CAL Trending
In this page a trending study of the LAT Calorimeter is presented.
- For the period between 09.01.2006 and 03.27.2008, a total of 362 LAT-22x runs were examined.
- Run 077012890 taken on 11.13.2006 was adopted as a reference run. This run was taken at room temerature.
Plots
For this analysis, two sets of plots were generated:
- For each run, the distribution of Muon pedestal widths were plotted as a time series on a 2D histogram. Plots with "Distribution of Pedestal Widths:" show such plots.
- For each run, the distriution of Muon pedestals for that run were compared to those of the reference run. The resulting 361 historgams were drown as a time series in a 2D histogram. Plots with "Distribution of Pedestal Differnces: " show such plots.
These histograms were created for the four different energy ranges, LEX8,LEX1,HEX8, and HEX1. In all of the histograms, the value on the x-axis represents the consequential number of the runs. A full list of Muon Pedestal run numbers used in this analysis, the corresponding bin number on the histograms, and the modified Julian date for each run, are given in this table. Notice that the reference run occupies the 251 bin in all the following plots hence the gap in that bin for the "Differences" plots.
Example plots
Plot of Pedestal widths |
Plot of diff W.R.T. reference |
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