CDC Pedestal Studies

Pedestal Subtraction

Based on cosmic ray data with BCAL trigger Look for events with the following signature in the CDC:

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The first test was done by using the region $P_{{i}}$ (blue) to determine a pedestal and the region I (red) to determine an Integral and then subtract the proper pedestal from the Intergral as follows: $D=I-P_{{i}}/N_{{i}}*80.$ where $N_{{i}}$ is the number of samples used to calculate the pedestal and 80 is the number of samples in the Integral I. In the case of no signal the the distribution D is expected to be around zero with a sigma that reflects the resolution and depends on the number samples $N_{{i}}$ used in determining the pedestal.