The AcdPedestal script measure the pedestal by taking random triggers with the HV off.
We keep track of the following values.
Mean: the mean pha value from 100 random triggers
RMS: the rms of the pha values from 100 random triggers
Note that the gains are set such that a MIP is about 400 pha counts above pedestal, and that the
zero-suppression is set to 15 pha counts above pedestal.
The test points here are the "LPT" tests list in the full list of ACD test phases
The pedestals show quite a bit of temperature dependence. This has been quantified. Link to follow.
The increase in RMS in phase 17 is b/c the HV bias was on in that test by mistake