ACD veto scan trending

The calibGenAcd/runVetoCalib.exe script extracts veto set points. This is done by comparing the PHA values for all events (black curve) to the PHA values for only those events with veto signals (blue curve) and finding the 50% point (red line).

A veto scan consists of taking data at several veto set points and then fitting the 50% points against the set points. We extract two parameters from a veto scan.

• Slope: The veto_dac setting / pha 50% point relationship
• Offset: The veto_dac setting that would be needed be equivalent firing at PHA of 0.

The test points here are the "veto" tests list in the full list of muon run blocks

Comments:

• There is one channel where the fits fail badly
  In that channel the veto can not be set below about 0.45 mip
  

Plot of values	Comments	Plot of diff W.R.T. reference
	Slope of setting (in veto_dac) / set point (in PHA). Range: Most channels -0.35 - -0.25.
	Offset of veto_dac. Range: Most channels 65-70.