Missing LAr instrumentation parameters

[theHenks]

Rosannas suggestions for LAr evt tier:

• PE sum in window around t0 from [t0 -1µs, t0 +5µs]
• SiPM Multiplicity in window for PE > vals from Rosanna
• t0sipm := first hit within [t0 -1µs, t0 +5µs] with special selection coming from Rosanna
• ETC classifier: sum(pe) in [t0sipm, t0sipm + 80ns]/sum(pe) in [t0sipm -1µs, t0sipm +5µs] + special condition for e_max
• Delta t = t0 - t0sipm
• Add lar_veto flag

@rosannadeckert comes up with missing information

Maybe some QC cuts for other parameters

[theHenks]

@rosannadeckert Could you provide the special selections for the t0sipm and the e_max condition for the ETC classifier? I have already some example code for all these parameters, this would be the last part I am missing.