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cms-l1t-offline / cmssw

CMS Offline Software
cms-sw.github.io/cmssw
Apache License 2.0
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Add (unprescaled) L1_FirstBunchInTrain bit in central NANOAOD #1100

Open lathomas opened 1 year ago

lathomas commented 1 year ago

Hello, Having in NANOAOD the (unprescaled) L1 bit decision corresponding to whether an event is in the first colliding bunch of a train (L1_FirstBunchInTrain) would be very useful for prefiring studies. Currently only the decision after prescale is saved (which is useless). It would be great if someone could volunteer to do that. Thanks ! Laurent

lathomas commented 1 year ago

Update: The right boolean we want is the post prescale decision of L1_FirstBunchBeforeTrain in bx-1. Here's how to access that info: https://github.com/iihe-cms-sw/GenericTreeProducerMINIAOD/blob/main/Ntuplizer/plugins/Ntuplizer.cc#L1057 The bit index can be found using https://github.com/iihe-cms-sw/GenericTreeProducerMINIAOD/blob/main/Ntuplizer/plugins/Ntuplizer.cc#L1018C13-L1018C13