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    User name paschke

    Log entry time 14:28:32 on August 23, 2009

    Entry number 285468

    This entry is a followup to: 285440


    keyword=more on trigger cuts in analyzing spectrometer data

    It seems that the D.evtypebits are not set correctly for the left arm. (This would be easy to understand if there is a different name for the corresponding data word on the left arm... but I have no idea if that is the case or not.)

    Here is how I cut on event type:

    for the Right HRS: (D.evtypebits & 0x4) == 0x4 (careful with association: logical operators act BEFORE bitwise operators)

    for the Left HRS: fEvtHdr.fEvtType==2

    I believe that there is an equivalent fEvtHdr.fEvtType cut that is appropriate for the right arm, but I don't really understand which is better (evtypebits, or fEvtType). Possibly the fEvtType bit would be less inclined to trigger distortion (as seen in halog 285447)?