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    User name R. Michaels

    Log entry time 15:08:31 on May15,2008

    Entry number 238112

    keyword=online deadtime modifications

    I remind that the online deadtime calculation in datamon and in
    the halog end-run summary is flawed by the fact that we don't
    know *online* (but do know offline) the number of triggers accepted
    by each trigger type. We only know the DAQ rate online. So I have
    to put in assumptions about the correlations.

    The present assumptions, updated just now, are:

    1. Every T5 is a T1 and a T3.
    2. Every T3 is a T4.
    (but not vice versa, of course)

    Note, every T5 is also a T4 but this is accounted for with #2.

    Offline, of course, the deadtime calculation is very straightforward.