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Re: Invalid Events in Prespec Code [message #19456 is a reply to message #19455] Fri, 19 August 2016 15:45 Go to previous messageGo to previous message
a_boso is currently offline  a_boso
Messages: 16
Registered: July 2014
occasional visitor
From: 147.162.110*
Hi Michael,

thank you for your fast and precise reply!

I tried to check where the information starts to miss; but it seems it is a common feature of all the variables still from the beginning of the analysis.

For example if I take the processor

processor Frs/Scintillators/dEnergySc21  UTILS.Pair
          first <-  FrsCrate.qdc1[16]
          second <- FrsCrate.qdc1[17]
          display first:second        
          display first               
          display second              

which simply takes the "raw" values from the Frs Crate for Sc21 (but it is the same for Sc41 for example) and plots them I already see that that the "Frs_Scintillators_dEnergySc21__first_valid" variable is 0 90% of the time.

Since FRS scintillators are the "fastest" detectors we have I did not expect to have such a large amount of invalid events in them.
Moreover it seems that these events are invalid already when they come out from the Frs Crate; this is what I don't understand. What does it mean that raw values from the Crate are invalid?

Thank you very much, and sorry for bothering you!! Sad

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