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Re: LCIO::EVENT::TrackerHit quality information [message #1917 is a reply to message #1916] Wed, 03 March 2010 12:17 Go to previous messageGo to previous message
killenberg
Messages: 125
Registered: July 2005
Location: CERN
Hello Christoph,

your proposal looks good, but I have some comments:
  • contains a dead pad = bit 0: contains at least one broken channel

  • contains an overflow pulse
  • contains a pulse that has been split
  • contains a pulse with strange shape

These three obsolete bit 1: at least one pulse contributing to the hit is not OK. Or do you have anything else that could be wrong with a pulse?

  • is at the edge/border = bit 2: hit at the border of the pad plane.


I also have some missing items:
  • channel is noisy
  • contains non-dead channel without pulse
  • is multi hit candidate (for instance contains local minimum in charge distribution, or bit is set by topological hit/track finder, which is planned when track candidates are split)

Should we reserve a sequence of bits to store the number of possible hits that contributed?

With this the new proposal looks like:
  • bit 0: contains at least one broken channel (dead)
  • bit 1: contains at least one noisy channel
  • bit 2: hit at the border of the pad plane.
  • bit 3: contains an overflow pulse
  • bit 4: contains a pulse that has been split
  • bit 5: contains a pulse with strange shape
  • bit 6: contains non-dead channel without pulse
  • bit 7: is multi hit candidate
  • bit 8 - 19: not used for the time being.
  • bit 20 - 30: reserved for private usage.
  • bit 31: not used for the time being


Cheers
Martin


Martin Killenberg

CERN
martin.killenberg@cern.ch
 
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