GAMOS 5.1.0 User's Guide | ||
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These histograms are related to the event classification explained above. They are produced if the event classification user action is selected. The name of all these histograms starts with "PETEvtClass: " and all are written in the file pet.root/csv.
The following histograms are written:
Classification index of event ("PET classification"). This index is the one described in the precedent section.
Number of 511-keV reconstructed hits before cleaning if there are more than two and searching for Compton hits, i.e., hits produced merging two crystals (see above) ("N 511 recHits initial")
The energy of the 511-keV reconstructed hits ("PET RecHit energy (keV)")
The energy of the 511-keV reconstructed hits that are rejected because there are more than two ("PETEvtClass: Extra PET RecHit energy (keV)")
Distance of closest approach between vertex and the line joining the two 511-keV reconstructed hits (=DCA) ("PET dist line - vertex (mm)")
Z coordinate if distance of closest approach between vertex and the line joining the two 511-keV reconstructed hits (=DCA) ("PET dist line - vertex Z (mm)")
Phi coordinate if distance of closest approach between vertex and the line joining the two 511-keV reconstructed hits (=DCA) ("PET dist line - vertex PHI (mm)")
Radial position in the XY plane of the primary positrons ("e+ position (X,Y) (mm)")
Radial position in the XY plane of the primary positrons, only for those events that are good PET events ("e+ position (X,Y)_PET Events (mm)")
There are also a histogram of the DCA and the reconstructed hit energies for each of the sixteen subclassification types (combinations of the 4 subindices) and also for the all the events that are far from vertex, all the events where there were more than two hits, all the events with random coincidences and all the scttered events.
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PET event classification | Up | PET output for reconstruction |