This repository describes how to read Tracker RecHit information from the ntuples produced with: https://github.com/cms-legacydata-analyses/TrackerRecHitProducerTool (need pyROOT and matplotlib installed)
xrdcp root://eospublic.cern.ch//eos/opendata/cms/upload/emanuele/step3_QCD600to3000/savehits_output_0001.root .
python3 example.py
A scatter plot of the hits from three events should be displayed.
| Data variable | Type | Description |
|---|---|---|
| hit_global_x | std::vector<float> |
global x position of the RecHit |
| hit_global_y | std::vector<float> |
global y position of the RecHit |
| hit_global_z | std::vector<float> |
global z position of the RecHit |
| hit_local_x | std::vector<float> |
x pos. of the hit in the local sensor coordinate |
| hit_local_y | std::vector<float> |
y pos. of the hit in the local sensor coordinate |
| hit_local_x_error | std::vector<float> |
x error in the local sensor coordinate |
| hit_local_y_error | std::vector<float> |
y error in the local sensor coordinate |
| hit_sub_det | std::vector<unsigned int> |
subdetector generating the hit [1] |
| hit_layer | std::vector<unsigned int> |
layer/disk of the subdetector generating the hit |
| hit_type | std::vector<unsigned int> |
type of sistrip hit [2] |
| hit_simtrack_id | std::vector<int> |
ID number of the sim track matched to the hit |
| hit_simtrack_index | std::vector<unsigned int> |
index of the sim track matched to the hit |
| hit_simtrack_match | std::vector<bool> |
is the hit matched to a sim track? |
| hit_genparticle_id | std::vector<unsigned int> |
index of the gen particle matched to the hit |
| hit_pdgid | std::vector<int> |
PDG ID of the gen particle matched to the hit |
| hit_recotrack_id | std::vector<unsigned int> |
index of the reco track matched to the hit |
| hit_recotrack_match | std::vector<bool> |
is the hit matched to a reco track? |
| hit_genparticle_match | std::vector<bool> |
is the hit matched to a gen particle? |
| hit_genjet_id | std::vector<unsigned int> |
index of the gen jet matched to the hit |
| hit_genjet_match | std::vector<bool> |
is the hit matched to a gen jet? |
| simtrack_id | std::vector<unsigned int> |
ID number of the sim track |
| simtrack_pdgid | std::vector<int> |
PDG ID of the sim track |
| simtrack_charge | std::vector<int> |
charge of the sim track |
| simtrack_px | std::vector<float> |
momentum x component of the sim track |
| simtrack_py | std::vector<float> |
momentum y component of the sim track |
| simtrack_pz | std::vector<float> |
momentum z component of the sim track |
| simtrack_energy | std::vector<float> |
energy of the sim track |
| simtrack_vtxid | std::vector<unsigned int> |
ID number of the sim vertex of the sim track |
| simtrack_genid | std::vector<unsigned int> |
index of the gen particle associated to the track |
| simtrack_evtid | std::vector<uint32_t> |
event ID of the sim track |
| genpart_collid | std::vector<int> |
collision ID of the gen particle |
| genpart_pdgid | std::vector<int> |
PDG ID of the gen particle |
| genpart_charge | std::vector<int> |
charge of the gen particle |
| genpart_px | std::vector<float> |
momentum x component of the gen particle |
| genpart_py | std::vector<float> |
momentum y component of the gen particle |
| genpart_px | std::vector<float> |
momentum z component of the gen particle |
| genpart_energy | std::vector<float> |
energy of the gen particle |
| genpart_status | std::vector<int> |
PDG status of the gen particle |
| genjet_px | std::vector<float> |
momentum x component of the gen jet |
| genjet_py | std::vector<float> |
momentum y component of the gen jet |
| genjet_pz | std::vector<float> |
momentum z component of the gen jet |
| genjet_energy | std::vector<float> |
energy of the gen jet |
| genjet_emEnergy | std::vector<float> |
electromagnetic energy of the gen jet |
| genjet_hadEnergy | std::vector<float> |
hadronic energy of the gen jet |
| genjet_invisibleEnergy | std::vector<float> |
invisible energy of the gen jet |
| genjet_auxiliaryEnergy | std::vector<float> |
auxiliary energy of the gen jet |
| genjet_const_collid | std::vector<std::vector<int> > |
collision ID of the constituent of the gen jet |
| genjet_const_pdgid | std::vector<std::vector<int> > |
PDG ID of the constituent of the gen jet |
| genjet_const_charge | std::vector<std::vector<int> > |
charge of the constituent of the gen jet |
| genjet_const_px | std::vector<std::vector<float> > |
momentum x component of the constituent of the gen jet |
| genjet_const_py | std::vector<std::vector<float> > |
momentum y component of the constituent of the gen jet |
| genjet_const_pz | std::vector<std::vector<float> > |
momentum z component of the constituent of the gen jet |
| genjet_const_energy | std::vector<std::vector<float> > |
energy of the constituent of the gen jet |
| track_chi2 | std::vector<float> |
chi2 of the reco track fit |
| track_ndof | std::vector<float> |
ndof of the reco track fit |
| track_chi2ndof | std::vector<float> |
reduced chi2 of the reco track fit |
| track_charge | std::vector<float> |
charge of the reco track |
| track_momentum | std::vector<float> |
momentum of the reco track |
| track_pt | std::vector<float> |
transverse momentum of the reco track |
| track_pterr | std::vector<float> |
error on the transverse momentum of the reco track |
| track_hitsvalid | std::vector<unsigned int> |
number of valid hits in the reco track |
| track_hitslost | std::vector<unsigned int> |
number of lost hits in the reco track |
| track_theta | std::vector<float> |
theta angle of the reco track |
| track_thetaerr | std::vector<float> |
error on theta of the reco track |
| track_phi | std::vector<float> |
phi angle of the reco track |
| track_phierr | std::vector<float> |
error on phi of the reco track |
| track_eta | std::vector<float> |
pseudorapidity of the reco track |
| track_etaerr | std::vector<float> |
error on pseudorapidity of the reco track |
| track_dxy | std::vector<float> |
transverse impact parameter of the reco track |
| track_dxyerr | std::vector<float> |
error on the transverse impact parameter of the reco track |
| track_dsz | std::vector<float> |
longitudinal impact parameter of the reco track |
| track_dszerr | std::vector<float> |
error on the longitudinal impact parameter of the reco track |
| track_qoverp | std::vector<float> |
charge over momentum of the reco track |
| track_qoverperr | std::vector<float> |
error on charge over momentum of the track |
| track_vx | std::vector<float> |
x position of the vertex of the reco track |
| track_vy | std::vector<float> |
y position of the vertex of the reco track |
| track_vz | std::vector<float> |
z position of the vertex of the reco track |
| track_algo | std::vector<Int_t> |
algorithm type of the reco track |
| track_hit_global_x | std::vector<std::vector<float> > |
global x position of the RecHit associated to the reco track |
| track_hit_global_y | std::vector<std::vector<float> > |
global y position of the RecHit associated to the reco track |
| track_hit_global_z | std::vector<std::vector<float> > |
global z position of the RecHit associated to the reco track |
| track_hit_local_x | std::vector<std::vector<float> > |
local x position of the RecHit associated to the reco track |
| track_hit_local_y | std::vector<std::vector<float> > |
local y position of the RecHit associated to the reco track |
| track_hit_local_x_error | std::vector<std::vector<float> > |
error on local x position of the RecHit associated to the reco track |
| track_hit_local_y_error | std::vector<std::vector<float> > |
error on local y position of the RecHit associated to the reco track |
| track_hit_sub_det | std::vector<std::vector<unsigned int> > |
subdetector generating the hit [1] associated to the reco track |
| track_hit_layer | std::vector<std::vector<unsigned int> > |
layer/disk of the subdetector generating the hit associated to the reco track |
[1] 1 PixelBarrel, 2 PixelEndcap, 3 TIB, 4 TID, 5 TOB, 6 TEC
[2] 0 Pixel hit, 1 rphiRecHit, 2 stereoRecHit, 3 rphiRecHitUnmatched, 4 stereoRecHitUnmatched