jet validation of fast simulation
DESCRIPTION
Jet Validation of Fast simulation. Kittikul Kovitanggoon *, Chiyoung Jeog, Sung-Won Lee Texas Tech University. 1. Jet Collections with Algorithms. Icone5 Calo Jets Icone5 Pflow Kt4 Calo Jets Kt6 Calo Jets AntiKt5 Calo Jets AntiKt5 JPT AntiKt5 PFlow AntiKt7 Calo Jets. 2. - PowerPoint PPT PresentationTRANSCRIPT
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Jet Validationof
Fast simulation
Kittikul Kovitanggoon*, Chiyoung Jeog, Sung-Won LeeTexas Tech University
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Jet Collections with Algorithms
• Icone5 Calo Jets• Icone5 Pflow• Kt4 Calo Jets• Kt6 Calo Jets• AntiKt5 Calo Jets• AntiKt5 JPT• AntiKt5 PFlow• AntiKt7 Calo Jets
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Validation Procedures• After the MC RelVals for new version of CMSSW are
released and posted on HN.• We pick up the jet datasets like QCD and TTbar to be
run on our validation module.• We compare the histograms between new version
and previous version.• If no discrepancy is indicated, we report this version
pass.• If discrepancy is indicated, we ask the experts what
causes this discrepancy.• The validation result can be found at
http://highenergy.phys.ttu.edu/~keng/validation
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Status and Update• Status of moving to central DQM
- Jet validation module was tested with DQM sequence.
• Update new features - Reduced the bin size and remove unnecessary
plots.
- pT scale Vs Phi - pT response
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Histograms Jet pT scale Vs Phi
The black dot histogram is for new release.Red line filled histogram is for reference.
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Histograms pT respones
The black dot histogram is for new release.Red line filled histogram is for reference.
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pT Response = Corrected pT/Gen pT
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Jet Validation in Spring 2011CMSSW Release Validation status
4_2_0_pre7 PassImproper HO status in DB
3_9_9_64bit wrt 32 bit Pass
3_9_9_64bit Pass
3_11_2 Pass
3_11_3 Pass
4_1_2 Pass
4_2_0_pre8 PassJet pt scale changes
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Jet Validation in Spring 2011CMSSW Release Validation status
Detector failure studies Reported to experts
4_2_0 Pass4_1_3 Pass4_2_1 Pass
The global tag need to be updated
inTime PU only and OOT PU Reported to experts
4_1_4 PassJEC closure improvement
4_1_5 Pass
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4_2_0_ pre7
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• In this release: Had energy missing in fullsim and changing in fastsim
• Improper HO status in DB, which prevents HO from being properly used in MC CaloTowers (fix already submitted to the next pre-release GloblTag).
FullSim FastSim
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4_2_0_ pre8
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• In this release: Jet pt scale in 1.3<|eta|<3.0 changes in fastsim
• The change is for better agreement with FullSim than 420pre7
wrt 4_2_0 pre7 wrt full
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4_2_1
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• In this release: the recent global tag picks the old JEC
• Waiting for the new global tag for 42X and above
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4_1_4
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• In this release: Discrepancies are found in the JEC (both pT ratio and pT response)
• This is the JEC closure improvement. The new JEC is applied.
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JetMET Data validationWe currently look at DQM plots created centrally and posted on DQM GUI
• This validation using RelVal_run2010B dataset (previous valskim) for this validation• We do this validation for every new CMSSW version after MC RelVal validation
The black line histogram is for new release.The filled histogram is for reference.
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JetMET Data validation
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CMSSW Release Validation status
3_11_3 Pass
4_2_0 Pass
4_2_1 Pass
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Conclusion and Plans
• Jet Validation is moving smoothly.• We have the JEC checked in DQM.• Waiting for the new global tags for 42X and
above with the proper JEC.• The new tag for validation module will be
submitted to CVS.
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Back up
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Jet Collections
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Types Histograms
General parameters of jets
Energy, Momentum, and pT
Mass
Eta and Phi
Number of Calo towers
pT scale wrt eta
pT scale wrt pT
pT
pT ratio wrt eta
pT ratio wrt pT
EB and EE
HF
EM energy fraction of jets
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Histograms to Validate
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Types Histograms
HAD Energy HB and HE
HO and HF
HAD energy fraction of jets
Long
Short
Leading jet energy, pT, eta, and phi
Had and EM timing
pT, pThat, Eta, and Phi
Leading jet Eta and Phi
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Histograms to Validate