NIKHEF PAT workshop Oct2006

Pre-Tutorial

• This pre-Tutorial is copy of the one given by Ketevi A. Assamagan, adapted to work in 12.0.2

• here is a link to other Tutorials by Ketevi, and other usful PAT links:

PAT

• Please follow the following pre-Tutorial before the date of the Workshop. It is a very straight forward, tutorial and will help to set up the athena enviroment for the workshop, so we can focus our time in more interested things

Pre-Tutorial link

During the workshop we'll browse over the code that we've used in the pre-Tutorial to try and uderstand it. Later we'll focused on the TAG and AAN selection.

Event Selection

First we're going to generate a new AAN that we'll use later for selection.

cd ~scratch0/Workshop/
source setup.sh -tag=12.0.2,opt
cd 12.0.2/PhysicsAnalysis/AnalysisCommon/UserAnalysis
cp ~ordonez/public/Workshop_files/src/AnalysisSkeleton.cxx src/.
cp ~ordonez/public/Workshop_files/UserAnalysis/AnalysisSkeleton.h UserAnalysis/.
cd cmt
gmake
cd ..
mkdir run2
cd run2
cp ~ordonez/public/Workshop_files/run2/AnalysisSkeleton_jobOptions.py .
cp ~ordonez/public/Workshop_files/data2/PoolFileCatalog.xml .
cp ~ordonez/public/Workshop_files/data2/mc11.004202.ZmumuJimmy.recon.AOD.v11000401.py .
athena AnalysisSkeleton_jobOptions.py | tee athenaOut_AnalysisSkeleton.log

This will generate the file AnalysisSkeleton.aan.root.

Event Selection using TAG

• First we generate our own TAG.

• Still in the new run2 directory:

cp ~ordonez/public/Workshop_files/run2/Main_topOptions.py .

• Edit Main_topOptions.py and uncomment the line

### Create TAG file
doWriteTAG=True

athena Main_topOptions.py | tee athenaOut.log

• This will generate the file called ZmumuOnAOD_TAG.root

• Now we are ready to run our algorithms with a TAG selection on the fly. Edit Main_topOptions.py again comment out:

#doWriteTAG=True 

• and uncomment

doRunAODwithSelection=True

and

useTag=True

• Copy:

cp ~ordonez/public/Workshop_files/run2/ZmumuOnAOD_new_jobOptions.py .

• And run again. Note that only will run the events that satisfy the query:

EventSelector.Query = "NLooseMuon>0 && NLooseMuon<3 && abs(LooseMuonEta1)<2.5 && abs(LooseMuonEta2)<2.5 && LooseMuonPt1>10000 && LooseMuonPt2>10000"

athena Main_topOptions.py | tee athenaOut.log

• As an output you have ZmumuOnAOD_withTAGSelection.aan.root. You can have a look at it in root to make sure that the query has been satisfied

• Now we'll rewrite our own AOD containeing only the events selected. We'll do it for only 50 events to gain some time

• Edit again Main_topOptions.py and change:

TheApp.EvtMax = 500

to

TheApp.EvtMax = 50

• Comment out

#doRunAODwithSelection=True

• uncomment:

doRewriteAOD=True

and run once more

athena Main_topOptions.py | tee athenaOut.log

You'll see a new Zmumu_new_AOD_withTAGSelection.root file has been created

Event Selection using AAN

• Follow as in the previous section but useANN=True instead of useTAG=True. In the end you should have the following two files:

ZmumuOnAOD_withAANSelection.aan.root Zmumu_new_AOD_withAANSelection.root

Interactive Analysis in ATHENA

• In this exercise, we will see how to do interactive analysis in ATHENA, how to browse the Raw Data in the AOD. Proceed as follows:

get_files Interactive_topO.py

• Edit Interactive_topO.py and replace this line

EventSelector.InputCollections = [ "AOD.pool.root" ]

• with this line:

include ( "mc11.004202.ZmumuJimmy.recon.AOD.v11000401.py" )

• run

athena -i Interactive_topO.py

• Initialize application manager

athena>theApp.initialize()

• Run 1 event

athena>theApp.nextEvent()

• Retrieve Muons from AOD

athena>mcon = PyParticleTools.getMuons("MuidMuonCollection")

• Other methods are defined in PyParticleTools

• Get the first muon

athena>m = mcon[0]

• Get a list of methods

athena>dir(m)

• See pT

athena>m.pt()

• Get TrackParticle via ElementLink

athena>tp = m.track()
athena>dir(tp)
athena>tp.pt()

• Retrieve the MC Truth

athena>mcc = PyTruthTools.getMcEvents("TruthEvent")
athena>mc = mcc[0]
athena>mc.alphaQCD()

• Dump Data Store

athena>dumpSG()

• Run next event

athena>theApp.nextEvent()

Rewind event counter

athena>theApp.seek(0)

• See pT distribution of muons

athena> plot("MuonContainer#MuidMuonCollection","$x.pt()",nEvent=5)

Analysis with the EventView

• Due to the time I won't cover this section during the Workshop. But now you should have the basic knowledge requiered to understand it. You can learn about the Event View here

Analysis on the GRID

• In the following examples we'll run on Zmumu datasets.
• This will be a brief introduction to GRID tools for those of you who already went through the trouble of getting a GRID certificate.

• First we should set up DQ2 tools:

source /afs/usatlas.bnl.gov/Grid/Don-Quijote/dq2_user_client/setup.csh.CERN

PANDA/PATHENA

• For further details visit panda wiki
• Setup PATHENA :

cd ~/scratch0/Workshop/12.0.2/PhysicsAnalysis/AnalysisCommon/UserAnalysis
cvs update -r UserAnalysis-00-08-13 -A python
cvs update -r UserAnalysis-00-08-13 -A share/pathena
cvs update -r UserAnalysis-00-08-13 -A share/pathena_util
cvs update -r UserAnalysis-00-08-13 -A share/ConfigExtractor.py
cd cmt
source setup.sh
gmake
cd ../run

• run pathena

Note: change user.GustavoOrdonezSanz.00008.AAN.root with an appropiate name!!

pathena ZmumuOnAOD_jobOptions.py --inDS 'csc11.005145.PythiaZmumu.recon.AOD.v11004103' --outDS \
'user.GustavoOrdonezSanz.00008.AAN.root'

• For job status monitoring visit: Monitoring

DQ2 Tools

• For furhter details visit DQ2 wiki
• This tools make your life easier when working on the GRID

dq2_ls *Zmumu*AOD*

• Have a look at the files contained in one of the sets

dq2_ls -f <datasetname>

• change user.GustavoOrdonezSanz.00008.AAN.root for your own

dq2_get -rv -d . user.GustavoOrdonezSanz.00008.AAN.root

Ganga

We're not going to cover Ganga in this tutorial. But for reference look at:Ganga link

Final Exercice

To conclude the workshop we're going to try to make our own Higgs to four muon analysis. Taking as an example the ZmumuOnAOD algorithm, make a H4mu one. The purpose of this, is to dig into the Phisics Analysis Tools used in ZmumuOnAOD, and try to have a realistic approach of how is like to make Analyis in Athena.

Good luck!