Getting Started with xAODs

This uses xAODAnaHelpers as a base class.

Logon to the Tier3. Make a working directory. Go there. Need to setup some software called ROOTCore. This is only needed once, you can set this up with:

rcSetup Base,2.0.23

Download the relevant packages

svn co svn+ssh:// xAODAnaHelpers
svn co svn+ssh://  XhhExample

Configure RootCore

rc find_packages
rc compile

And run with: runXhh

(One annoying thing is that if you want to run again you have to remove the output directory that was created by the first job first, or else you will get a crash.)

Other commands that ive sometimes used: rc compile_pkg XhhExample rc clean rc [tab complete]

Tutorials: SoftwareTutorialxAODAnalysisInROOT

To set up Fax (Needed when the files are on the grid):

voms-proxy-init -voms atlas

Using iPlot



Using pyAMI

pyAMI is a client for AMI written in python.

On lxplus:

Setup AMI: source /afs/ Authenicate voms-proxy-init -voms atlas Search eg: ami list datasets mc14_13%

Slides From ATLAS weekly The official pyAMI documentation here

Xhh Samples

(Requested these be transferred to UC)


Using Rates Estimator

log onto lxplus cd /afs/

RateEstimator info:


Test Derivations

Samples located at /share/t3data3/johnda/samples

Run Derivation: asetup AtlasDerivation,,here --inputAODFile inputXAOD.pool.root --outputDAODFile output.pool.root --reductionConf EXOT1

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Topic revision: r16 - 2015-04-12 - JohnAlison
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