Fix bug in defining bin edges of TH2F plots in ECAL DQM [13_2_X]

[abhih1]

PR description:

This PR fixes a bug that crept in PR #42188 in here [1] which was giving nonphysical values to the bin edges of certain TH2F plots like [2] [3] in the Ecal DQM, due to which they were not being filled correctly ever since central DQM switched to CMSSW_13_2_2 from CMSSW_13_0_10.

[1] https://github.com/cms-sw/cmssw/pull/42188/files#diff-93b875a059a27e639d23a1e774ccb058f70fabea027504f8dbb22157c6080632L175-R176
[2] https://tinyurl.com/4nrwk9m7
[3] https://tinyurl.com/jkrvbw37

PR validation:

PR is validated by running the ECAL online DQM configuration and verifying the plots are correct on a test DQM GUI.
Also tested with Ecal runTheMatrix workflow 136.874.

If this PR is a backport please specify the original PR and why you need to backport that PR. If this PR will be backported please specify to which release cycle the backport is meant for:

This is the backport to 13_2_X, currently used in production is here. Master PR is here: #42857

[cmsbuild]

A new Pull Request was created by @abhih1 (Abhirami Harilal) for CMSSW_13_2_X.

It involves the following packages:

• DQM/EcalCommon (dqm)

@nothingface0, @emanueleusai, @cmsbuild, @pmandrik, @syuvivida, @tjavaid, @micsucmed, @rvenditti can you please review it and eventually sign? Thanks.
@rchatter, @argiro, @thomreis, @wang0jin this is something you requested to watch as well.
@rappoccio, @antoniovilela, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

[syuvivida]

Tested and deployed at DQM p5 machines.

[syuvivida]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_13_2_X IBs after it passes the integration tests and once validation in the development release cycle CMSSW_13_3_X is complete. This pull request will now be reviewed by the release team before it's merged. @rappoccio, @antoniovilela, @sextonkennedy (and backports should be raised in the release meeting by the corresponding L2)

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8f99a2/34913/summary.html
COMMIT: 766f0ca
CMSSW: CMSSW_13_2_X_2023-09-26-1100/el8_amd64_gcc11
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/42858/34913/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially removed 3 lines from the logs
• Reco comparison results: 8 differences found in the comparisons
• DQMHistoTests: Total files compared: 48
• DQMHistoTests: Total histograms compared: 3198243
• DQMHistoTests: Total failures: 3
• DQMHistoTests: Total nulls: 1743
• DQMHistoTests: Total successes: 3196475
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 47 files compared)
• Checked 207 log files, 159 edm output root files, 48 DQM output files
• TriggerResults: no differences found

[rappoccio]

+1