ECAL - Roll back to ECAL ratio timing for Run 3

[thomreis]

PR description:

Due to issues observed with the ECAL ratio timing at high pT [1] we are rolling back to the ratio timing algorithm.
To achieve this the run3_ecal modifier which used to activate the CC timing algorithm in Run 3 was replaced with a new modifierecal_cctiming that explicitly activates the algorithm. The new modifier is not used in the run 3 era though and so the default ratio timing algorithm is used in Run 3 reconstruction.

The change can run out of the box with the current prompt and express GTs but for better handling a new prompt tag with the calibrations and a new express tag with the offsets for ratio timing will be prepared to replace the HLT tags in the GTs.

[1] https://indico.cern.ch/event/1424192/contributions/5990405/attachments/2872238/5028943/ecal_cctiming_ppd_20240606.pdf

PR validation:

No syntax errors in python configuration. Code compiles.

[cmsbuild]

cms-bot internal usage

[thomreis]

type ecal

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-45155/40499

• This PR adds an extra 24KB to repository

[cmsbuild]

A new Pull Request was created by @thomreis for master.

It involves the following packages:

• Configuration/ProcessModifiers (operations)
• RecoLocalCalo/EcalRecProducers (reconstruction)

@antoniovilela, @davidlange6, @rappoccio, @fabiocos, @mandrenguyen, @cmsbuild, @jfernan2 can you please review it and eventually sign? Thanks.
@apsallid, @argiro, @fabiocos, @ReyerBand, @youyingli, @wang0jin, @thomreis, @Martin-Grunewald, @missirol, @makortel, @rchatter this is something you requested to watch as well.
@antoniovilela, @rappoccio, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

[thomreis]

please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7285f5/39754/summary.html
COMMIT: 67691a2
CMSSW: CMSSW_14_1_X_2024-06-06-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/45155/39754/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially added 1 lines to the logs
• Reco comparison results: 5762 differences found in the comparisons
• DQMHistoTests: Total files compared: 48
• DQMHistoTests: Total histograms compared: 3338974
• DQMHistoTests: Total failures: 4348
• DQMHistoTests: Total nulls: 20
• DQMHistoTests: Total successes: 3334586
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.008 KiB( 47 files compared)
• DQMHistoSizes: changed ( 140.043 ): 0.012 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 140.063 ): -0.020 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 141.044 ): 0.016 KiB JetMET/SUSYDQM
• Checked 202 log files, 165 edm output root files, 48 DQM output files
• TriggerResults: found differences in 2 / 46 workflows

[malbouis]

urgent

• please see this comment.

[mandrenguyen]

+reconstruction
Comparisons look consistent to change of ECAL timing method + downstream effects.

[antoniovilela]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will be automatically merged.