fix TrackToTrackComparisonHists logic for cosmics

[mmusich]

resolves #47780

PR description:

This PR is meant to fix issue #47780.
The crash is due to PR #47663.
In cosmic data-taking there might be events without any HLT pixel vertex collection in input for the monitoring module, but it's unnecessary to check the validity of the handle, as anyway the logic of the program repurposes the beam-spot for the vertex compatibility checks.

PR validation:

Checked that the recipe at #47780 (comment):

cmsrel CMSSW_15_0_3
cd CMSSW_15_0_3/src
cmsenv
cp /afs/cern.ch/work/f/fbrivio/public/ORM_April_2025/crash_Run390254/PSet.pkl .
cp /afs/cern.ch/work/f/fbrivio/public/ORM_April_2025/crash_Run390254/PSet.py .
cmsRun PSet.py

runs when used in conjunction of this branch.

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:

Not a backport, but will be backported to CMSSW_15_0_X for 2025 data-taking operations.

[mmusich]

type bug-fix

[cmsbuild]

cms-bot internal usage

[mmusich]

type bug-fix

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-47782/44366

[cmsbuild]

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

It involves the following packages:

• DQM/TrackingMonitorSource (dqm)

@antoniovagnerini, @cmsbuild, @rseidita can you please review it and eventually sign? Thanks.
@VinInn, @VourMa, @arossi83, @fioriNTU, @idebruyn, @jandrea, @mmusich, @mtosi, @richa2710, @sroychow, @threus this is something you requested to watch as well.
@antoniovilela, @mandrenguyen, @rappoccio, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

[mmusich]

test parameters:

• workflow = 7.25

[mmusich]

@cmsbuild, please test

[francescobrivio]

@mmusich I tested this PR and I can confirm it fixes the crash. Thanks a lot!

[francescobrivio]

urgent

• the 15_0_X backport ([15.0.X] fix TrackToTrackComparisonHists logic for cosmics #47783) is intended for the next data-taking release

[cmsbuild]

+1

Size: This PR adds an extra 24KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-f8e35e/45376/summary.html
COMMIT: 6b0fb21
CMSSW: CMSSW_15_1_X_2025-04-03-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/47782/45376/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially removed 4 lines from the logs
• Reco comparison results: 42 differences found in the comparisons
• DQMHistoTests: Total files compared: 53
• DQMHistoTests: Total histograms compared: 4142691
• DQMHistoTests: Total failures: 2375
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4140296
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 52 files compared)
• Checked 228 log files, 197 edm output root files, 53 DQM output files
• TriggerResults: no differences found

[francescobrivio]

@cms-sw/dqm-l2 a kind reminder of this PR (and its backport)

[antoniovagnerini]

+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 now be reviewed by the release team before it's merged. @mandrenguyen, @antoniovilela, @sextonkennedy, @rappoccio (and backports should be raised in the release meeting by the corresponding L2)

[mandrenguyen]

+1