[15.0.X] fix TrackToTrackComparisonHists logic for cosmics

[mmusich]

backport of #47782

PR description:

This PR is meant to fix issue #47780.
The crash is due to PR #47664.
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:

Verbatim backport to #47782 for 2025 data-taking operations.

[cmsbuild]

A new Pull Request was created by @mmusich for CMSSW_15_0_X.

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

• Backported from fix TrackToTrackComparisonHists logic for cosmics #47782

[cmsbuild]

cms-bot internal usage

[mmusich]

type bug-fix

[mmusich]

test parameters:

• workflow = 7.25

[mmusich]

@cmsbuild, please test

[cmsbuild]

+1

Size: This PR adds an extra 24KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8730d3/45375/summary.html
COMMIT: 6ef7ef2
CMSSW: CMSSW_15_0_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/47783/45375/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially added 3 lines to the logs
• Reco comparison results: 170 differences found in the comparisons
• DQMHistoTests: Total files compared: 52
• DQMHistoTests: Total histograms compared: 4113920
• DQMHistoTests: Total failures: 3293
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4110607
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 51 files compared)
• Checked 227 log files, 197 edm output root files, 52 DQM output files
• TriggerResults: no differences found

[francescobrivio]

@cms-sw/dqm-l2 a kind reminder of this PR

[antoniovagnerini]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_15_0_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_15_1_X is complete. This pull request will now be reviewed by the release team before it's merged. @rappoccio, @mandrenguyen, @sextonkennedy, @antoniovilela (and backports should be raised in the release meeting by the corresponding L2)

[francescobrivio]

urgent

• To keep this in the loop for the next 15_0_X for data taking FYI @cms-sw/orp-l2
• FYI @mpresill

[mandrenguyen]

+1