[14.0.X] BeamSpotOnlineProducer: add more printouts in case of invalid errors

[mmusich]

backport of #45679

PR description:

Yet another follow-up to #45555. As discussed with the beam spot team, this PR adds an additional level of printout when the algorithm fails to find a valid beamspot from the BeamSpotTransientObjectsRcd and falls back to the DB-stored PCL value, in the case that the input errors are not valid (should never be the case, but since it got logged (see #45555) it would be good to explicitly verify when it happens.
I profit of the PR to remove a couple of magic numbers for the beamspot covariance matrix size.

PR validation:

cmssw compiles

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 of #45679 for 2024 online data-taking operations.

[cmsbuild]

A new Pull Request was created by @mmusich for CMSSW_14_0_X.

It involves the following packages:

• RecoVertex/BeamSpotProducer (alca, reconstruction)

@cmsbuild, @consuegs, @jfernan2, @mandrenguyen, @perrotta, @saumyaphor4252 can you please review it and eventually sign? Thanks.
@GiacomoSguazzoni, @JanFSchulte, @VinInn, @VourMa, @dgulhan, @fabiocos, @francescobrivio, @martinamalberti, @missirol, @mmusich, @mtosi, @rovere, @rsreds, @tocheng, @yuanchao 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 BeamSpotOnlineProducer: add more printouts in case of invalid errors #45679

[cmsbuild]

cms-bot internal usage

[mmusich]

please test

[cmsbuild]

+1

Size: This PR adds an extra 16KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-0374d5/41003/summary.html
COMMIT: 5803265
CMSSW: CMSSW_14_0_X_2024-08-18-0000/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/45740/41003/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially added 7 lines to the logs
• Reco comparison results: 62 differences found in the comparisons
• DQMHistoTests: Total files compared: 49
• DQMHistoTests: Total histograms compared: 3449742
• DQMHistoTests: Total failures: 1241
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3448481
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 48 files compared)
• Checked 206 log files, 170 edm output root files, 49 DQM output files
• TriggerResults: no differences found

[perrotta]

+alca

• Verbatim backport of BeamSpotOnlineProducer: add more printouts in case of invalid errors #45679
• A few differences in test outputs: none of them is due to this PR

[jfernan2]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_14_0_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_14_1_X is complete. This pull request will now be reviewed by the release team before it's merged. @antoniovilela, @rappoccio, @sextonkennedy, @mandrenguyen (and backports should be raised in the release meeting by the corresponding L2)

[antoniovilela]

+1