Fix phase2 tracker premixed digis

[mmusich]

resolves #29563

PR description:

Solves the two issues reported at #29563 by:

1. allowing the collections of PixelDigis produced by the premixing stage-1 and the signal digitization in step2 with two different conversion factor for IT and OT and then let the PreMixingPhase2TrackerWorker to undo the conversion separately for IT and OT.
2. configuring the Phase-2 digitizer to have analog readout for OT (for the PSS layers) at step 1 of pre-mixing, as actual charge information is essential.

PR validation:

Validation has been run twice:

• I tested wf 23461.99 (SingleNu gun - premixed, PU=200, Geometry = D49) and compared it with the same workflow run in a vanilla CMSSW_11_1_0_pre6 release and with the equivalent standard mixing workflow 23461.0 (SingleNu gun - standard mixing, PU=200, Geometry = D49).
• @suchandradutta tested also the changes with a signal TTbar + PU=200 sample and obtained the results below:

1. IT digis issue:
   

2. OT digis issue:
   

if this PR is a backport please specify the original PR and why you need to backport that PR:

This PR is not a backport.
@suchandradutta @emiglior @skinnari @tsusa

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

-code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-29565/14865

• This PR adds an extra 20KB to repository

• There are other open Pull requests which might conflict with changes you have proposed:

  • File SimTracker/SiPhase2Digitizer/python/phase2TrackerDigitizer_cfi.py modified in PR(s): Inclusion of Signal Shape Simulation for the Phase2 Tracker #29480

Code check has found code style and quality issues which could be resolved by applying following patch(s)

• code-format:
  https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-29565/14865/code-format.patch
  e.g. curl https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-29565/14865/code-format.patch | patch -p1
  You can also run scram build code-format to apply code format directly

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-29565/14867

• This PR adds an extra 20KB to repository

• There are other open Pull requests which might conflict with changes you have proposed:

  • File SimTracker/SiPhase2Digitizer/python/phase2TrackerDigitizer_cfi.py modified in PR(s): Inclusion of Signal Shape Simulation for the Phase2 Tracker #29480

[cmsbuild]

A new Pull Request was created by @mmusich (Marco Musich) for master.

It involves the following packages:

SimGeneral/PreMixingModule
SimTracker/SiPhase2Digitizer

@cmsbuild, @civanch, @kpedro88, @mdhildreth can you please review it and eventually sign? Thanks.
@fabiocos, @makortel, @GiacomoSguazzoni, @rovere, @VinInn, @ebrondol, @threus, @dgulhan this is something you requested to watch as well.
@silviodonato, @dpiparo you are the release manager for this.

cms-bot commands are listed here

[kpedro88]

test parameters
workflows = 20634.99

[kpedro88]

please test

[cmsbuild]

The tests are being triggered in jenkins.
Test Parameters:

• MATRIX_EXTRAS = 20634.99
  https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/5870/console Started: 2020/04/27 19:09

[cmsbuild]

+1
Tested at: 66a11ff
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-e9f5d4/5870/summary.html
CMSSW: CMSSW_11_1_X_2020-04-27-1100
SCRAM_ARCH: slc7_amd64_gcc820

[cmsbuild]

Comparison job queued.

[kpedro88]

+upgrade

[civanch]

+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. @silviodonato, @dpiparo (and backports should be raised in the release meeting by the corresponding L2)

[silviodonato]

please test workflow 23234.1001, 23434.1001

[cmsbuild]

The tests are being triggered in jenkins.
Test Parameters:

• MATRIX_EXTRAS = 23434.1001,23234.1001
  https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/5894/console Started: 2020/04/29 09:54

[cmsbuild]

+1
Tested at: 66a11ff
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-e9f5d4/5894/summary.html
CMSSW: CMSSW_11_1_X_2020-04-28-2300
SCRAM_ARCH: slc7_amd64_gcc820

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-e9f5d4/5894/summary.html

@slava77 comparisons for the following workflows were not done due to missing matrix map:

• /data/cmsbld/jenkins/workspace/compare-root-files-short-matrix/data/PR-e9f5d4/23234.1001_TTbar_14TeV+RecoFullGlobal_TestOldDigi_2026D49+HARVESTFullGlobal_2026D49
• /data/cmsbld/jenkins/workspace/compare-root-files-short-matrix/data/PR-e9f5d4/23434.1001_TTbar_14TeV+RecoFullGlobalPU_TestOldDigi_2026D49PU+HARVESTFullGlobalPU_2026D49PU

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 34
• DQMHistoTests: Total histograms compared: 2696435
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2696114
• DQMHistoTests: Total skipped: 319
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 33 files compared)
• Checked 147 log files, 16 edm output root files, 34 DQM output files

[silviodonato]

+1