Data Quality Monitoring for CMS RPC

A. Cimmino, D. Lomidze P. Noli, M. Maggi, P. Paolucci

Data Quality Monitor - RPC italy2

2 maggio 2007

RPC DQM requirements I

DQM has to monitor the RPC detector/trigger behavior and measure and summarize their performances:

Online monitoring in FF: pre-scaled subset of LV1 muon events (rate ?)delay is 0 ? CMS CPUs (how many ?)

Online monitoring in event consumer: pre-scaled subset of LV1 muon events (rate ?)Full use of DCS and XDAQ data via DBRPC CPUs (to design)delay ? seconds ?

Data Quality Monitor - RPC italy3

2 maggio 2007

RPC DQM requirements II

Quasi-online: LV1 muon eventsDCS and XDAQ access via Condition DBRPC CPUsdelay of minutes ?

Offline monitoring:for RPC experts to have a full analysisUsing full events and reconstruction toolsusing DBsCMS CPusdelay ? hours ?

Data Quality Monitor - RPC italy4

2 maggio 2007

Event Data monitoring MTCC I

DQM-analysis packages developed for RPC in CMSSW and test during the MTCC:

EventFilter/RPCRawToDigi (Segoni - Maggi): It drives the raw data unpacking and produces the RPCDigi collection committed to the event.

DQM/RPCMonitorModule (Segoni – Maggi): it carries out data integrity check and basic detector functioning tasks

POOLSource

Raw Data Digi

UnpackerDAQ

Clusters/RecHits

Local Muon Reconstruction RPCMonitorDigi

RPCMonitorModule

Event

Data Quality Monitor - RPC italy5

2 maggio 2007

Event Data monitoring MTCC II DQM/RPCMonitorDigi: Uses the digi produced by the

unpacker (i.e. for each h-partition the collection strip with signal and the BX ) to perform chamber performance checks:

BXN # of digi Occupancy Cluster multiplicity Cluster size

Sync: Specific trigger studies

Chamber efficiency is produced by extrapolating DT segments to the RPC mounted on the same DT chamber and looking for matching hits

Data Quality Monitor - RPC italy6

2 maggio 2007

DQM structure

source

source

source

collector

client

client

Filter FarmOnline/offile CPU

Data Quality Monitor - RPC italy7

2 maggio 2007

Where we are now

Source: We are now able to make plots/histos/results in the old style.

Define which plots/histos/results we want and how make them

How to access the online DB ?

How and where store the results ? Official Document to write !!

Data Quality Monitor - RPC italy8

2 maggio 2007

GUI Status

We are using IGUANA (is the final CMS choice ??)We can run GUI and connect to CollectorWe can take data from collector and display themConfiguration file for GUI layouts; it’s an automatic

way to divide, display and show only the histograms which are interesting

Alarm Plugin; to make color histograms and text messages using with ROOT classes in case of Errors, Warnings or Other Reports. For the moment It’s working well with “virtual” errors or warnings

Data Quality Monitor - RPC italy9

2 maggio 2007

GUI layouts

Data Quality Monitor - RPC italy10

2 maggio 2007

GUI with Alarm plugin

Data Quality Monitor - RPC italy11

2 maggio 2007

Conclusion

We now have more people able to work in all the aspects of the Data Quality Monitor

We are following the CMS decisions regarding the GUI and the way to access the online and offline DB.

We have to write an official document about the RPC DQM with our requirements and with the results we would like to monitor and store.