ALICE Calibration Requirements
Par # Parameter Data format/size per channel Data size (Total) Bytes Update freq Source Confirmed  Run type / Trigger type # of required events/sampling rate Processing level: sub-event or event Results: FEE/Archive Accessible by offline Calib. Procedure in AliRoot use case #
      on FES in OCDB reference                    
1 Thresholds 1 float   2.60E+06 0 week ? DCDB ? yes no   Yes No  
2 Pedestals 1 float   2.60E+06 0 day DAQ yes special calibration run 1000 events   FEE/OCDB Yes? No  
3 Noise levels  1 float    2.60E+06 0 day DAQ  yes special calibration run 1000 events   FEE/OCDB Yes No  
4 Gains 1 float   2.60E+06 0 week ? DCDB ? yes special calibration run ? 1000 events   OCDB Yes No  
5 Maps of dead/bad strips 1 int   1.82E+05 0 week ? DCDB yes  no?     OCDB Yes No  
1.06E+07 0.00E+00
DCS access - offline has access only to DCS archive DB, curently no access to configuration DB
DAQ - offline has access to raw data and DAQ logbook, but no acccess to LDC or GDC directly
OCDB - Calibration parameters are stored in the Offline Calibration DB. The data used to calculate these parameters, the reference data, can also be optionally archived for later access from offline.