class AliTPCcalibDB: public TObject

 Singleton implementation
 Returns an instance of this class, it is created if necessary

 Singleton implementation
 Deletes the instance of this class and sets the terminated flag, instances cannot be requested anymore
 This function can be called several times.

 constructor

 Copy constructor invalid -- singleton implementation

 Singleton implementation - no assignment operator

 destructor

delete fIonTailArray;

 get distortion map - due E field distortions

 Retrieves an entry with path <cdbPath> from the CDB.

 Sets current run number. Calibration data is read from the corresponding file.

 cache the OCDB entries for simulation, reconstruction, calibration

 Update/Load the parameters which are important for QA studies
 and not used yet for the reconstruction

RAW calibration data

 Create calibration objects and read contents from OCDB

 Initialize DeadChannel Map
 Source of information:
 -  HV (see UpdateChamberHighVoltageData())
 -  Altro disabled channels. Noisy channels.
 -  DDL list

 Write a tree with all available information
 if mapFileName is specified, the Map information are also written to the tree
 pads specified in outlierPad are not used for calculating statistics
  - the same function as AliTPCCalPad::MakeTree -

 return the RCU trigger configuration register

 return if the FEE readout was triggered on L0

 return if the FEE readout was triggered on L1

 Register static ExB correction map
 index - registration index - used for visualization
 bz    - bz field in kGaus

 bz filed in KGaus not in tesla
 Get ExB correction map
 if doesn't exist - create it

 Set magnetic filed for ExB correction

 Set magnetic field for ExB correction

 - > Don't use it for reconstruction - Only for Calibration studies

 Get Gain factor for given pad

 GetDrift velocity spline fit

 create spline fit from the drift time graph in TimeDrift

 Get GRP object for given run

 Get GRP map for given run

 Get Pressure sensor
 run  = run number
 type = 0 - Cavern pressure
        1 - Suface pressure
 First try to get if trom map - if existing  (Old format of data storing)

 Get temperature sensor array

 Get temperature sensor array

 Get drift spline array

 Get temperature sensor array

 Get temperature sensor array

 Get the interface to the the vdrift

 GetCE drift time information for 'sector'
 sector 72 is the mean drift time of the A-Side
 sector 73 is the mean drift time of the C-Side
 it timestamp==-1 return mean value

 GetCE mean charge for 'sector'
 it timestamp==-1 return mean value

 Get Value for a DCS sensor 'sensorName', run 'run' at time 'timeStamp'

 Get mean Value for a DCS sensor 'sensorName' during run 'run'

 set chamber high voltage data
 1. Robust median (sampling the hv graphs over time)
 2. Current nominal voltages (nominal voltage corrected for common HV offset)
 3. Fraction of good HV values over time (deviation from robust median)
 4. HV status, based on the above

 return the chamber HV for given run and time: 0-35 IROC, 36-72 OROC
 if timeStamp==-1 return mean value

 Get the skirt voltage for 'run' at 'timeStamp' and 'sector': 0-35 IROC, 36-72 OROC
 type corresponds to the following: 0 - IROC A-Side; 1 - IROC C-Side; 2 - OROC A-Side; 3 - OROC C-Side
 if timeStamp==-1 return the mean value for the run

 Get the cover voltage for run 'run' at time 'timeStamp'
 type corresponds to the following: 0 - IROC A-Side; 1 - IROC C-Side; 2 - OROC A-Side; 3 - OROC C-Side
 if timeStamp==-1 return the mean value for the run

 Get the GG offset voltage for run 'run' at time 'timeStamp'
 type corresponds to the following: 0 - IROC A-Side; 1 - IROC C-Side; 2 - OROC A-Side; 3 - OROC C-Side
 if timeStamp==-1 return the mean value for the run

 Get the GG offset voltage for run 'run' at time 'timeStamp'
 type corresponds to the following: 0 - IROC A-Side; 1 - IROC C-Side; 2 - OROC A-Side; 3 - OROC C-Side
 if timeStamp==-1 return the mean value for the run

 Get the GG offset voltage for run 'run' at time 'timeStamp'
 type corresponds to the following: 0 - IROC A-Side; 1 - IROC C-Side; 2 - OROC A-Side; 3 - OROC C-Side
 if timeStamp==-1 return the mean value for the run

 GetPressure for given time stamp and runt

 return L3 current
 stat type is: AliGRPObject::Stats: kMean = 0, kTruncMean = 1, kMedian = 2, kSDMean = 3, kSDMedian = 4

 calculate BZ in T from L3 current

 get l3 polarity from GRP

 return run type from grp

 GetPressure for given time stamp and runt

 GetTmeparature fit at parameter for given time stamp

 Get mean temperature

 Get relative P/T
 time - absolute time
 run  - run number
 side - 0 - A side   1-C side

 Function to covert old GRP run information from TMap to GRPObject

  TMap * map = AliTPCcalibDB::GetGRPMap(52406);

 Create a gui tree for run number 'run'

 Create a gui tree for run number 'run'

 Get time dependent drift velocity correction
 multiplication factor        vd = vdnom *(1+vdriftcorr)
 Arguments:
 mode determines the algorith how to combine the Laser Track, LaserCE and physics tracks
 timestamp - timestamp
 run       - run number
 side      - the drift velocity per side (possible for laser and CE)

 Notice - Extrapolation outside of calibration range  - using constant function

 Get time dependent time 0 (trigger delay in cm) correction
 additive correction        time0 = time0+ GetTime0CorrectionTime
 Value etracted combining the vdrift correction using laser tracks and CE and the physics track matchin
 Arguments:
 mode determines the algorith how to combine the Laser Track and physics tracks
 timestamp - timestamp
 run       - run number
 side      - the drift velocity per side (possible for laser and CE)

 Notice - Extrapolation outside of calibration range  - using constant function

 Get global y correction drift velocity correction factor
 additive factor        vd = vdnom*(1+GetVDriftCorrectionGy *gy)
 Value etracted combining the vdrift correction using laser tracks and CE or TPC-ITS
 Arguments:
 mode determines the algorith how to combine the Laser Track, LaserCE or TPC-ITS
 timestamp - timestamp
 run       - run number
 side      - the drift velocity gy correction per side (CE and Laser tracks)

 Notice - Extrapolation outside of calibration range  - using constant function

 Get deltaZ run/by/run  correction - as fitted together with drift velocity
 Value extracted  form the TPC-ITS, mean value is used

   Read list of active DDLs from OCDB entry
   Generate and return AliTPCCalPad containing 1 for all pads in active DDLs,
   0 for all pads in non-active DDLs.
   For DDLs with missing status information (no DCS input point to Shuttle),
     the value of the AliTPCCalPad entry is determined by the parameter
     notInMap (default value 1)

 GetComposed correction for given field setting
 If not specific correction for field used return correction for all field
        - Complication needed to gaurantee OCDB back compatibility
        - Not neeeded for the new space point correction

 GetComposedCorrection delta
 Delta is time dependent - taken form the CalibTime OCDB entry

 Correction for  changes of gain caused by change of the HV and by relative change of the gas density
 Function is slow some kind of caching needed
 Cache implemented using the static TVectorD

 Input paremeters:
  deltaCache - maximal time differnce above which the cache is recaclulated
  mode       - mode==0 by default return combined correction
                       actual HV and Pt correction has to be present in the run calibration otherwise it is ignored.
                       (retrun value differnt than 1 only in case calibration present in the OCDB entry CalibTimeGain
               mode==1 return combined correction ( important for calibration pass)
                       (in case thereis  no calibration in  CalibTimeGain, default value from the AliTPCParam (Parameters) is used
                       this mode is used in the CPass0
               mode==2 return HV correction
               mode==3 return P/T correction
  Usage in the simulation/reconstruction
  MC:     Qcorr  = Qorig*GetGainCorrectionHVandPT   ( in AliTPC.cxx )
  Rec:    dEdx   = dEdx/GetGainCorrectionHVandPT    ( in aliTPCseed.cxx )

ALTRO config data

Pulser data

CE data

Raw calibration

QA object

Reco param getter

Create a tree suited for diplaying with the AliTPCCalibViewerGUI