The dcs_cal.root ntuple is made from the dcs data from august to october.
More ntuples will be available soon.
dca_cal.root ---> no chamber deformation info
dca_1.root --> with chamber deformation info, 8 7 6 48 2
dca_2.root --> with chamber deformation info, 8 70 71 77 2

An event in the ntuple contains a rasnik reading of an inplane or praxial 
system together with the correcponding chamber temperature sensor readings.
If the temperature reading could not be found, they are set to -9999.

The variables in an event are listed below:

(NOTE: mapping of rasnik sensors and temperature sensors are taken from 
       standard drawings)

 "since_t"  -->from database, looks important, dont know.
 "till_t"   -->from database, looks important, dont know.
 "name"      the name of the channel
 "chanid"    the id of the channel (a unique number corresponding to name)
 "seqnr"     icaras sequence number
 "glob_err"  error from rasnik reading
 "anal_err"  error from rasnik reading
 "stime"     integer rasnik reading time coded usign ROOT standard TDatime.
 "ctime"     date
 "x"         rasnik x
 "y"         rasnik y
 "scale"     rasnik scale
 "rotZ"      rasnik rotZ
 "x_err"       corresponding errors
 "y_err"
 "scale_err"
 "rotZ_err"           "
 "chapos"    chamber position: 0=onder
 "bolnr"     chamber production number
==========================
Global chamber deformation. NOTE: CHAMBER COORDINATES. Middle XP =0,0,0
==========================
expx       Sum x translations of extreme crossplates (CPM,CPC) (buisrichting)
sagy       Sum y translations (doorhanging)
sagz       Sum z translations  (banaan)
rotxHV     rotation wrt x axis of CPM  (Torsie richting)
rotxRO     rotation wrt x axis of CPC  (Torsie richting)
rotyHV     rotation wrt y axis of CPM
rotyRO     rotation wrt y axis of CPC
texpHV     thermal expansion parameter of CPM (CPL=ref) (0=no exp)
texpRO     thermal expansion parameter of CPC (CPL=ref)
sagHV      sagitta of CPM (wrt extreme masks, assuming parabola)
sagLS      sagitta of CPL (wrt extreme lenses, assuming parabola)
sagRO      sagitta of CPC (wrt extreme CCDs, assuming parabola)
chis       chisquare of tower deformation calculation
 "Tsince_t"  -->from database, looks important, dont know.
 "Ttill_t"  -->from database, looks important, dont know.
 "chamber"   position as string
 "Tseqnr"    temperature sequence number
 "Tstime"    integer rasnik reading time coded usign ROOT standard TDatime.

 "T00"       HV spacer
 "T01"
 "T02"
 "T03"
 "T04"       Middle spacer
 "T05"       Middle spacer
 "T06"       RO space
 "T07"
 "T08"
 "T09"
 "T10"       Lower Multilayer starting at HV side.
 "T11"       Upper "
 "T12"       Lower ......
 "T13"       Upper .....
 "T14"
 "T15"
 "T16"       Lower ML RO
 "T17"       Upper ML RO