Correlations

Correlations between binary modules and binary modules - telescope planes are booked in the dspSetup file, which also contains the list of dsp's that are readout and the corresponding detector modules connected to them.

Key Word Description

anchor: <detector name>

The module <detector name> is an anchor plane and correlations between this module and all other detector modules are created. If N modules are readout (as described in the dspSetUp file), N - 1 correlations are booked.

corr: <first module name> <second module name>

A correlation histogram between the module <first module name> and the module <second module name> are booked and filled.

tele: <binary module name> <telescope plane>

A correlation between the binary module >binary module name> and a telescope plane <telescope plane> is created. The name format for the telescope planes is the following:

tN.x	for x-planes
tN.y	for y-planes

where N is the plane number (0 - 3).

Histograms

Histogram id's for binary modules are incremented every time a new correlation is booked. There are three histograms booked: one for the correlation between two modules and two for the difference of the strip numbers. If N is the index for the correlations (N = 0 ... N_max - 1, where N_max is the total number of correlations), the following histograms are created for every correlation found in the dspSetUp file.

13200 + N

two dimensional histogram of the correlation between the two planes.

13250 + N

difference between the strip numbers of the two planes

13300 + N

as 13250 + N, but the offsets from the geometry file are subtracted for both modules.

The correlations between binary modules and telescope planes are booked with the
id's = 13400 + N (N = 0 ... n_max_tele -1), here n_max_tele is the total number of binary-telescope correlations.

Example

The following example reads out five binary modules. Ten correlations between the binary modules them self are booked and three correlations between binary modules and telescope planes.

#
# dspSetUp file
#

   0     0   uscs2
   1     0   lbic2_0
   1     1   lbic2_1
   2     0   sheff1
   3     0   att7
#
#  correlations
#
anchor: ucsc1  
anchor: lbic2_0
corr:   sheff1    lbic2_0
corr:   sheff1    att7
tele:   ucsc2     t1.x
tele:   ucsc2     t2.y
tele:   lbic2_1   t0.x

anchor: ucsc1

correlation plots with all the other 4 modules. The histogram id's are from 13200 - 13203.

anchor: lbic2_0

correlation plots of ucsc2 with all the other 4 modules. The histogram id's are from 13204 - 13207. There are now two correlations between ucsc2 and lbic2_0, form the first key (anchor: ucsc2) and this key (anchor: lbic2_0), sorry.

corr: sheff1 lbic2_0

correlation between sheff1 (x-axis) and lbic2_0. Hist id 13208.

corr: sheff1 att7

correlation between sheff1 (x-axis) and att7. Hist id 13209.

tele: ucsc2 t1.x

correlation between ucsc2 and telescope plane 1, x-strips. Hist id 13400.

tele: ucsc2 t2.y

correlation between ucsc2 and telescope plane 2, y-strips. Hist id 13401.

tele: ucsc2 t1.x

correlation between lbic2_1 and telescope plane 0, x-strips. Hist id 13402.