MODIFICATION OF GSPC CALIBRATION DATA
The new effective areas as given in EXPRESS No. 11, p.66 and the coefficients for
the analytical expression for the burst length efficiency (same EXPRESS p.64)
have been added to the GSPC CCF.
The new data reside in the newly defined data type EA which replaces data types
E1, E2.
EA contains 84 pairs of energy/area (Ei/EAi) for burst length window open
together with 5 energies EJ* and 13 coefficients
P1j, P2j for the transformation
to burst length windows 89-107 and 89-104.
Record 1:
Bytes 0-3 E1
4-7 EA1
8-11 E2
.
.
248-251 E32
252-255 EA32
Record 2:
Bytes 0-3 E33
4-7 EA33
8-11 E34
.
.
248-251 E64
252-255 EA64
Record 3:
Bytes 0-3 E65
4-7 EA65
8-11 E66
.
.
142-145 E84
146-149 EA84
150-255 spare
Record 4:
Bytes 0-3 E1*
4-7 E2*
8-11 E3*
12-15 E4*
16-19 E5*
20-23 spare
24-27 burst length window 1 lower limit
28-31 burst length window 2 upper limit
32-35 P11
36-39 scaling factor S11
40-43 P12
.
.
.
128-131 P113
132-135 S113
136-143 spare
144-147 burst length window 2 lower limit
148-151 burst length window 2 upper limit
152-155 P21
156-159 S21
.
.
.
248-251 P213
252-255 S213
Units: Ei = 0.01 keV
EAi = 0.001 cm2
Ej* = 1.0 keV
P1, P2 = 0.001
The coefficients POL1, PO12 (subroutine GSAXE) are given by:
POL1J = P1J/10S1J
POL2J=P2J/10S2J
M. Gottwald
[EXOSAT Home]
[About EXOSAT]
[Archive]
[Software]
[Gallery]
[Publications]