Comparison of the data with the model calculated with mean values of each parameters (26 Mar 2004)

We have developed the spectral model as a function of energy and angle with parameters listed below. In the previous web page, we fitted 32 coarse grid run data with this model. The extracted values for parameter #1-#7 for each data show weak dependency on the source positions (angles). Here, we compare the data with models which are calculated with using the mean values for the parameter #1-#6. The normalization (#7) is calculated from the source activity and the distance between the source and the center of the detector.

variables :
1.  sigma         : energy resolution [channel]
2.  gain_coeff    : gain_coeff * E^gain_index [channel/keV]
3.  gain_index    : 
4.  exp_lambda    : 1.0/(peak*exp_lambda) * exp( (E-main_peak)/(peak*exp_lambda) )
5.  exp_coeff     : exp_ratio = exp_coeff * (E/31.0keV)^(-exp_index)
6.  exp_index     : 
7.  norm          : overall incident phtoton flux before absorbed [photons/sec/cm^2]

constants :
8.  voltage       : bias voltage, fixed to 200 V
9.  src_x         : source position in bat_x
10. src_y         : source position in bat_y
11. src_z         : source position in bat_z

Fitting Results


cg06_x_ba133_030304_8_c_ff.pha	cg08_x_ba133_030304_10_c_ff.pha	cg09_x_ba133_030304_11_c_ff.pha

cg10_x_ba133_030304_12_c_ff.pha	cg11_x_ba133_030304_13_c_ff.pha	cg12_x_ba133_030304_14_c_ff.pha

cg13_x_ba133_030304_15_c_ff.pha	cg15_x_ba133_030304_17_c_ff.pha	cg16_x_ba133_030304_18_c_ff.pha

cg17_x_ba133_030304_19_c_ff.pha	cg18_x_ba133_030304_20_c_ff.pha	cg19_x_ba133_030304_21_c_ff.pha

cg20_x_ba133_030304_22_c_ff.pha	cg21_x_ba133_030304_23_c_ff.pha	cg23_x_ba133_030304_25_c_ff.pha

cg24_x_ba133_030304_26_c_ff.pha	cg25_x_ba133_030304_27_c_ff.pha	cg31_x_ba133_030304_33_c_ff.pha

cg33_x_ba133_030304_35_c_ff.pha	cg34_x_ba133_030304_36_c_ff.pha	cg35_x_ba133_030304_37_c_ff.pha

cg36_x_ba133_030304_38_c_ff.pha	cg37_x_ba133_030304_39_c_ff.pha	cg38_x_ba133_030304_40_c_ff.pha

cg39_x_ba133_030304_41_c_ff.pha	cg_x_ba133_030304_3_c_ff.pha	cg_x_ba133_030304_4_c_ff.pha

cg_x_ba133_030304_5_c_ff.pha	cg_x_ba133_200_21_030306_1_c_ff.pha	cg_x_ba133_200_21_030306_2_c_ff.pha

cg_x_ba133_200_21_030306_3_c_ff.pha	cg_x_ba133_200_21_030306_4_c_ff.pha

Return to main BAT response page