Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun Jan 19 18:04:53 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger348650
======================================================================
Trigger: 00348650 Segment: 000
BAT Trigger Time: 260792910.272 [s; MET]
Trigger Stop: 260792912.32 [s; MET]
UTC: 2009-04-07T10:28:25.633160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 68.9590365303165 Dec: -12.6649961806079 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.43
Image Trigger?: NO
Rate S/N Ratio: 12.4498995979887 [ if not an image trigger ]
Image S/N Ratio: 8.43
Analysis Position: [ source = BAT ]
RA: 68.9590365303165 Dec: -12.6649961806079 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 68.979911283069 Dec: -12.6854652323429 [deg; J2000]
{ 04h 35m 55.2s , -12d 41' 07.7" }
+/- 2.19545937636357 [arcmin] (estimated 90% radius based on SNR)
+/- 1.00969117691705 [arcmin] (formal 1-sigma fit error)
SNR: 9.89065249839096
Angular difference between the analysis and refined position is 1.732491 arcmin
Partial Coding Fraction: 0.84375 [ including projection effects ]
Duration
T90: 315.471999973059 +/- 55.9086580720423
Measured from: -12.0880000293255
to: 303.383999943733 [s; relative to TRIGTIME]
T50: 218.223999977112 +/- 35.2983716431233
Measured from: 1.01599997282028
to: 219.239999949932 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.443999975919724
to: 1.44399997591972 [s; relative to TRIGTIME]
Total Fluence
Measured from: -17.688000023365
to: 329.351999998093 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.661117 0.685909 0.514664 0.103448
0.094667 0.099397 0.091158 0.089519 [error]
Peak 0.008021 0.033290 0.027090 0.015542
0.005588 0.006148 0.005792 0.005649 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 347.040 -17.688 329.352
T90 315.472 -12.088 303.384
T50 218.224 1.016 219.240
Peak 1.000 0.444 1.444
====== Spectral Analysis Summary =====================================
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^{Ph_index}
Ph_90err : 90% error of the photon index
Epeak : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm : normalization at 50 keV in both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedo
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.647 -0.278 0.266 - - - 3.54e-04 -5.97e-05 5.79e-05 62.070 57
CPL -1.585 -1.330 0.904 309.959 -309.949 -309.959 3.83e-04 -8.77e-05 7.78e-04 62.100 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -0.979 -0.366 0.400 - - - 5.71e-03 -1.22e-03 1.21e-03 57.820 57
CPL -0.976 -4.997 0.911 9999.360 N/A N/A 5.75e-03 N/A N/A 57.820 56
=== Fluence/Peak Flux Summary ===
Model Band1 Band2 Band3 Band4 Band5 Total
15-25 25-50 50-100 100-350 15-150 15-350 keV
Fluence PL 1.80e-07 3.03e-07 3.87e-07 9.92e-07 1.14e-06 1.86e-06 erg/cm2
90%_error_low -3.94e-08 -4.36e-08 -8.81e-08 -3.98e-07 -2.03e-07 -4.92e-07 erg/cm2
90%_error_hi 4.09e-08 4.36e-08 8.88e-08 5.49e-07 2.09e-07 6.19e-07 erg/cm2
Peak flux PL 1.43e-01 1.97e-01 1.99e-01 3.68e-01 6.57e-01 9.07e-01 ph/cm2/s
90%_error_low -5.91e-02 -5.41e-02 -4.53e-02 -1.54e-01 -1.41e-01 -2.03e-01 ph/cm2/s
90%_error_hi 6.81e-02 5.20e-02 4.45e-02 2.21e-01 1.42e-01 2.19e-01 ph/cm2/s
Fluence CPL 1.80e-07 3.01e-07 3.87e-07 9.89e-07 1.15e-06 1.94e-06 erg/cm2
90%_error_low N/A N/A N/A N/A -2.41e-07 -9.81e-07 erg/cm2
90%_error_hi N/A N/A N/A N/A 2.11e-07 6.62e-07 erg/cm2
Peak flux CPL 1.45e-01 1.97e-01 1.99e-01 3.71e-01 6.57e-01 9.06e-01 ph/cm2/s
90%_error_low -6.76e-02 -5.10e-02 -4.52e-02 -3.71e-01 -1.42e-01 -3.24e-01 ph/cm2/s
90%_error_hi 5.30e-02 5.70e-02 5.27e-02 2.75e-01 1.41e-01 2.01e-01 ph/cm2/s
======================================================================