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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Wed Jan 22 21:18:43 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger147478
======================================================================
Trigger: 00147478 Segment: 000
BAT Trigger Time: 143901249 [s; MET]
Trigger Stop: 143901249.064 [s; MET]
UTC: 2005-07-24T12:34:09.361840 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 246.214226784009 Dec: -27.5239717279159 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.77
Image Trigger?: NO
Rate S/N Ratio: 32.832910318764 [ if not an image trigger ]
Image S/N Ratio: 10.77
Analysis Position: [ source = BAT ]
RA: 246.214226784009 Dec: -27.5239717279159 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 246.179863475337 Dec: -27.5253074911614 [deg; J2000]
{ 16h 24m 43.2s , -27d 31' 31.1" }
+/- 1.85612095261176 [arcmin] (estimated 90% radius based on SNR)
+/- 0.955463533104392 [arcmin] (formal 1-sigma fit error)
SNR: 12.5717325264243
Angular difference between the analysis and refined position is 1.830184 arcmin
Partial Coding Fraction: 0.3671875 [ including projection effects ]
Duration
T90: 98.6840000152588 +/- 8.55663207182055
Measured from: 0.0519999861717224
to: 98.7360000014305 [s; relative to TRIGTIME]
T50: 73.8680000007153 +/- 10.9161606717104
Measured from: 1.86000001430511
to: 75.7280000150204 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0239999890327454
to: 0.976000010967255 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.0239999890327454
to: 107.139999985695 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.731174 0.728827 0.366425 0.141312
0.073000 0.062626 0.053296 0.047404 [error]
Peak 0.128964 0.137256 0.105923 0.023961
0.011623 0.010839 0.009743 0.007480 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 107.164 -0.024 107.140
T90 98.684 0.052 98.736
T50 73.868 1.860 75.728
Peak 1.000 -0.024 0.976
====== 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 -1.934 -0.212 0.204 - - - 1.02e-03 -1.26e-04 1.23e-04 56.200 57
CPL -2.021 -0.272 0.590 11.479 N/A N/A 9.16e-04 N/A N/A 55.990 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 -1.658 -0.162 0.158 - - - 2.56e-02 -2.32e-03 2.29e-03 55.990 57
CPL -1.578 -0.897 0.576 244.546 N/A N/A 2.81e-02 N/A N/A 56.030 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 2.10e-07 2.97e-07 3.10e-07 5.98e-07 1.01e-06 1.42e-06 erg/cm2
90%_error_low -3.39e-08 -3.03e-08 -5.31e-08 -1.89e-07 -1.19e-07 -2.44e-07 erg/cm2
90%_error_hi 3.53e-08 3.03e-08 5.38e-08 2.42e-07 1.21e-07 2.84e-07 erg/cm2
Peak flux PL 1.23e+00 1.13e+00 7.14e-01 6.93e-01 3.36e+00 3.76e+00 ph/cm2/s
90%_error_low -1.80e-01 -1.02e-01 -8.40e-02 -1.56e-01 -2.95e-01 -3.20e-01 ph/cm2/s
90%_error_hi 1.88e-01 1.01e-01 8.32e-02 1.81e-01 2.96e-01 3.21e-01 ph/cm2/s
Fluence CPL 2.09e-07 2.60e-07 2.77e-07 5.95e-07 8.90e-07 1.40e-06 erg/cm2
90%_error_low -3.57e-08 -7.11e-08 -8.28e-08 -1.70e-07 -3.73e-07 -4.04e-07 erg/cm2
90%_error_hi 3.43e-08 4.35e-08 5.27e-08 1.33e-07 2.17e-07 2.81e-07 erg/cm2
Peak flux CPL 1.22e+00 1.13e+00 7.16e-01 6.60e-01 3.35e+00 3.72e+00 ph/cm2/s
90%_error_low -2.20e-01 -1.04e-01 -8.15e-02 -3.23e-01 -3.12e-01 -4.85e-01 ph/cm2/s
90%_error_hi 1.54e-01 1.15e-01 9.11e-02 1.43e-01 3.02e-01 3.53e-01 ph/cm2/s
======================================================================
Special notes of this burst