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: Mon Jan 20 00:55:37 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger315615
======================================================================
Trigger: 00315615 Segment: 000
BAT Trigger Time: 236600020.544 [s; MET]
Trigger Stop: 236600021.568 [s; MET]
UTC: 2008-07-01T10:13:37.636600 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 45.8375449298875 Dec: 75.4918923999807 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 16.1
Image Trigger?: NO
Rate S/N Ratio: 26.153393661244 [ if not an image trigger ]
Image S/N Ratio: 16.1
Analysis Position: [ source = BAT ]
RA: 45.8375449298875 Dec: 75.4918923999807 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 45.9127869201079 Dec: 75.4795842537653 [deg; J2000]
{ 03h 03m 39.1s , +75d 28' 46.5" }
+/- 1.35916552399682 [arcmin] (estimated 90% radius based on SNR)
+/- 0.425668605946213 [arcmin] (formal 1-sigma fit error)
SNR: 19.6213691595353
Angular difference between the analysis and refined position is 1.351113 arcmin
Partial Coding Fraction: 0.5546875 [ including projection effects ]
Duration
T90: 17.8160000145435 +/- 6.71978603572693
Measured from: -2.07600000500679
to: 15.7400000095367 [s; relative to TRIGTIME]
T50: 4.73600000143051 +/- 1.37488909679171
Measured from: -0.571999996900558
to: 4.16400000452995 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.104000002145767
to: 0.895999997854233 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.72799998521805
to: 22.4600000083447 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.574259 0.555610 0.251320 0.066565
0.034911 0.036277 0.032957 0.031352 [error]
Peak 0.101926 0.108407 0.044157 0.009218
0.008349 0.008538 0.007413 0.006439 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 25.188 -2.728 22.460
T90 17.816 -2.076 15.740
T50 4.736 -0.572 4.164
Peak 1.000 -0.104 0.896
====== 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 -2.119 -0.159 0.153 - - - 3.16e-03 -3.30e-04 3.25e-04 53.690 57
CPL -1.646 -0.387 0.700 29.780 N/A N/A 6.02e-03 N/A N/A 51.880 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 -2.170 -0.183 0.173 - - - 1.43e-02 -1.84e-03 1.82e-03 58.330 57
CPL -0.851 -0.850 1.030 32.761 -11.352 6.860 9.21e-02 -9.21e-02 3.17e-01 50.740 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 1.82e-07 2.30e-07 2.12e-07 3.41e-07 7.41e-07 9.66e-07 erg/cm2
90%_error_low -1.95e-08 -1.79e-08 -3.03e-08 -8.76e-08 -6.83e-08 -1.24e-07 erg/cm2
90%_error_hi 2.00e-08 1.78e-08 3.12e-08 1.07e-07 6.98e-08 1.39e-07 erg/cm2
Peak flux PL 1.12e+00 7.62e-01 3.39e-01 2.08e-01 2.33e+00 2.43e+00 ph/cm2/s
90%_error_low -1.39e-01 -7.24e-02 -5.64e-02 -5.83e-02 -2.17e-01 -2.28e-01 ph/cm2/s
90%_error_hi 1.42e-01 7.22e-02 5.81e-02 7.13e-02 2.17e-01 2.28e-01 ph/cm2/s
Fluence CPL 1.76e-07 2.43e-07 2.03e-07 1.41e-07 7.00e-07 7.62e-07 erg/cm2
90%_error_low -2.17e-08 -2.32e-08 -3.70e-08 -9.16e-08 -8.08e-08 -1.28e-07 erg/cm2
90%_error_hi 2.17e-08 2.40e-08 3.48e-08 2.39e-07 8.56e-08 1.44e-07 erg/cm2
Peak flux CPL 1.03e+00 8.77e-01 2.98e-01 3.64e-02 2.24e+00 2.24e+00 ph/cm2/s
90%_error_low -1.56e-01 -1.01e-01 -7.78e-02 -3.64e-02 -2.19e-01 -2.22e-01 ph/cm2/s
90%_error_hi 1.57e-01 1.03e-01 7.35e-02 7.00e-02 2.21e-01 2.26e-01 ph/cm2/s
======================================================================
Special notes of this burst