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: Sun Jan 12 04:34:01 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger553847
======================================================================
Trigger: 00553847 Segment: 000
BAT Trigger Time: 388004464 [s; MET]
Trigger Stop: 388004528 [s; MET]
UTC: 2013-04-18T19:00:53.544240 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 149.043481794784 Dec: 13.6495345491784 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.78
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 9.78
Analysis Position: [ source = BAT ]
RA: 149.043481794784 Dec: 13.6495345491784 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 149.046174219361 Dec: 13.6735206031805 [deg; J2000]
{ 09h 56m 11.1s , +13d 40' 24.7" }
+/- 1.90746203895237 [arcmin] (estimated 90% radius based on SNR)
+/- 0.686867603475828 [arcmin] (formal 1-sigma fit error)
SNR: 12.0911355246573
Angular difference between the analysis and refined position is 1.447699 arcmin
Partial Coding Fraction: 0.8984375 [ including projection effects ]
Duration
T90: 274.923999965191 +/- 39.3195305513169
Measured from: -36.4200000166893
to: 238.503999948502 [s; relative to TRIGTIME]
T50: 142.919999957085 +/- 30.4247480423713
Measured from: -11.4639999866486
to: 131.455999970436 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -37.6759999990463
to: -36.6759999990463 [s; relative to TRIGTIME]
Total Fluence
Measured from: -40.1719999909401
to: 272.972000002861 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.252580 1.495362 0.522518 0.113974
0.099321 0.101952 0.089316 0.079598 [error]
Peak 0.027599 0.036905 0.000270 0.002243
0.008548 0.008343 0.007472 0.006831 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 313.144 -40.172 272.972
T90 274.924 -36.420 238.504
T50 142.920 -11.464 131.456
Peak 1.000 -37.676 -36.676
====== 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 -2.067 -0.174 0.166 - - - 6.11e-04 -7.08e-05 6.95e-05 62.530 57
CPL -1.295 -0.698 1.004 36.060 -34.441 15.911 1.76e-03 -1.09e-03 5.34e-03 59.760 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -2.569 -0.737 0.555 - - - 3.29e-03 -1.66e-03 1.72e-03 64.170 57
CPL 1.585 -3.307 7.303 30.126 -19.670 8.622 1.48e+00 -1.48e+00 9.67e+04 59.470 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 4.17e-07 5.44e-07 5.19e-07 8.80e-07 1.77e-06 2.36e-06 erg/cm2
90%_error_low -4.99e-08 -4.77e-08 -8.15e-08 -2.45e-07 -1.86e-07 -3.45e-07 erg/cm2
90%_error_hi 5.09e-08 4.77e-08 8.36e-08 3.03e-07 1.90e-07 3.90e-07 erg/cm2
Peak flux PL 3.83e-01 2.06e-01 6.94e-02 3.02e-02 6.75e-01 6.89e-01 ph/cm2/s
90%_error_low -1.36e-01 -7.50e-02 -4.08e-02 -3.02e-02 -2.13e-01 -2.18e-01 ph/cm2/s
90%_error_hi 1.41e-01 7.28e-02 5.00e-02 4.94e-02 2.13e-01 2.20e-01 ph/cm2/s
Fluence CPL 3.95e-07 5.92e-07 4.82e-07 2.33e-07 1.62e-06 1.70e-06 erg/cm2
90%_error_low -5.70e-08 -6.83e-08 -1.11e-07 -1.71e-07 -2.19e-07 -2.86e-07 erg/cm2
90%_error_hi 5.66e-08 7.09e-08 1.00e-07 6.56e-07 2.40e-07 6.92e-07 erg/cm2
Peak flux CPL 3.08e-01 3.11e-01 3.82e-02 1.67e-04 6.56e-01 6.58e-01 ph/cm2/s
90%_error_low -3.08e-01 -1.12e-01 -3.82e-02 -1.67e-04 -2.03e-01 -2.05e-01 ph/cm2/s
90%_error_hi 1.65e-01 1.15e-01 5.97e-02 1.14e-02 2.07e-01 2.06e-01 ph/cm2/s
======================================================================
Special notes of this burst