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 4 17:30:57 EST 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger727541
======================================================================
Trigger: 00727541 Segment: 000
BAT Trigger Time: 503866136.64 [s; MET]
Trigger Stop: 503866137.152 [s; MET]
UTC: 2016-12-19T18:48:39.308260 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 91.7173166987563 Dec: -26.7900102183723 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.78
Image Trigger?: NO
Rate S/N Ratio: 14.5258390463339 [ if not an image trigger ]
Image S/N Ratio: 7.78
Analysis Position: [ source = BAT ]
RA: 91.7173166987563 Dec: -26.7900102183723 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 91.7159522110343 Dec: -26.8012583033771 [deg; J2000]
{ 06h 06m 51.8s , -26d 48' 04.5" }
+/- 0.877838125941531 [arcmin] (estimated 90% radius based on SNR)
+/- 0.269374713552316 [arcmin] (formal 1-sigma fit error)
SNR: 36.6399519661241
Angular difference between the analysis and refined position is 0.678830 arcmin
Partial Coding Fraction: 0.4921875 [ including projection effects ]
Duration
T90: 6.93199992179871 +/- 0.793180905778267
Measured from: 0.0480000376701355
to: 6.97999995946884 [s; relative to TRIGTIME]
T50: 2.45199990272522 +/- 0.373909090932152
Measured from: 1.42800003290176
to: 3.87999993562698 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.55599999427795
to: 2.55599999427795 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.53600001335144
to: 8.3759999871254 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.777978 1.046229 0.617760 0.131593
0.034686 0.037015 0.031340 0.023604 [error]
Peak 0.160901 0.248936 0.163521 0.046570
0.013290 0.014511 0.012566 0.008831 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 8.912 -0.536 8.376
T90 6.932 0.048 6.980
T50 2.452 1.428 3.880
Peak 1.000 1.556 2.556
====== 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 -1.844 -0.080 0.079 - - - 1.88e-02 -8.79e-04 8.75e-04 53.080 57
CPL -1.294 -0.337 0.367 61.877 -9.264 24.539 3.61e-02 -1.17e-02 1.94e-02 44.960 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 -1.669 -0.115 0.113 - - - 4.03e-02 -2.89e-03 2.88e-03 91.720 57
CPL -0.852 -0.525 0.604 66.990 -11.792 36.994 1.09e-01 -5.05e-02 1.16e-01 84.240 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 2.96e-07 4.41e-07 4.91e-07 1.03e-06 1.54e-06 2.26e-06 erg/cm2
90%_error_low -2.14e-08 -1.99e-08 -3.06e-08 -1.29e-07 -7.24e-08 -1.57e-07 erg/cm2
90%_error_hi 2.19e-08 1.98e-08 3.05e-08 1.40e-07 7.26e-08 1.65e-07 erg/cm2
Peak flux PL 1.95e+00 1.78e+00 1.12e+00 1.07e+00 5.30e+00 5.92e+00 ph/cm2/s
90%_error_low -2.14e-01 -1.27e-01 -1.00e-01 -1.79e-01 -3.72e-01 -4.05e-01 ph/cm2/s
90%_error_hi 2.20e-01 1.27e-01 9.96e-02 1.98e-01 3.73e-01 4.06e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -2.14e-08 -1.99e-08 -3.06e-08 -1.29e-07 -7.24e-08 -1.57e-07 erg/cm2
90%_error_hi 2.19e-08 1.98e-08 3.05e-08 1.40e-07 7.26e-08 1.65e-07 erg/cm2
Peak flux CPL 1.89e+00 1.45e+00 7.76e-01 7.04e-01 4.41e+00 4.82e+00 ph/cm2/s
90%_error_low -2.66e-01 -1.59e-01 -1.15e-01 -9.21e-02 -4.42e-01 -3.33e-01 ph/cm2/s
90%_error_hi 2.66e-01 1.63e-01 5.96e-02 7.89e-02 4.74e-01 4.33e-01 ph/cm2/s
======================================================================
Special notes of this burst