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 Jun 1 15:37:22 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger683906
======================================================================
Trigger: 00683906 Segment: 000
BAT Trigger Time: 483191363.52 [s; MET]
Trigger Stop: 483191364.544 [s; MET]
UTC: 2016-04-24T11:49:07.348300 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 319.480565124725 Dec: -60.4052836164155 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.78
Image Trigger?: NO
Rate S/N Ratio: 43.5086198356142 [ if not an image trigger ]
Image S/N Ratio: 15.78
Analysis Position: [ source = BAT ]
RA: 319.480565124725 Dec: -60.4052836164155 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 319.48462934057 Dec: -60.4081088330894 [deg; J2000]
{ 21h 17m 56.3s , -60d 24' 29.2" }
+/- 1.13082706229561 [arcmin] (estimated 90% radius based on SNR)
+/- 0.419566901776941 [arcmin] (formal 1-sigma fit error)
SNR: 25.5174988547371
Angular difference between the analysis and refined position is 0.207934 arcmin
Partial Coding Fraction: 0.3359375 [ including projection effects ]
Duration
T90: 6.4640000462532 +/- 0.951697413545641
Measured from: -0.879999995231628
to: 5.58400005102158 [s; relative to TRIGTIME]
T50: 1.98400002717972 +/- 0.354175118295394
Measured from: 0.0960000157356262
to: 2.08000004291534 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.0680000185966492
to: 1.06800001859665 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.42399996519089
to: 6.73600000143051 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.392838 0.687849 0.568343 0.183438
0.034348 0.037512 0.034184 0.027809 [error]
Peak 0.116218 0.200956 0.232535 0.085746
0.013395 0.015500 0.015920 0.012445 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 8.160 -1.424 6.736
T90 6.464 -0.880 5.584
T50 1.984 0.096 2.080
Peak 1.000 0.068 1.068
====== 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 -1.400 -0.104 0.104 - - - 1.58e-02 -9.53e-04 9.53e-04 50.790 57
CPL -1.105 -0.342 0.440 163.538 -67.656 -163.538 2.18e-02 -6.58e-03 1.30e-02 49.220 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 -1.143 -0.129 0.130 - - - 4.37e-02 -3.31e-03 3.31e-03 62.750 57
CPL -0.879 -0.327 0.551 248.160 -248.160 -248.160 5.72e-02 -1.60e-02 4.09e-02 61.940 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 1.50e-07 2.93e-07 4.44e-07 1.46e-06 1.25e-06 2.35e-06 erg/cm2
90%_error_low -1.65e-08 -1.99e-08 -3.24e-08 -2.21e-07 -8.05e-08 -2.44e-07 erg/cm2
90%_error_hi 1.71e-08 1.98e-08 3.22e-08 2.45e-07 8.07e-08 2.63e-07 erg/cm2
Peak flux PL 1.28e+00 1.59e+00 1.44e+00 2.27e+00 5.09e+00 6.58e+00 ph/cm2/s
90%_error_low -1.88e-01 -1.48e-01 -1.21e-01 -3.80e-01 -4.00e-01 -5.18e-01 ph/cm2/s
90%_error_hi 1.98e-01 1.46e-01 1.20e-01 4.23e-01 4.01e-01 5.23e-01 ph/cm2/s
Fluence CPL 1.41e-07 3.01e-07 4.57e-07 9.81e-07 1.23e-06 1.88e-06 erg/cm2
90%_error_low -2.02e-08 -2.26e-08 -3.70e-08 -3.93e-07 -8.53e-08 -3.95e-07 erg/cm2
90%_error_hi 2.06e-08 2.31e-08 3.77e-08 5.59e-07 8.48e-08 5.65e-07 erg/cm2
Peak flux CPL 6.17e-01 4.81e-01 2.63e-01 2.51e-01 1.46e+00 1.68e+00 ph/cm2/s
90%_error_low -3.24e-01 -2.38e-01 -9.30e-02 -2.84e-02 -7.00e-01 -7.22e-01 ph/cm2/s
90%_error_hi 2.48e-01 1.51e-01 5.45e-02 2.38e-02 4.26e-01 3.15e-01 ph/cm2/s
======================================================================
Special notes of this burst