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 4 09:39:42 EST 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger621229
======================================================================
Trigger: 00621229 Segment: 000
BAT Trigger Time: 440079253.984 [s; MET]
Trigger Stop: 440079254.048 [s; MET]
UTC: 2014-12-12T12:14:01.076940 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 39.1608986244416 Dec: 18.1511958647858 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.02
Image Trigger?: NO
Rate S/N Ratio: 30.9838667696593 [ if not an image trigger ]
Image S/N Ratio: 11.02
Analysis Position: [ source = BAT ]
RA: 39.1608986244416 Dec: 18.1511958647858 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 39.1670914550982 Dec: 18.1628262126047 [deg; J2000]
{ 02h 36m 40.1s , +18d 09' 46.2" }
+/- 1.86749151919089 [arcmin] (estimated 90% radius based on SNR)
+/- 0.66770374222077 [arcmin] (formal 1-sigma fit error)
SNR: 12.4625249175311
Angular difference between the analysis and refined position is 0.782056 arcmin
Partial Coding Fraction: 0.5859375 [ including projection effects ]
Duration
T90: 0.287999987602234 +/- 0.0973241625432712
Measured from: 0
to: 0.287999987602234 [s; relative to TRIGTIME]
T50: 0.0800000429153442 +/- 0.0320000052452087
Measured from: 0.015999972820282
to: 0.0960000157356262 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.324000000953674
to: 0.675999999046326 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 0.335999965667725 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.040707 0.044029 0.043562 0.007425
0.005843 0.006356 0.005729 0.003880 [error]
Peak 0.042602 0.057932 0.048235 0.003536
0.008462 0.008942 0.007802 0.006201 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.336 0.000 0.336
T90 0.288 0.000 0.288
T50 0.080 0.016 0.096
Peak 1.000 -0.324 0.676
====== 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 -1.604 -0.231 0.220 - - - 2.31e-02 -3.48e-03 3.43e-03 59.020 57
CPL -1.146 -0.433 0.939 94.865 N/A N/A 3.97e-02 N/A N/A 58.030 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 -1.513 -0.278 0.269 - - - 9.79e-03 -1.71e-03 1.69e-03 57.330 57
CPL -0.481 -1.115 1.509 72.757 -20.801 -72.757 3.30e-02 -3.30e-02 1.53e-01 54.910 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 1.09e-08 1.88e-08 2.48e-08 6.62e-08 7.25e-08 1.21e-07 erg/cm2
90%_error_low -2.26e-09 -2.68e-09 -4.81e-09 -2.27e-08 -1.16e-08 -2.80e-08 erg/cm2
90%_error_hi 2.35e-09 2.67e-09 4.74e-09 2.83e-08 1.17e-08 3.22e-08 erg/cm2
Peak flux PL 4.08e-01 4.07e-01 2.86e-01 3.17e-01 1.23e+00 1.42e+00 ph/cm2/s
90%_error_low -1.04e-01 -7.04e-02 -6.21e-02 -1.18e-01 -2.04e-01 -2.41e-01 ph/cm2/s
90%_error_hi 1.11e-01 6.98e-02 6.15e-02 1.52e-01 2.05e-01 2.43e-01 ph/cm2/s
Fluence CPL 1.02e-08 2.00e-08 2.60e-08 3.61e-08 7.16e-08 9.23e-08 erg/cm2
90%_error_low -2.61e-09 -3.32e-09 -5.37e-09 -2.36e-08 -1.20e-08 -2.68e-08 erg/cm2
90%_error_hi 2.63e-09 3.47e-09 5.61e-09 3.94e-08 1.20e-08 4.25e-08 erg/cm2
Peak flux CPL 3.43e-01 4.51e-01 3.10e-01 1.19e-01 1.19e+00 1.22e+00 ph/cm2/s
90%_error_low -1.26e-01 -8.60e-02 -7.22e-02 -1.19e-01 -2.10e-01 -2.32e-01 ph/cm2/s
90%_error_hi 1.32e-01 9.11e-02 7.46e-02 2.24e-01 2.10e-01 2.87e-01 ph/cm2/s
======================================================================
Special notes of this burst