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: Thu Mar 21 17:40:51 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger883012
======================================================================
Trigger: 00883012 Segment: 000
BAT Trigger Time: 568833910.528 [s; MET]
Trigger Stop: 568833911.04 [s; MET]
UTC: 2019-01-10T17:24:48.300500 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 276.881511087457 Dec: -53.6765232636808 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.06
Image Trigger?: NO
Rate S/N Ratio: 14.7309198626562 [ if not an image trigger ]
Image S/N Ratio: 7.06
Analysis Position: [ source = BAT ]
RA: 276.881511087457 Dec: -53.6765232636808 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 276.937349271676 Dec: -53.6425548905936 [deg; J2000]
{ 18h 27m 45.0s , -53d 38' 33.2" }
+/- 0.798626147699119 [arcmin] (estimated 90% radius based on SNR)
+/- 0.27757308637701 [arcmin] (formal 1-sigma fit error)
SNR: 41.9399230801361
Angular difference between the analysis and refined position is 2.845236 arcmin
Partial Coding Fraction: 0.4335938 [ including projection effects ]
Duration
T90: 9.30400002002716 +/- 0.839094768973495
Measured from: 0.151999950408936
to: 9.4559999704361 [s; relative to TRIGTIME]
T50: 3.09999990463257 +/- 0.289806726624847
Measured from: 2.70000004768372
to: 5.79999995231628 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 4.71599996089935
to: 5.71599996089935 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.796000003814697
to: 10.9960000514984 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.096527 1.512993 1.040996 0.220600
0.052561 0.047340 0.040523 0.029454 [error]
Peak 0.230468 0.415133 0.305783 0.091921
0.018361 0.019382 0.017403 0.011466 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 11.792 -0.796 10.996
T90 9.304 0.152 9.456
T50 3.100 2.700 5.800
Peak 1.000 4.716 5.716
====== 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 -1.663 -0.070 0.070 - - - 2.26e-02 -8.66e-04 8.65e-04 51.830 57
CPL -1.367 -0.273 0.291 111.682 -31.579 484.718 3.13e-02 -8.00e-03 1.16e-02 48.390 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 -1.430 -0.093 0.093 - - - 7.34e-02 -3.98e-03 3.98e-03 45.380 57
CPL -1.278 -0.202 0.371 250.199 -250.199 -250.199 8.71e-02 -1.70e-02 4.38e-02 44.830 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 3.96e-07 6.58e-07 8.32e-07 2.10e-06 2.47e-06 3.98e-06 erg/cm2
90%_error_low -2.75e-08 -2.74e-08 -4.09e-08 -2.19e-07 -9.86e-08 -2.48e-07 erg/cm2
90%_error_hi 2.82e-08 2.73e-08 4.08e-08 2.35e-07 9.89e-08 2.60e-07 erg/cm2
Peak flux PL 2.83e+00 2.96e+00 2.20e+00 2.64e+00 9.01e+00 1.06e+01 ph/cm2/s
90%_error_low -2.80e-01 -1.83e-01 -1.42e-01 -3.39e-01 -5.12e-01 -5.78e-01 ph/cm2/s
90%_error_hi 2.89e-01 1.82e-01 1.41e-01 3.68e-01 5.13e-01 5.79e-01 ph/cm2/s
Fluence CPL 3.72e-07 6.74e-07 8.50e-07 1.40e-06 2.42e-06 3.30e-06 erg/cm2
90%_error_low -3.42e-08 -3.09e-08 -4.46e-08 -4.16e-07 -1.09e-07 -4.28e-07 erg/cm2
90%_error_hi 3.49e-08 3.13e-08 4.51e-08 6.32e-07 1.09e-07 6.31e-07 erg/cm2
Peak flux CPL 2.25e+00 1.63e+00 7.90e-01 6.50e-01 5.01e+00 4.61e+00 ph/cm2/s
90%_error_low -3.16e-01 -1.98e-01 -1.73e-01 -1.33e-01 -6.39e-01 -4.06e-02 ph/cm2/s
90%_error_hi 3.78e-01 2.22e-01 1.20e-01 1.84e-01 6.23e-01 1.39e+00 ph/cm2/s
======================================================================
Special notes of this burst