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: Mon Jul 15 19:03:24 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger903845
======================================================================
Trigger: 00903845 Segment: 000
BAT Trigger Time: 579629084.224 [s; MET]
Trigger Stop: 579629086.272 [s; MET]
UTC: 2019-05-15T16:04:21.314940 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 98.8398449449947 Dec: 52.2947102013463 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.98
Image Trigger?: NO
Rate S/N Ratio: 7.41619848709566 [ if not an image trigger ]
Image S/N Ratio: 9.98
Analysis Position: [ source = BAT ]
RA: 98.8398449449947 Dec: 52.2947102013463 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 98.8333612658648 Dec: 52.3209179182834 [deg; J2000]
{ 06h 35m 20.0s , +52d 19' 15.3" }
+/- 1.42102456969087 [arcmin] (estimated 90% radius based on SNR)
+/- 0.634172757131786 [arcmin] (formal 1-sigma fit error)
SNR: 18.4126421553458
Angular difference between the analysis and refined position is 1.590351 arcmin
Partial Coding Fraction: 0.6796875 [ including projection effects ]
Duration
T90: 46.5119999647141 +/- 9.64451343727788
Measured from: -20.135999917984
to: 26.37600004673 [s; relative to TRIGTIME]
T50: 14.3680000305176 +/- 2.80114262250384
Measured from: -4.32799994945526
to: 10.0400000810623 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.388000011444092
to: 0.611999988555908 [s; relative to TRIGTIME]
Total Fluence
Measured from: -25.5440000295639
to: 31.8000000715256 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.940217 0.949570 0.643713 0.165924
0.068458 0.070549 0.061163 0.051443 [error]
Peak 0.035895 0.066082 0.030508 0.011655
0.009578 0.010319 0.008893 0.007166 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 57.344 -25.544 31.800
T90 46.512 -20.136 26.376
T50 14.368 -4.328 10.040
Peak 1.000 -0.388 0.612
====== 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 -1.788 -0.155 0.151 - - - 2.79e-03 -2.58e-04 2.54e-04 52.770 57
CPL -1.795 -0.149 0.350 9999.360 -9999.350 -9999.360 2.78e-03 -1.59e-03 1.43e-03 52.790 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 -1.604 -0.341 0.328 - - - 8.64e-03 -1.95e-03 1.92e-03 47.990 57
CPL -0.149 -1.568 2.998 56.160 -15.995 -56.160 5.61e-02 -5.61e-02 3.03e+00 45.690 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 2.68e-07 4.14e-07 4.79e-07 1.07e-06 1.48e-06 2.23e-06 erg/cm2
90%_error_low -3.38e-08 -3.32e-08 -6.08e-08 -2.56e-07 -1.39e-07 -3.17e-07 erg/cm2
90%_error_hi 3.47e-08 3.32e-08 6.10e-08 3.06e-07 1.41e-07 3.56e-07 erg/cm2
Peak flux PL 3.93e-01 3.72e-01 2.45e-01 2.50e-01 1.11e+00 1.26e+00 ph/cm2/s
90%_error_low -1.20e-01 -7.99e-02 -6.80e-02 -1.12e-01 -2.34e-01 -2.68e-01 ph/cm2/s
90%_error_hi 1.28e-01 7.95e-02 6.78e-02 1.54e-01 2.35e-01 2.71e-01 ph/cm2/s
Fluence CPL 2.71e-07 4.09e-07 4.78e-07 1.06e-06 1.49e-06 2.22e-06 erg/cm2
90%_error_low N/A -3.48e-08 N/A N/A -1.83e-07 -5.06e-07 erg/cm2
90%_error_hi N/A 4.92e-08 N/A N/A 1.61e-07 3.48e-07 erg/cm2
Peak flux CPL 3.35e-01 4.42e-01 2.53e-01 5.47e-02 1.07e+00 1.08e+00 ph/cm2/s
90%_error_low -1.42e-01 -1.13e-01 -1.01e-01 -5.47e-02 -2.42e-01 -2.51e-01 ph/cm2/s
90%_error_hi 1.46e-01 1.30e-01 8.34e-02 2.45e-01 2.41e-01 2.89e-01 ph/cm2/s
======================================================================
Special notes of this burst