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.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.47
Process Start Time: Mon May 18 15:01:12 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger949361
======================================================================
Trigger: 00949361 Segment: 000
BAT Trigger Time: 600781848 [s; MET]
Trigger Stop: 600781912 [s; MET]
UTC: 2020-01-15T11:50:23.734140 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 56.4539329277401 Dec: 5.61281785041262 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.01
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 15.01
Analysis Position: [ source = BAT ]
RA: 56.4539329277401 Dec: 5.61281785041262 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 56.4518326005438 Dec: 5.60776455911605 [deg; J2000]
{ 03h 45m 48.4s , +05d 36' 28.0" }
+/- 1.13035909116946 [arcmin] (estimated 90% radius based on SNR)
+/- 0.377095709742856 [arcmin] (formal 1-sigma fit error)
SNR: 25.5325920508074
Angular difference between the analysis and refined position is 0.328113 arcmin
Partial Coding Fraction: 0.828125 [ including projection effects ]
Duration
T90: 242.139999985695 +/- 27.2340727025964
Measured from: -54.3519999980927
to: 187.787999987602 [s; relative to TRIGTIME]
T50: 64.067999958992 +/- 6.30407527055165
Measured from: 56.2680000066757
to: 120.335999965668 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 99.7480000257492
to: 100.748000025749 [s; relative to TRIGTIME]
Total Fluence
Measured from: -122.904000043869
to: 231.18799996376 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 5.675779 7.322475 4.753215 0.782666
0.156855 0.162595 0.139983 0.118669 [error]
Peak 0.115763 0.148657 0.151272 0.029834
0.010487 0.011775 0.010501 0.007492 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 354.092 -122.904 231.188
T90 242.140 -54.352 187.788
T50 64.068 56.268 120.336
Peak 1.000 99.748 100.748
====== 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: CPL)
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 -1.774 -0.055 0.055 - - - 3.42e-03 -1.03e-04 1.03e-04 53.920 57
CPL -1.212 -0.236 0.249 70.826 -8.354 16.335 6.46e-03 -1.48e-03 2.05e-03 36.190 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 -1.391 -0.127 0.127 - - - 2.95e-02 -2.28e-03 2.28e-03 60.840 57
CPL -0.812 -0.509 0.574 111.445 -31.086 323.213 5.55e-02 -2.32e-02 4.57e-02 56.990 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 1.99e-06 3.10e-06 3.63e-06 8.19e-06 1.11e-05 1.69e-05 erg/cm2
90%_error_low -1.06e-07 -9.78e-08 -1.44e-07 -6.89e-07 -3.43e-07 -7.94e-07 erg/cm2
90%_error_hi 1.08e-07 9.75e-08 1.44e-07 7.31e-07 3.43e-07 8.24e-07 erg/cm2
Peak flux PL 1.09e+00 1.17e+00 8.94e-01 1.11e+00 3.58e+00 4.27e+00 ph/cm2/s
90%_error_low -1.47e-01 -1.01e-01 -8.21e-02 -1.95e-01 -2.85e-01 -3.34e-01 ph/cm2/s
90%_error_hi 1.53e-01 1.00e-01 8.14e-02 2.17e-01 2.85e-01 3.35e-01 ph/cm2/s
Fluence CPL 1.78e-06 3.23e-06 3.73e-06 3.94e-06 1.06e-05 1.27e-05 erg/cm2
90%_error_low -1.33e-07 -1.13e-07 -1.57e-07 -9.41e-07 -3.95e-07 -1.03e-06 erg/cm2
90%_error_hi 1.35e-07 1.14e-07 1.58e-07 1.30e-06 3.95e-07 1.35e-06 erg/cm2
Peak flux CPL 9.62e-01 1.23e+00 9.58e-01 6.54e-01 3.51e+00 3.80e+00 ph/cm2/s
90%_error_low -1.82e-01 -1.15e-01 -1.00e-01 -2.35e-01 -2.93e-01 -3.89e-01 ph/cm2/s
90%_error_hi 1.88e-01 1.17e-01 1.02e-01 3.96e-01 2.93e-01 4.73e-01 ph/cm2/s
======================================================================
Special notes of this burst