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 v2.46
Process Start Time: Mon Jul 15 18:52:15 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger907754
======================================================================
Trigger: 00907754 Segment: 000
BAT Trigger Time: 581858888.768 [s; MET]
Trigger Stop: 581858889.792 [s; MET]
UTC: 2019-06-10T11:27:45.716980 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 46.2887188080502 Dec: -7.66601686408089 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.91
Image Trigger?: NO
Rate S/N Ratio: 45.8693797647189 [ if not an image trigger ]
Image S/N Ratio: 9.91
Analysis Position: [ source = BAT ]
RA: 46.2887188080502 Dec: -7.66601686408089 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 46.2392938192449 Dec: -7.65968343888696 [deg; J2000]
{ 03h 04m 57.4s , -07d 39' 34.9" }
+/- 1.83290769234039 [arcmin] (estimated 90% radius based on SNR)
+/- 0.8862085675582 [arcmin] (formal 1-sigma fit error)
SNR: 12.7998018316262
Angular difference between the analysis and refined position is 2.963482 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 0.631999969482422 +/- 0.100657807530861
Measured from: 0.248000025749207
to: 0.879999995231628 [s; relative to TRIGTIME]
T50: 0.363999962806702 +/- 0.0905096828275688
Measured from: 0.360000014305115
to: 0.723999977111816 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.0820000171661377
to: 1.08200001716614 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.212000012397766
to: 0.952000021934509 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.072293 0.104260 0.206245 0.143586
0.016182 0.020988 0.019321 0.023018 [error]
Peak 0.070520 0.130288 0.225724 0.132094
0.018500 0.023967 0.021644 0.026309 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.740 0.212 0.952
T90 0.632 0.248 0.880
T50 0.364 0.360 0.724
Peak 1.000 0.082 1.082
====== 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 -0.314 -0.250 0.277 - - - 3.96e-02 -6.25e-03 5.92e-03 56.550 57
CPL -0.195 -0.360 0.694 998.872 -998.872 -998.872 4.39e-02 -9.79e-03 2.38e-02 56.900 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 -0.414 -0.243 0.267 - - - 3.31e-02 -4.99e-03 4.78e-03 59.020 57
CPL -0.380 -0.269 0.264 9777.610 -9777.610 -9777.610 3.32e-02 -4.76e-03 4.24e-03 59.040 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 1.25e-08 4.80e-08 1.55e-07 1.63e-06 4.35e-07 1.84e-06 erg/cm2
90%_error_low -4.11e-09 -1.01e-08 -1.78e-08 -4.52e-07 -5.34e-08 -4.55e-07 erg/cm2
90%_error_hi 4.81e-09 9.93e-09 1.78e-08 6.07e-07 5.36e-08 6.02e-07 erg/cm2
Peak flux PL 4.87e-01 9.44e-01 1.42e+00 4.60e+00 3.99e+00 7.45e+00 ph/cm2/s
90%_error_low -1.55e-01 -1.95e-01 -1.69e-01 -1.19e+00 -4.95e-01 -1.19e+00 ph/cm2/s
90%_error_hi 1.79e-01 1.93e-01 1.69e-01 1.53e+00 4.98e-01 1.40e+00 ph/cm2/s
Fluence CPL 1.25e-08 4.83e-08 1.55e-07 1.63e-06 4.36e-07 1.83e-06 erg/cm2
90%_error_low N/A N/A N/A -8.53e-07 -7.03e-08 -8.14e-07 erg/cm2
90%_error_hi N/A N/A N/A 5.92e-07 6.91e-08 2.55e-07 erg/cm2
Peak flux CPL 4.81e-01 9.44e-01 1.42e+00 4.55e+00 3.98e+00 6.97e+00 ph/cm2/s
90%_error_low -2.20e-01 -2.04e-01 -1.73e-01 -2.13e+00 -5.18e-01 -2.20e+00 ph/cm2/s
90%_error_hi 1.31e-01 1.89e-01 2.24e-01 8.42e-01 5.01e-01 1.76e+00 ph/cm2/s
======================================================================
Special notes of this burst