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: Wed May 24 15:43:20 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger750298
======================================================================
Trigger: 00750298 Segment: 000
BAT Trigger Time: 515063641.216 [s; MET]
Trigger Stop: 515063641.664 [s; MET]
UTC: 2017-04-28T09:13:42.238600 [includes UTCF correction]
Where From?: (*SHORT BURST*) Expanded to TRIGTIME - 64 ms to TRIGTIME + 320 ms
BAT
RA: 330.062855519899 Dec: 26.9175780247122 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.87
Image Trigger?: NO
Rate S/N Ratio: 96.3587048480831 [ if not an image trigger ]
Image S/N Ratio: 12.87
Analysis Position: [ source = BAT ]
RA: 330.062855519899 Dec: 26.9175780247122 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 330.051862971472 Dec: 26.9135089948278 [deg; J2000]
{ 22h 00m 12.4s , +26d 54' 48.6" }
+/- 1.22146912638955 [arcmin] (estimated 90% radius based on SNR)
+/- 0.463192274735448 [arcmin] (formal 1-sigma fit error)
SNR: 22.8560159779109
Angular difference between the analysis and refined position is 0.636769 arcmin
Partial Coding Fraction: 0.625 [ including projection effects ]
Duration
T90: 0.199999928474426 +/- 0.0737563758292483
Measured from: 0.164000034332275
to: 0.363999962806702 [s; relative to TRIGTIME]
T50: 0.0999999642372131 +/- 0.0226274207069314
Measured from: 0.200000047683716
to: 0.300000011920929 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.199999988079071
to: 0.800000011920929 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.148000061511993
to: 0.448000013828278 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.040429 0.116143 0.133712 0.074641
0.006092 0.007808 0.008790 0.007758 [error]
Peak 0.044862 0.123833 0.134522 0.081290
0.009109 0.010458 0.010608 0.009487 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.300 0.148 0.448
T90 0.200 0.164 0.364
T50 0.100 0.200 0.300
Peak 1.000 -0.200 0.800
====== 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: N/A)
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 -0.759 -0.122 0.125 - - - 7.85e-02 -5.67e-03 5.65e-03 58.410 57
CPL -0.415 -0.441 0.548 266.609 -266.609 -266.609 1.12e-01 -3.82e-02 8.09e-02 56.980 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 -0.812 -0.154 0.159 - - - 2.46e-02 -2.22e-03 2.20e-03 51.690 57
CPL -0.589 -0.295 0.652 371.959 -371.959 -371.959 3.08e-02 -7.97e-03 2.69e-02 51.260 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 1.51e-08 4.38e-08 1.04e-07 6.71e-07 2.80e-07 8.34e-07 erg/cm2
90%_error_low -2.18e-09 -3.90e-09 -7.96e-09 -1.12e-07 -2.19e-08 -1.17e-07 erg/cm2
90%_error_hi 2.29e-09 3.85e-09 7.92e-09 1.28e-07 2.21e-08 1.31e-07 erg/cm2
Peak flux PL 5.25e-01 7.99e-01 9.10e-01 1.98e+00 2.82e+00 4.21e+00 ph/cm2/s
90%_error_low -9.88e-02 -9.47e-02 -8.18e-02 -3.70e-01 -2.50e-01 -4.16e-01 ph/cm2/s
90%_error_hi 1.06e-01 9.35e-02 8.14e-02 4.27e-01 2.51e-01 4.36e-01 ph/cm2/s
Fluence CPL 1.39e-08 4.50e-08 1.08e-07 4.21e-07 2.75e-07 5.88e-07 erg/cm2
90%_error_low -2.70e-09 -4.28e-09 -9.79e-09 -1.96e-07 -2.43e-08 -1.94e-07 erg/cm2
90%_error_hi 2.81e-09 4.39e-09 9.94e-09 2.86e-07 2.34e-08 2.87e-07 erg/cm2
Peak flux CPL 4.94e-01 8.07e-01 9.35e-01 1.57e+00 2.80e+00 3.80e+00 ph/cm2/s
90%_error_low -1.23e-01 -9.84e-02 -1.00e-01 -6.88e-01 -2.57e-01 -7.35e-01 ph/cm2/s
90%_error_hi 6.75e-02 9.98e-02 1.05e-01 5.27e-01 2.56e-01 4.82e-01 ph/cm2/s
======================================================================
Special notes of this burst