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: Thu Sep 28 17:56:00 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger770528
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Trigger: 00770528 Segment: 000
BAT Trigger Time: 526135766.848 [s; MET]
Trigger Stop: 526135767.872 [s; MET]
UTC: 2017-09-03T12:49:07.219440 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 254.511712851535 Dec: 34.9835881466908 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.84
Image Trigger?: NO
Rate S/N Ratio: 17.7763888346312 [ if not an image trigger ]
Image S/N Ratio: 9.84
Analysis Position: [ source = BAT ]
RA: 254.511712851535 Dec: 34.9835881466908 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 254.523170046904 Dec: 34.9822900582206 [deg; J2000]
{ 16h 58m 05.6s , +34d 58' 56.2" }
+/- 1.22057722602866 [arcmin] (estimated 90% radius based on SNR)
+/- 0.444986574520974 [arcmin] (formal 1-sigma fit error)
SNR: 22.8798787864337
Angular difference between the analysis and refined position is 0.568588 arcmin
Partial Coding Fraction: 0.3007812 [ including projection effects ]
Duration
T90: 27.7239999771118 +/- 4.50650779531548
Measured from: -5.26800000667572
to: 22.4559999704361 [s; relative to TRIGTIME]
T50: 10.3559999465942 +/- 1.76041018375818
Measured from: 1.00400000810623
to: 11.3599999547005 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.579999983310699
to: 1.5799999833107 [s; relative to TRIGTIME]
Total Fluence
Measured from: -9.99599999189377
to: 25.7039999961853 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.230462 1.452451 0.838055 0.305940
0.083683 0.081894 0.068563 0.055324 [error]
Peak 0.126376 0.164330 0.102325 0.036224
0.016225 0.017028 0.013970 0.010457 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 35.700 -9.996 25.704
T90 27.724 -5.268 22.456
T50 10.356 1.004 11.360
Peak 1.000 0.580 1.580
====== 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 -1.951 -0.122 0.120 - - - 7.17e-03 -5.15e-04 5.09e-04 72.710 57
CPL -2.011 -0.014 0.446 8.126 N/A N/A 6.65e-03 N/A N/A 72.640 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 -1.850 -0.207 0.202 - - - 2.78e-02 -3.56e-03 3.50e-03 67.430 57
CPL -1.855 -0.704 0.715 9999.360 N/A N/A 2.78e-02 N/A N/A 67.430 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 5.00e-07 6.99e-07 7.23e-07 1.37e-06 2.36e-06 3.29e-06 erg/cm2
90%_error_low -5.18e-08 -4.54e-08 -7.03e-08 -2.59e-07 -1.64e-07 -3.28e-07 erg/cm2
90%_error_hi 5.33e-08 4.54e-08 7.03e-08 2.96e-07 1.65e-07 3.53e-07 erg/cm2
Peak flux PL 1.60e+00 1.31e+00 7.29e-01 5.95e-01 3.91e+00 4.24e+00 ph/cm2/s
90%_error_low -2.93e-01 -1.57e-01 -1.19e-01 -1.72e-01 -4.71e-01 -4.93e-01 ph/cm2/s
90%_error_hi 3.05e-01 1.56e-01 1.18e-01 2.08e-01 4.72e-01 4.93e-01 ph/cm2/s
Fluence CPL 5.03e-07 6.97e-07 7.29e-07 1.35e-06 2.37e-06 3.29e-06 erg/cm2
90%_error_low N/A -4.36e-08 -1.38e-07 -6.24e-07 -1.84e-07 -3.52e-07 erg/cm2
90%_error_hi N/A 4.83e-08 4.34e-08 1.90e-07 1.57e-07 3.37e-07 erg/cm2
Peak flux CPL 1.60e+00 1.18e+00 5.99e-01 5.09e-01 3.58e+00 3.88e+00 ph/cm2/s
90%_error_low -3.77e-01 -2.57e-01 -1.37e-01 -1.10e-01 -7.71e-01 -1.02e+00 ph/cm2/s
90%_error_hi 3.48e-01 2.83e-01 1.27e-01 1.01e-01 7.97e-01 4.31e+00 ph/cm2/s
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