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: Fri Oct 20 14:31:52 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger775553
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Trigger: 00775553 Segment: 000
BAT Trigger Time: 528575160 [s; MET]
Trigger Stop: 528575248 [s; MET]
UTC: 2017-10-01T18:25:40.226640 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 22.0881651678874 Dec: -11.8933202859369 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.92
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.92
Analysis Position: [ source = BAT ]
RA: 22.0881651678874 Dec: -11.8933202859369 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 22.0856134443431 Dec: -11.9254421918445 [deg; J2000]
{ 01h 28m 20.5s , -11d 55' 31.6" }
+/- 2.21229698656252 [arcmin] (estimated 90% radius based on SNR)
+/- 1.0381728184087 [arcmin] (formal 1-sigma fit error)
SNR: 9.78328965089821
Angular difference between the analysis and refined position is 1.933128 arcmin
Partial Coding Fraction: 0.7265625 [ including projection effects ]
Duration
T90: 20.9159999489784 +/- 1.35107659821179
Measured from: 12.783999979496
to: 33.6999999284744 [s; relative to TRIGTIME]
T50: 14.8439999222755 +/- 2.28122767053415
Measured from: 16.6800000071526
to: 31.5239999294281 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 31.4160000085831
to: 32.4160000085831 [s; relative to TRIGTIME]
Total Fluence
Measured from: 12.027999997139
to: 34.1959999799728 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.249561 0.292991 0.284680 0.098345
0.032751 0.034290 0.030186 0.027001 [error]
Peak 0.036464 0.041516 0.032255 0.002187
0.007264 0.007875 0.006869 0.005892 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 22.168 12.028 34.196
T90 20.916 12.784 33.700
T50 14.844 16.680 31.524
Peak 1.000 31.416 32.416
====== 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 -1.444 -0.203 0.201 - - - 2.69e-03 -3.06e-04 3.03e-04 69.420 57
CPL -1.303 N/A N/A 253.945 N/A N/A 3.16e-03 N/A N/A 69.330 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 -1.660 -0.353 0.331 - - - 7.23e-03 -1.59e-03 1.54e-03 54.570 57
CPL -1.169 -1.113 1.517 77.620 -37.026 -77.620 1.34e-02 -1.34e-02 7.48e-02 54.100 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 7.22e-08 1.37e-07 2.02e-07 6.36e-07 5.71e-07 1.05e-06 erg/cm2
90%_error_low -1.36e-08 -1.60e-08 -3.03e-08 -1.85e-07 -7.24e-08 -2.12e-07 erg/cm2
90%_error_hi 1.44e-08 1.58e-08 3.01e-08 2.32e-07 7.33e-08 2.50e-07 erg/cm2
Peak flux PL 3.47e-01 3.18e-01 2.01e-01 1.95e-01 9.47e-01 1.06e+00 ph/cm2/s
90%_error_low -9.71e-02 -6.05e-02 -5.67e-02 -9.02e-02 -1.79e-01 -2.08e-01 ph/cm2/s
90%_error_hi 1.03e-01 6.04e-02 5.68e-02 1.27e-01 1.79e-01 2.11e-01 ph/cm2/s
Fluence CPL 7.04e-08 1.39e-07 2.04e-07 5.11e-07 5.65e-07 9.25e-07 erg/cm2
90%_error_low -1.71e-08 -1.75e-08 -2.88e-08 -3.45e-07 -8.08e-08 -3.56e-07 erg/cm2
90%_error_hi 1.37e-08 1.96e-08 3.30e-08 1.68e-07 7.79e-08 1.87e-07 erg/cm2
Peak flux CPL 3.26e-01 3.36e-01 2.05e-01 1.06e-01 9.30e-01 9.73e-01 ph/cm2/s
90%_error_low -1.13e-01 -6.96e-02 -6.15e-02 -1.06e-01 -1.84e-01 -2.13e-01 ph/cm2/s
90%_error_hi 1.15e-01 7.88e-02 6.27e-02 1.22e-01 1.84e-01 2.40e-01 ph/cm2/s
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