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: Mon Jan 13 23:04:16 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger451191
======================================================================
Trigger: 00451191 Segment: 000
BAT Trigger Time: 324286408 [s; MET]
Trigger Stop: 324286488 [s; MET]
UTC: 2011-04-12T07:33:21.152460 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 133.491854211323 Dec: 13.5166846952985 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.83
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 8.83
Analysis Position: [ source = BAT ]
RA: 133.491854211323 Dec: 13.5166846952985 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 133.49169728859 Dec: 13.4874688089571 [deg; J2000]
{ 08h 53m 58.0s , +13d 29' 14.9" }
+/- 1.89268400535467 [arcmin] (estimated 90% radius based on SNR)
+/- 0.767274675406786 [arcmin] (formal 1-sigma fit error)
SNR: 12.2262284289314
Angular difference between the analysis and refined position is 1.752977 arcmin
Partial Coding Fraction: 0.1894531 [ including projection effects ]
Duration
T90: 24 +/- 4.48325596002306
Measured from: 14.6000000238419
to: 38.6000000238419 [s; relative to TRIGTIME]
T50: 8.96000003814697 +/- 1.83916499624357
Measured from: 18.3600000143051
to: 27.3200000524521 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 19.0040000081062
to: 20.0040000081062 [s; relative to TRIGTIME]
Total Fluence
Measured from: 13.6560000181198
to: 40.8880000114441 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.709616 1.163324 0.753439 0.201887
0.071859 0.076451 0.069989 0.065841 [error]
Peak 0.062485 0.077213 0.112712 0.005373
0.014191 0.016508 0.014963 0.012946 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 27.232 13.656 40.888
T90 24.000 14.600 38.600
T50 8.960 18.360 27.320
Peak 1.000 19.004 20.004
====== 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 -1.537 -0.136 0.135 - - - 6.96e-03 -5.80e-04 5.77e-04 66.010 57
CPL -0.776 -0.571 0.669 74.752 -17.033 81.665 1.78e-02 -8.84e-03 2.25e-02 60.580 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 -1.196 -0.296 0.308 - - - 1.76e-02 -3.13e-03 3.12e-03 66.460 57
CPL -0.754 -0.685 1.400 154.778 -154.778 -154.778 2.83e-02 N/A N/A 66.000 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 2.51e-07 4.50e-07 6.20e-07 1.78e-06 1.79e-06 3.10e-06 erg/cm2
90%_error_low -3.20e-08 -3.69e-08 -6.71e-08 -3.70e-07 -1.62e-07 -4.33e-07 erg/cm2
90%_error_hi 3.29e-08 3.68e-08 6.71e-08 4.32e-07 1.63e-07 4.82e-07 erg/cm2
Peak flux PL 5.41e-01 6.52e-01 5.69e-01 8.52e-01 2.06e+00 2.61e+00 ph/cm2/s
90%_error_low -1.74e-01 -1.39e-01 -1.15e-01 -3.11e-01 -3.79e-01 -4.81e-01 ph/cm2/s
90%_error_hi 1.92e-01 1.36e-01 1.13e-01 4.09e-01 3.80e-01 4.92e-01 ph/cm2/s
Fluence CPL 2.27e-07 4.91e-07 6.31e-07 5.80e-07 1.66e-06 1.93e-06 erg/cm2
90%_error_low -3.68e-08 -4.81e-08 -7.63e-08 -3.09e-07 -1.85e-07 -3.60e-07 erg/cm2
90%_error_hi 3.73e-08 4.99e-08 7.52e-08 7.10e-07 1.88e-07 7.15e-07 erg/cm2
Peak flux CPL 4.90e-01 6.75e-01 6.00e-01 5.48e-01 2.03e+00 2.31e+00 ph/cm2/s
90%_error_low -2.17e-01 -1.51e-01 -1.35e-01 -5.48e-01 -3.91e-01 -6.34e-01 ph/cm2/s
90%_error_hi 2.25e-01 1.57e-01 1.42e-01 4.21e-01 3.88e-01 6.32e-01 ph/cm2/s
======================================================================
Special notes of this burst