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 Dec 24 14:20:26 EST 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger301578
======================================================================
Trigger: 00301578 Segment: 000
BAT Trigger Time: 222754919.924 [s; MET]
Trigger Stop: 222754919.988 [s; MET]
UTC: 2008-01-23T04:21:57.402220 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 338.928685995783 Dec: -64.8899237672072 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.04
Image Trigger?: NO
Rate S/N Ratio: 36.9864840178139 [ if not an image trigger ]
Image S/N Ratio: 7.04
Analysis Position: [ source = BAT ]
RA: 338.928685995783 Dec: -64.8899237672072 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 338.929 Dec: -64.8899 [deg; J2000]
{ 22h 35m 43.0s , -64d -53' -23.6" }
+/- 3.01180324954 [arcmin] (estimated 90% radius based on SNR)
SNR: 6.29705086247
Angular difference between the analysis and refined position is 0.008121 arcmin
Partial Coding Fraction: 0.2050781 [ including projection effects ]
Duration
T90: 114.911999970675 +/- 55.267328797349
Measured from: 0.0279999971389771
to: 114.939999967813 [s; relative to TRIGTIME]
T50: 50.2719999849796 +/- 55.9885634028748
Measured from: 8.8120000064373
to: 59.0839999914169 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0480000078678131
to: 0.951999992132187 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0119999945163727
to: 121.131999999285 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.422964 0.284330 0.291417 -0.011039
0.091516 0.087083 0.074064 0.062707 [error]
Peak -0.002709 0.074689 0.068032 0.031129
0.015005 0.015003 0.013920 0.012061 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 121.120 0.012 121.132
T90 114.912 0.028 114.940
T50 50.272 8.812 59.084
Peak 1.000 -0.048 0.952
====== 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 -2.069 -0.546 0.468 - - - 4.95e-04 -1.67e-04 1.55e-04 48.220 57
CPL -1.985 N/A N/A 8.243 N/A N/A 5.50e-04 N/A N/A 48.220 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 -1.130 -0.412 0.443 - - - 1.28e-02 -3.33e-03 3.27e-03 55.030 57
CPL -0.203 -6.449 -1.836 116.436 N/A N/A 3.16e-02 N/A N/A 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 1.31e-07 1.70e-07 1.62e-07 2.74e-07 5.55e-07 7.38e-07 erg/cm2
90%_error_low -4.51e-08 -4.30e-08 -7.05e-08 -1.79e-07 -1.62e-07 -2.77e-07 erg/cm2
90%_error_hi 4.78e-08 4.27e-08 7.36e-08 3.21e-07 1.69e-07 3.80e-07 erg/cm2
Peak flux PL 3.70e-01 4.65e-01 4.25e-01 6.77e-01 1.49e+00 1.94e+00 ph/cm2/s
90%_error_low -1.73e-01 -1.53e-01 -1.09e-01 -3.04e-01 -4.02e-01 -4.80e-01 ph/cm2/s
90%_error_hi 2.15e-01 1.52e-01 1.08e-01 4.25e-01 4.12e-01 4.84e-01 ph/cm2/s
Fluence CPL 1.30e-07 1.72e-07 1.63e-07 3.76e-07 5.52e-07 7.03e-07 erg/cm2
90%_error_low -5.06e-08 -4.27e-08 -7.42e-08 -2.79e-07 -1.71e-07 -3.12e-07 erg/cm2
90%_error_hi 4.29e-08 4.27e-08 7.56e-08 1.51e-07 1.67e-07 3.69e-07 erg/cm2
Peak flux CPL 2.81e-01 4.77e-01 4.75e-01 3.42e-01 1.43e+00 1.57e+00 ph/cm2/s
90%_error_low -1.89e-01 -1.73e-01 -1.38e-01 -3.42e-01 -4.03e-01 -4.97e-01 ph/cm2/s
90%_error_hi 2.60e-01 1.72e-01 1.45e-01 4.90e-01 4.22e-01 6.63e-01 ph/cm2/s
======================================================================
Special notes of this burst