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 20 07:34:03 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger287409
======================================================================
Trigger: 00287409 Segment: 000
BAT Trigger Time: 208451960.036 [s; MET]
Trigger Stop: 208451960.1 [s; MET]
UTC: 2007-08-10T15:19:17.889760 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 8.94039483391689 Dec: 8.83544274479816 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.79
Image Trigger?: NO
Rate S/N Ratio: 15.3948043183407 [ if not an image trigger ]
Image S/N Ratio: 6.79
Analysis Position: [ source = BAT ]
RA: 8.94039483391689 Dec: 8.83544274479816 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 8.95523251043837 Dec: 8.81882137939258 [deg; J2000]
{ 00h 35m 49.3s , +08d 49' 07.8" }
+/- 2.48517876657543 [arcmin] (estimated 90% radius based on SNR)
+/- 1.17562189893019 [arcmin] (formal 1-sigma fit error)
SNR: 8.28555795667913
Angular difference between the analysis and refined position is 1.329839 arcmin
Partial Coding Fraction: 1.03125 [ including projection effects ]
Duration
T90: 0.0719999969005585 +/- 0.0233237884026992
Measured from: -0.00400000810623169
to: 0.0679999887943268 [s; relative to TRIGTIME]
T50: 0.0280000269412994 +/- 0.019999998807908
Measured from: 0.015999972820282
to: 0.0439999997615814 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.464000016450882
to: 0.535999983549118 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.00800001621246338
to: 0.0759999752044678 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.006922 0.007626 0.007570 0.002273
0.001572 0.001703 0.001699 0.001250 [error]
Peak 0.009539 0.013606 0.005849 0.004542
0.004499 0.004689 0.004287 0.003913 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.084 -0.008 0.076
T90 0.072 -0.004 0.068
T50 0.028 0.016 0.044
Peak 1.000 -0.464 0.536
====== 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 -1.054 -0.355 0.367 - - - 1.84e-02 -3.73e-03 3.73e-03 61.410 57
CPL -1.006 -3.054 1.220 999.292 N/A N/A 1.96e-02 N/A N/A 61.460 56
=== 1-s peak 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 -1.311 -0.735 0.784 - - - 2.14e-03 -8.91e-04 8.68e-04 45.750 57
CPL -1.313 -0.717 1.255 9999.260 -9999.260 -9999.260 2.14e-03 -2.14e-03 -2.14e-03 45.750 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 1.30e-09 3.15e-09 6.07e-09 2.86e-08 1.64e-08 3.92e-08 erg/cm2
90%_error_low -4.87e-10 -7.66e-10 -1.44e-09 -1.27e-08 -3.69e-09 -1.39e-08 erg/cm2
90%_error_hi 5.46e-10 7.37e-10 1.40e-09 1.84e-08 3.72e-09 1.88e-08 erg/cm2
Peak flux PL 7.34e-02 8.26e-02 6.66e-02 8.94e-02 2.55e-01 3.12e-01 ph/cm2/s
90%_error_low -4.64e-02 -3.72e-02 -3.38e-02 -8.94e-02 -1.03e-01 -1.30e-01 ph/cm2/s
90%_error_hi 5.43e-02 3.52e-02 3.35e-02 1.41e-01 1.03e-01 1.44e-01 ph/cm2/s
Fluence CPL 1.32e-09 3.13e-09 5.96e-09 3.03e-08 1.65e-08 3.81e-08 erg/cm2
90%_error_low N/A -7.74e-10 -1.62e-09 N/A -4.53e-09 -2.20e-08 erg/cm2
90%_error_hi N/A 8.58e-10 2.06e-09 N/A 3.84e-09 9.28e-09 erg/cm2
Peak flux CPL 7.45e-02 8.24e-02 6.65e-02 9.12e-02 2.56e-01 3.12e-01 ph/cm2/s
90%_error_low -4.99e-02 -3.66e-02 -6.65e-02 -9.12e-02 -1.05e-01 -9.98e-02 ph/cm2/s
90%_error_hi 5.31e-02 7.69e-02 3.60e-02 1.37e-01 1.03e-01 1.30e-01 ph/cm2/s
======================================================================
Special notes of this burst