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 05:11:42 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger299787
======================================================================
Trigger: 00299787 Segment: 000
BAT Trigger Time: 220479229.504 [s; MET]
Trigger Stop: 220479230.528 [s; MET]
UTC: 2007-12-27T20:13:47.043260 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 58.1198112281124 Dec: -55.9526448765147 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.54
Image Trigger?: NO
Rate S/N Ratio: 37.8549864614954 [ if not an image trigger ]
Image S/N Ratio: 8.54
Analysis Position: [ source = BAT ]
RA: 58.1198112281124 Dec: -55.9526448765147 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 58.1172025366673 Dec: -55.9367668281692 [deg; J2000]
{ 03h 52m 28.1s , -55d 56' 12.4" }
+/- 2.50386102313717 [arcmin] (estimated 90% radius based on SNR)
+/- 1.46768212690744 [arcmin] (formal 1-sigma fit error)
SNR: 8.19738266487804
Angular difference between the analysis and refined position is 0.956707 arcmin
Partial Coding Fraction: 0.4804688 [ including projection effects ]
Duration
T90: 142.480000019073 +/- 48.3692418348664
Measured from: 0.0639999806880951
to: 142.543999999762 [s; relative to TRIGTIME]
T50: 76.0879999995232 +/- 29.0811282443047
Measured from: 1.06000000238419
to: 77.1480000019073 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0999999940395355
to: 0.900000005960464 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.143999993801117
to: 150.551999986172 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.383434 0.393825 0.140048 0.176553
0.065006 0.067416 0.059104 0.051044 [error]
Peak 0.045265 0.071889 0.068048 0.034503
0.007711 0.009178 0.008787 0.007965 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 150.696 -0.144 150.552
T90 142.480 0.064 142.544
T50 76.088 1.060 77.148
Peak 1.000 -0.100 0.900
====== 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 -2.011 -0.376 0.338 - - - 3.55e-04 -9.36e-05 9.10e-05 53.840 57
CPL -0.234 -1.747 3.382 35.537 -10.673 -35.537 4.74e-03 -4.74e-03 8.73e-01 51.500 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 -0.980 -0.242 0.255 - - - 1.39e-02 -1.81e-03 1.80e-03 53.460 57
CPL -0.991 -0.229 0.413 9999.360 -9999.360 -9999.360 1.40e-02 -1.40e-02 6.02e-03 53.510 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 1.11e-07 1.49e-07 1.48e-07 2.65e-07 4.94e-07 6.73e-07 erg/cm2
90%_error_low -2.72e-08 -3.01e-08 -5.01e-08 -1.40e-07 -1.19e-07 -2.12e-07 erg/cm2
90%_error_hi 2.79e-08 2.97e-08 5.36e-08 2.19e-07 1.25e-07 2.75e-07 erg/cm2
Peak flux PL 3.48e-01 4.78e-01 4.85e-01 8.93e-01 1.60e+00 2.20e+00 ph/cm2/s
90%_error_low -9.47e-02 -8.11e-02 -7.03e-02 -2.62e-01 -2.11e-01 -3.18e-01 ph/cm2/s
90%_error_hi 1.03e-01 7.81e-02 6.90e-02 3.34e-01 2.11e-01 3.37e-01 ph/cm2/s
Fluence CPL 1.05e-07 1.81e-07 1.06e-07 1.41e-08 4.04e-07 4.06e-07 erg/cm2
90%_error_low -3.04e-08 -2.57e-08 -7.28e-08 -1.39e-08 -1.06e-07 -1.07e-07 erg/cm2
90%_error_hi 3.01e-08 4.70e-08 7.84e-08 3.12e-07 1.52e-07 3.56e-07 erg/cm2
Peak flux CPL 3.48e-01 4.74e-01 4.85e-01 8.86e-01 1.60e+00 2.32e+00 ph/cm2/s
90%_error_low -9.51e-02 -7.63e-02 -7.04e-02 N/A -2.11e-01 -5.02e-01 ph/cm2/s
90%_error_hi 1.02e-01 8.30e-02 6.91e-02 N/A 2.11e-01 1.75e-01 ph/cm2/s
======================================================================
Special notes of this burst