batgrbproduct Analysis for Trigger=565443
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
- 4) This page will be updated for up to 10 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Mon Aug 5 23:26:54 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger565443/batgroup_hand_proc
======================================================================
Trigger: 00565443 Segment: 000
BAT Trigger Time: 397361360.752 [s; MET]
Trigger Stop: 397361360.76 [s; MET]
UTC: 2013-08-05T02:09:09.878800 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 266.420152890557 Dec: -29.0043786636235 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 9.83
Image Trigger?: NO
Rate S/N Ratio: 45.2437841034545 [ if not an image trigger ]
Image S/N Ratio: 9.83
Flight Position: [ source = BAT ]
RA: 266.420152890557 Dec: -29.0043786636235 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 266.403498918295 Dec: -29.0173030363041 [deg; J2000]
{ 17h 45m 36.8s , -29d 01' 02.3" }
+/- 1.88719894174702 [arcmin] (estimated 90% radius based on SNR)
+/- 0.721301588318725 [arcmin] (formal 1-sigma fit error)
SNR: 12.2770243336454
Angular difference between Flight and Ground position is 1.168322 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 0.00800001621246338 +/- 0.143108374017273
Measured from: 0
to: 0.00800001621246338 [s; relative to TRIGTIME]
T50: 0.00800001621246338 +/- 0.064
Measured from: 0
to: 0.00800001621246338 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 0.00800001621246338 second)
Measured from: 0
to: 0.00800001621246338 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 0.00800001621246338 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.008458 0.012116 0.004135 0.000502
0.001398 0.001354 0.000830 0.000336 [error]
Peak 0.008458 0.012116 0.004135 0.000502
0.001398 0.001354 0.000830 0.000336 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
=== 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 Power-law 3.01e-09 2.96e-09 2.03e-09 2.20e-09 8.88e-09 1.02e-08 erg/cm2
Error 5.81e-10 4.89e-10 5.43e-10 1.05e-09 1.52e-09 2.04e-09 erg/cm2
Peak flux Power-law 1.24e+01 6.80e+00 2.34e+00 1.05e+00 2.21e+01 2.26e+01 ph/cm2/s
Error 2.43e+00 1.11e+00 6.07e-01 4.69e-01 3.58e+00 3.63e+00 ph/cm2/s
Fluence Cutoff-PL 2.22e-09 5.20e-09 1.67e-09 2.37e-11 9.11e-09 9.11e-09 erg/cm2
Error 6.81e-10 9.03e-10 6.59e-10 5.73e-11 1.37e-09 1.37e-09 erg/cm2
Peak flux Cutoff-PL 8.65e+00 1.17e+01 2.15e+00 1.69e-02 2.25e+01 2.25e+01 ph/cm2/s
Error 2.80e+00 1.99e+00 7.89e-01 3.94e-02 3.58e+00 3.58e+00 ph/cm2/s
Fluence Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Peak flux Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.541 0.255 - - 1.10e-01 2.29e-02 62.880 57
CPL -2.245 2.129 34.9 3.7 8.04e+01 1.40e+03 37.030 56
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.541 0.255 - - 1.10e-01 2.29e-02 62.880 57
CPL -2.245 2.129 34.9 3.7 8.04e+01 1.40e+03 37.030 56
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^-{Ph_index} (minus sign is not included in the 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 PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedom
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 0.008 0.000 0.008
T90 0.008 0.000 0.008
T50 0.008 0.000 0.008
Peak 0.008 0.000 0.008
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
266.4035 -29.0173 0.0156 3.1874 17.3990 0.0245031 12.277 TRIG_00565443
Foreground time interval of the image:
0.000 0.008 (delta_t = 0.008 [sec])
Background time interval of the image:
-119.752 -8.752 (delta_t = 111.000 [sec])
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 6) Time of each bin is in the middle of the bin.
1 s binning
From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval
64 ms binning
Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec
16 ms binning
From T100_start-5 s to T100_start+5 s
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.54146 ( -0.242872 0.267578 )
Norm@50keV : 0.109768 ( -0.0230902 0.0226955 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.88 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 57 degrees of freedom
# Null hypothesis probability = 2.760688e-01
Photon flux (15-150 keV) in 0.008 sec: 22.1239 ( -3.57742 3.58077 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.88208e-09 ( -1.51681e-09 1.52935e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.24459 ( -2.48754 1.7706 )
Epeak [keV] : 34.9293 ( -3.88393 3.51702 )
Norm@50keV : 80.4120 ( -104.561 2690.29 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.03 using 59 PHA bins.
# Reduced chi-squared = 0.6613 for 56 degrees of freedom
# Null hypothesis probability = 9.762865e-01
Photon flux (15-150 keV) in 0.008 sec: 22.5344 ( -3.5721 3.5912 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.10696e-09 ( -1.36186e-09 1.37168e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.56680 ( -2.47646 1.91101 )
beta : -9.11594 ( 8.90445 18.7765 )
Epeak [keV] : 35.2643 ( -3.68437 3.25706 )
Norm@50keV : 122.570 ( -121.903 1622.17 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.02 using 59 PHA bins.
# Reduced chi-squared = 0.6730 for 55 degrees of freedom
# Null hypothesis probability = 9.701237e-01
Photon flux (15-150 keV) in 0.008 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.85158 (-0.875825 0.911055)
R^2/D10^2 : 19.9077 (-6.97092 10.715)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.24 using 59 PHA bins.
# Reduced chi-squared = 0.6533 for 57 degrees of freedom
# Null hypothesis probability = 9.801951e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.408e-09 4.996e-10
25- 50 4.986e-09 8.628e-10
50-150 1.807e-09 6.132e-10
15-150 9.202e-09 1.603e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 33.0935 (-6.86039 9.09419)
Norm : 178.595 (-41.3216 50.5328)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.57 using 59 PHA bins.
# Reduced chi-squared = 0.8872 for 57 degrees of freedom
# Null hypothesis probability = 7.133654e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.047e-09 5.592e-10
25- 50 3.668e-09 6.692e-10
50-150 2.276e-09 8.872e-10
15-150 8.991e-09 1.587e-09
Double BB
R1^2/D10^2 : 3.35761E+11 ( )
kT2 [keV] : 9.01726 (-0.895578 0.938883)
R2^2/D10^2 : 18.0296 (-6.49739 7.3901)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.91 using 59 PHA bins.
#Fit statistic : Chi-Squared = 33.83 using 59 PHA bins.
#Fit statistic : Chi-Squared = 33.56 using 59 PHA bins.
# Reduced chi-squared = 0.6165 for 55 degrees of freedom
# Reduced chi-squared = 0.6151 for 55 degrees of freedom
# Reduced chi-squared = 0.6101 for 55 degrees of freedom
# Null hypothesis probability = 9.887340e-01
# Null hypothesis probability = 9.890358e-01
# Null hypothesis probability = 9.900509e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.362e-09 5.496e-10
25- 50 4.865e-09 9.592e-10
50-150 1.871e-09 6.584e-10
15-150 9.098e-09 1.708e-09
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.54146 ( -0.242872 0.267578 )
Norm@50keV : 0.109768 ( -0.0230902 0.0226955 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.88 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 57 degrees of freedom
# Null hypothesis probability = 2.760688e-01
Photon flux (15-150 keV) in 0.008 sec: 22.1239 ( -3.57742 3.58077 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.88208e-09 ( -1.51681e-09 1.52935e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.24459 ( -2.48754 1.7706 )
Epeak [keV] : 34.9293 ( -3.88393 3.51702 )
Norm@50keV : 80.4120 ( -104.561 2690.29 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.03 using 59 PHA bins.
# Reduced chi-squared = 0.6613 for 56 degrees of freedom
# Null hypothesis probability = 9.762865e-01
Photon flux (15-150 keV) in 0.008 sec: 22.5344 ( -3.5721 3.5912 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.10696e-09 ( -1.36186e-09 1.37168e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.56680 ( -2.47646 1.91101 )
beta : -9.11594 ( 8.90445 18.7765 )
Epeak [keV] : 35.2643 ( -3.68437 3.25706 )
Norm@50keV : 122.570 ( -121.903 1382.39 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.02 using 59 PHA bins.
# Reduced chi-squared = 0.6730 for 55 degrees of freedom
# Null hypothesis probability = 9.701237e-01
Photon flux (15-150 keV) in 0.008 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.85158 (-0.875825 0.911055)
R^2/D10^2 : 19.9077 (-6.97092 10.715)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.24 using 59 PHA bins.
# Reduced chi-squared = 0.6533 for 57 degrees of freedom
# Null hypothesis probability = 9.801951e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.408e-09 5.564e-10
25- 50 4.986e-09 8.944e-10
50-150 1.807e-09 6.204e-10
15-150 9.202e-09 1.744e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 33.0935 (-6.86039 9.09419)
Norm : 178.595 (-41.3216 50.5328)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.57 using 59 PHA bins.
# Reduced chi-squared = 0.8872 for 57 degrees of freedom
# Null hypothesis probability = 7.133654e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.047e-09 5.756e-10
25- 50 3.668e-09 6.496e-10
50-150 2.276e-09 8.480e-10
15-150 8.991e-09 1.720e-09
Double BB
R1^2/D10^2 : 1.28418E+11 ( )
kT2 [keV] : 9.01870 (-0.894864 0.944123)
R2^2/D10^2 : 18.0136 (-6.49546 7.41878)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.91 using 59 PHA bins.
#Fit statistic : Chi-Squared = 33.64 using 59 PHA bins.
#Fit statistic : Chi-Squared = 33.62 using 59 PHA bins.
# Reduced chi-squared = 0.6165 for 55 degrees of freedom
# Reduced chi-squared = 0.6116 for 55 degrees of freedom
# Reduced chi-squared = 0.6112 for 55 degrees of freedom
# Null hypothesis probability = 9.887340e-01
# Null hypothesis probability = 9.897493e-01
# Null hypothesis probability = 9.898343e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.362e-09 5.972e-10
25- 50 4.865e-09 9.232e-10
50-150 1.871e-09 6.684e-10
15-150 9.098e-09 1.682e-09
Plot creation:
Tue Aug 6 00:25:47 EDT 2013