batgrbproduct Analysis for Trigger=559482
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 Jul 1 19:20:59 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger559482/GCN5_download_cron
======================================================================
Trigger: 00559482 Segment: 000
BAT Trigger Time: 394345074.368 [s; MET]
Trigger Stop: 394345075.392 [s; MET]
UTC: 2013-07-01T04:17:43.630460 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 357.215620241738 Dec: 36.099431990312 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 22.22
Image Trigger?: NO
Rate S/N Ratio: 135.14806694881 [ if not an image trigger ]
Image S/N Ratio: 22.22
Flight Position: [ source = BAT ]
RA: 357.215620241738 Dec: 36.099431990312 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 357.223962026721 Dec: 36.0959205423608 [deg; J2000]
{ 23h 48m 53.8s , +36d 05' 45.3" }
+/- 0.884288283149078 [arcmin] (estimated 90% radius based on SNR)
+/- 0.292853410548055 [arcmin] (formal 1-sigma fit error)
SNR: 36.2587518824111
Angular difference between Flight and Ground position is 0.456006 arcmin
Partial Coding Fraction: 0.28125 [ including projection effects ]
Duration
T90: 128 +/- 56
Measured from: -15.3679998517036
to: 112.632000148296 [s; relative to TRIGTIME]
T50: 16 +/- 16
Measured from: -15.3679998517036
to: 0.632000148296356 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 8.13200002908707
to: 9.13200002908707 [s; relative to TRIGTIME]
Total Fluence
Measured from: -15.3679999709129
to: 224.632000029087 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.828569 2.674534 2.135420 0.545823
0.117769 0.123941 0.108067 0.089064 [error]
Peak 0.010415 0.006398 0.012574 0.012291
0.011599 0.011612 0.010446 0.008806 [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 6.66e-07 1.21e-06 1.68e-06 4.88e-06 4.82e-06 8.43e-06 erg/cm2
Error 6.15e-08 6.75e-08 1.07e-07 6.73e-07 2.63e-07 7.46e-07 erg/cm2
Peak flux Power-law 1.06e-01 9.90e-02 6.38e-02 6.34e-02 2.95e-01 3.33e-01 ph/cm2/s
Error 1.52e-01 1.01e-01 7.15e-02 5.29e-01 3.00e-01 3.32e-01 ph/cm2/s
Fluence Cutoff-PL 6.15e-07 1.25e-06 1.74e-06 2.80e-06 4.71e-06 6.41e-06 erg/cm2
Error 7.46e-08 7.98e-08 1.21e-07 2.85e-07 1.36e-06 0.00e+00 erg/cm2
Peak flux Cutoff-PL 2.08e-02 1.18e-01 7.80e-02 1.89e-03 2.20e-01 2.36e-01 ph/cm2/s
Error 1.44e-01 1.37e-01 9.77e-02 1.01e-01 2.88e-01 0.00e+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 1.95e+01 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 1.523 0.089 - - 2.13e-03 1.09e-04 61.360 57
CPL 1.112 0.373 112.7 177.7 3.37e-03 1.44e-03 57.460 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.633 0.000 - - 2.27e-03 2.30e-03 51.660 57
CPL -9.487 0.000 52.6 0.0 2.64e+02 0.00e+00 51.300 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: 3.776000 sec.
T50 in the 50-300 keV band: 1.792000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 240.000 -15.368 224.632
T90 128.000 -15.368 112.632
T50 16.000 -15.368 0.632
Peak 1.000 8.132 9.132
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
357.2240 +36.0959 0.0053 41.2 -130.2 7.2193 36.3 TRIG_00559482
------------------------------------------
Foreground time interval of the image:
-15.368 13.633 (delta_t = 29.001 [sec])
Background time interval of the image:
-239.368 -15.368 (delta_t = 224.000 [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 -15.368 sec. to 224.632 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.52302 ( -0.0886107 0.0887158 )
Norm@50keV : 2.12631E-03 ( -0.000109078 0.000109007 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.36 using 59 PHA bins.
# Reduced chi-squared = 1.076 for 57 degrees of freedom
# Null hypothesis probability = 3.227024e-01
Photon flux (15-150 keV) in 240 sec: 0.267124 ( -0.0144849 0.014518 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.82342e-06 ( -2.62769e-07 2.63436e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -15.368 sec. to 224.632 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.11153 ( -0.389597 0.357402 )
Epeak [keV] : 112.697 ( -31.6648 323.757 )
Norm@50keV : 3.37400E-03 ( -0.00109222 0.00179482 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.46 using 59 PHA bins.
# Reduced chi-squared = 1.026 for 56 degrees of freedom
# Null hypothesis probability = 4.209429e-01
Photon flux (15-150 keV) in 240 sec: 0.261747 ( -0.01518 0.015203 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.7075e-06 ( -2.85624e-07 2.84136e-07 ) ergs/cm2
Band function
Time interval is from -15.368 sec. to 224.632 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.814403 ( -0.486099 0.807925 )
beta : -1.77409 ( 1.7695 0.238019 )
Epeak [keV] : 76.3529 ( -48.2445 126.503 )
Norm@50keV : 5.02785E-03 ( -0.00275306 32.1975 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.08 using 59 PHA bins.
# Reduced chi-squared = 1.020 for 55 degrees of freedom
# Null hypothesis probability = 4.342875e-01
Photon flux (15-150 keV) in 240 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] : 15.5137 ( )
R^2/D10^2 : 2.67605E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 130.22 using 59 PHA bins.
# Reduced chi-squared = 2.2846 for 57 degrees of freedom
# Null hypothesis probability = 1.174778e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.217e-07 3.456e-08
25- 50 1.318e-06 9.180e-08
50-150 2.190e-06 2.144e-07
15-150 3.829e-06 2.436e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 1.09348 (-0.0558102 0.0558105)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.42 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 57 degrees of freedom
# Null hypothesis probability = 4.230796e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.551e-07 3.684e-08
25- 50 1.260e-06 7.272e-08
50-150 2.764e-06 1.800e-07
15-150 4.679e-06 3.060e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.44893 (-1.75611 1.7952)
R1^2/D10^2 : 0.148366 (-0.0632401 0.156224)
kT2 [keV] : 29.7081 (-6.50012 13.9098)
R2^2/D10^2 : 1.99296E-03 (-0.00141946 0.00172301)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.12 using 59 PHA bins.
# Reduced chi-squared = 1.093 for 55 degrees of freedom
# Null hypothesis probability = 2.957765e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.437e-07 1.024e-07
25- 50 1.324e-06 2.208e-07
50-150 2.841e-06 7.988e-07
15-150 4.710e-06 1.293e-06
Peak spectrum fit
Power-law model
Time interval is from 8.132 sec. to 9.132 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.63294 ( -1.63301 -1.63301 )
Norm@50keV : 2.27453E-03 ( -0.00227451 0.00232253 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.66 using 59 PHA bins.
# Reduced chi-squared = 0.9063 for 57 degrees of freedom
# Null hypothesis probability = 6.750466e-01
Photon flux (15-150 keV) in 1 sec: 0.295354 ( -0.295354 0.304168 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.11912e-08 ( -2.11912e-08 2.36011e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 8.132 sec. to 9.132 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.48738 ( )
Epeak [keV] : 52.6272 ( )
Norm@50keV : 263.845 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.30 using 59 PHA bins.
# Reduced chi-squared = 0.9160 for 56 degrees of freedom
# Null hypothesis probability = 6.532078e-01
Photon flux (15-150 keV) in 1 sec: 0.220255 ( -0.220255 0.354915 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.90009e-16 ( 0 0 ) ergs/cm2
Band function
Time interval is from 8.132 sec. to 9.132 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.95182 ( 0.980101 0.980101 )
beta : -6.58516 ( 2.76045 2.76045 )
Epeak [keV] : 55.9816 ( -58.4191 -58.4191 )
Norm@50keV : 0.318171 ( -0.318178 620849 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.29 using 59 PHA bins.
# Reduced chi-squared = 0.9326 for 55 degrees of freedom
# Null hypothesis probability = 6.170184e-01
Photon flux (15-150 keV) in 1 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] : 13.7700 (-13.8143 -13.8143)
R^2/D10^2 : 4.91003E-02 (-0.0487527 -0.0487527)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.32 using 59 PHA bins.
# Reduced chi-squared = 0.9004 for 57 degrees of freedom
# Null hypothesis probability = 6.869755e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.969e-09 1.481e-09
25- 50 7.204e-09 5.935e-09
50-150 8.917e-09 8.295e-09
15-150 1.809e-08 1.515e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 161.217 (-156.351 -156.351)
Norm : 1.22081 (-1.23086 -1.23086)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.61 using 59 PHA bins.
# Reduced chi-squared = 0.9055 for 57 degrees of freedom
# Null hypothesis probability = 6.766474e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.115e-09 2.475e-09
25- 50 5.833e-09 4.404e-09
50-150 1.185e-08 1.033e-08
15-150 2.080e-08 1.555e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.47779E-02 (-0.0147779 -0.0147779)
R1^2/D10^2 : 1.92918E+22 (-1.92917e+22 -1.92917e+22)
kT2 [keV] : 13.8045 (-13.8045 -13.8045)
R2^2/D10^2 : 4.87173E-02 (-0.0487174 -0.0487174)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.32 using 59 PHA bins.
# Reduced chi-squared = 0.9332 for 55 degrees of freedom
# Null hypothesis probability = 6.158544e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Plot creation:
Mon Jul 1 19:46:38 EDT 2013