batgrbproduct Analysis for Trigger=573190
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): Sat Oct 5 07:14:57 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger573190/GCN5_download_cron
======================================================================
Trigger: 00573190 Segment: 000
BAT Trigger Time: 402615674.8 [s; MET]
Trigger Stop: 402615674.864 [s; MET]
UTC: 2013-10-04T21:41:03.688480 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 296.151463967544 Dec: -2.96000761369023 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.17
Image Trigger?: NO
Rate S/N Ratio: 25.7293606605372 [ if not an image trigger ]
Image S/N Ratio: 10.17
Flight Position: [ source = BAT ]
RA: 296.151463967544 Dec: -2.96000761369023 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 296.108304733448 Dec: -2.95154863247386 [deg; J2000]
{ 19h 44m 26.0s , -02d 57' 05.6" }
+/- 1.09522162665664 [arcmin] (estimated 90% radius based on SNR)
+/- 0.399238058346145 [arcmin] (formal 1-sigma fit error)
SNR: 26.7108024752687
Angular difference between Flight and Ground position is 2.635442 arcmin
Partial Coding Fraction: 0.734375 [ including projection effects ]
Duration
T90: 1.53600001335144 +/- 0.326337243913619
Measured from: -0.1839998960495
to: 1.35200011730194 [s; relative to TRIGTIME]
T50: 0.51199996471405 +/- 0.0905096828275688
Measured from: 0.00800013542175293
to: 0.520000100135803 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.26800000667572
to: 0.73199999332428 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.248000025749207
to: 1.80000001192093 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.166036 0.201320 0.110901 0.014473
0.010367 0.010639 0.008918 0.006666 [error]
Peak 0.122674 0.171901 0.099649 0.013350
0.007930 0.008529 0.007005 0.004770 [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 5.10e-08 7.78e-08 8.90e-08 1.95e-07 2.76e-07 4.12e-07 erg/cm2
Error 5.05e-09 4.99e-09 8.55e-09 3.81e-08 2.01e-08 4.62e-08 erg/cm2
Peak flux Power-law 1.27e+00 1.13e+00 6.95e-01 6.49e-01 3.37e+00 3.74e+00 ph/cm2/s
Error 1.22e-01 7.05e-02 5.68e-02 1.03e-01 2.08e-01 2.27e-01 ph/cm2/s
Fluence Cutoff-PL 4.75e-08 8.36e-08 8.98e-08 7.81e-08 2.62e-07 2.99e-07 erg/cm2
Error 5.78e-09 6.69e-09 9.42e-09 5.84e-08 2.29e-08 6.23e-08 erg/cm2
Peak flux Cutoff-PL 1.12e+00 1.24e+00 7.27e-01 2.64e-01 3.26e+00 3.35e+00 ph/cm2/s
Error 1.43e-01 9.13e-02 6.49e-02 1.24e-01 2.15e-01 2.46e-01 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 1.805 0.114 - - 1.46e-02 1.04e-03 67.770 57
CPL 1.230 0.504 60.6 38.1 3.01e-02 2.10e-02 63.270 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.702 0.102 - - 2.53e-02 1.64e-03 81.210 57
CPL 0.851 0.477 63.4 15.3 7.18e-02 4.55e-02 69.540 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 2.048 -0.248 1.800
T90 1.536 -0.184 1.352
T50 0.512 0.008 0.520
Peak 1.000 -0.268 0.732
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
Foreground time interval of the image:
-0.248 1.800 (delta_t = 2.048 [sec])
Background time interval of the image:
-239.800 -0.248 (delta_t = 239.552 [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 -0.248 sec. to 1.800 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.80545 ( -0.113009 0.115297 )
Norm@50keV : 1.46227E-02 ( -0.00104518 0.00103518 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.77 using 59 PHA bins.
# Reduced chi-squared = 1.189 for 57 degrees of freedom
# Null hypothesis probability = 1.555572e-01
Photon flux (15-150 keV) in 2.048 sec: 2.01926 ( -0.131233 0.13135 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.75644e-07 ( -1.99979e-08 2.01572e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.248 sec. to 1.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.22973 ( -0.538693 0.46968 )
Epeak [keV] : 60.6148 ( -12.0942 64.1271 )
Norm@50keV : 3.01192E-02 ( -0.0131656 0.0287681 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.27 using 59 PHA bins.
# Reduced chi-squared = 1.130 for 56 degrees of freedom
# Null hypothesis probability = 2.352120e-01
Photon flux (15-150 keV) in 2.048 sec: 1.97025 ( -0.13735 0.13711 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.62291e-07 ( -2.27983e-08 2.29949e-08 ) ergs/cm2
Band function
Time interval is from -0.248 sec. to 1.800 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.812963 ( -0.744718 0.803624 )
beta : -2.18233 ( 2.18426 0.31719 )
Epeak [keV] : 48.0979 ( -21.6028 20.207 )
Norm@50keV : 5.50003E-02 ( -0.034768 1086.88 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.78 using 59 PHA bins.
# Reduced chi-squared = 1.123 for 55 degrees of freedom
# Null hypothesis probability = 2.468375e-01
Photon flux (15-150 keV) in 2.048 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] : 11.6323 (-0.847751 0.922935)
R^2/D10^2 : 0.544059 (-0.136097 0.179115)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 104.22 using 59 PHA bins.
# Reduced chi-squared = 1.8284 for 57 degrees of freedom
# Null hypothesis probability = 1.363669e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.178e-08 3.860e-09
25- 50 9.638e-08 7.526e-09
50-150 7.676e-08 1.161e-08
15-150 2.049e-07 1.582e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 98.3759 (-20.5828 30.6572)
Norm : 8.96253 (-0.803368 0.90877)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.23 using 59 PHA bins.
# Reduced chi-squared = 1.109 for 57 degrees of freedom
# Null hypothesis probability = 2.657378e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.797e-08 5.253e-09
25- 50 8.268e-08 5.806e-09
50-150 1.327e-07 4.210e-08
15-150 2.634e-07 4.403e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.72924 (-1.88478 1.90219)
R1^2/D10^2 : 1.82027 (-0.769887 2.79138)
kT2 [keV] : 26.4059 (-8.15809 17.6234)
R2^2/D10^2 : 1.65141E-02 (-0.0133371 0.0375571)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.22 using 59 PHA bins.
# Reduced chi-squared = 1.186 for 55 degrees of freedom
# Null hypothesis probability = 1.628585e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.318e-08 8.940e-09
25- 50 8.776e-08 1.992e-08
50-150 1.338e-07 6.069e-08
15-150 2.647e-07 7.610e-08
Peak spectrum fit
Power-law model
Time interval is from -0.268 sec. to 0.732 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.70192 ( -0.100989 0.102458 )
Norm@50keV : 2.53246E-02 ( -0.00164046 0.00163102 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.21 using 59 PHA bins.
# Reduced chi-squared = 1.425 for 57 degrees of freedom
# Null hypothesis probability = 1.929535e-02
Photon flux (15-150 keV) in 1 sec: 3.36564 ( -0.207879 0.208051 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.34441e-07 ( -1.58411e-08 1.59296e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.268 sec. to 0.732 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.851434 ( -0.506486 0.446766 )
Epeak [keV] : 63.3536 ( -9.48254 21.1383 )
Norm@50keV : 7.18477E-02 ( -0.0298346 0.0611034 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.54 using 59 PHA bins.
# Reduced chi-squared = 1.242 for 56 degrees of freedom
# Null hypothesis probability = 1.054932e-01
Photon flux (15-150 keV) in 1 sec: 3.26453 ( -0.21459 0.21453 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.20559e-07 ( -1.7395e-08 1.751e-08 ) ergs/cm2
Band function
Time interval is from -0.268 sec. to 0.732 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.851373 ( -0.414816 0.454117 )
beta : -10.00000 ( 10 9.70927e-09 )
Epeak [keV] : 63.3429 ( -8.4767 21.1294 )
Norm@50keV : 7.18486E-02 ( -0.029837 0.0611337 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.54 using 59 PHA bins.
# Reduced chi-squared = 1.264 for 55 degrees of freedom
# Null hypothesis probability = 8.969281e-02
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] : 12.6010 (-0.84459 0.919953)
R^2/D10^2 : 0.705115 (-0.162506 0.206635)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 107.34 using 59 PHA bins.
# Reduced chi-squared = 1.8831 for 57 degrees of freedom
# Null hypothesis probability = 6.274087e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.374e-08 2.480e-09
25- 50 7.902e-08 5.970e-09
50-150 7.785e-08 1.014e-08
15-150 1.806e-07 1.340e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 126.061 (-27.8263 38.1295)
Norm : 14.2853 (-1.05972 1.2179)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.00 using 59 PHA bins.
# Reduced chi-squared = 1.263 for 57 degrees of freedom
# Null hypothesis probability = 8.710393e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.713e-08 3.185e-09
25- 50 6.698e-08 5.530e-09
50-150 1.224e-07 3.904e-08
15-150 2.265e-07 4.490e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.27768 (-1.65827 1.51082)
R1^2/D10^2 : 2.25071 (-0.87198 2.06328)
kT2 [keV] : 25.8342 (-6.30098 12.4663)
R2^2/D10^2 : 3.16252E-02 (-0.0241259 0.040049)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.63 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 55 degrees of freedom
# Null hypothesis probability = 1.024330e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.217e-08 6.745e-09
25- 50 7.378e-08 1.500e-08
50-150 1.178e-07 5.079e-08
15-150 2.238e-07 6.612e-08
Plot creation:
Sat Oct 5 08:27:28 EDT 2013