batgrbproduct Analysis for Trigger=559642
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): Wed Jul 3 08:07:42 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger559642/batgroup_hand_proc
======================================================================
Trigger: 00559642 Segment: 000
BAT Trigger Time: 394445456 [s; MET]
Trigger Stop: 394445520 [s; MET]
UTC: 2013-07-02T08:10:45.257980 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 130.213125900579 Dec: -45.0658835153272 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 7.16
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.16
Flight Position: [ source = BAT ]
RA: 130.213125900579 Dec: -45.0658835153272 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 130.183770911454 Dec: -45.0156425731937 [deg; J2000]
{ 08h 40m 44.1s , -45d 00' 56.3" }
+/- 3.18964795013421 [arcmin] (estimated 90% radius based on SNR)
+/- 1.58673251791683 [arcmin] (formal 1-sigma fit error)
SNR: 5.80077309621852
Angular difference between Flight and Ground position is 3.261262 arcmin
Partial Coding Fraction: 0.546875 [ including projection effects ]
Duration
T90: 512 +/- 93.2952303175248
Measured from: -47
to: 465 [s; relative to TRIGTIME]
T50: 288 +/- 80
Measured from: 49
to: 337 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 472.5
to: 473.5 [s; relative to TRIGTIME]
Total Fluence
Measured from: -79
to: 497 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.687876 1.980476 0.443249 0.097846
0.207396 0.205026 0.189248 0.197647 [error]
Peak -0.003181 0.009235 0.006618 -0.002023
0.006447 0.006441 0.005790 0.005854 [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 7.91e-07 8.11e-07 5.86e-07 6.79e-07 2.45e-06 2.87e-06 erg/cm2
Error 1.05e-07 1.04e-07 1.48e-07 3.16e-07 3.49e-07 5.37e-07 erg/cm2
Peak flux Power-law 5.16e-02 3.95e-02 2.02e-02 1.49e-02 1.18e-01 1.26e-01 ph/cm2/s
Error 7.20e-02 4.54e-02 3.26e-02 2.18e-01 1.35e-01 2.23e-01 ph/cm2/s
Fluence Cutoff-PL 7.70e-07 9.27e-07 3.76e-07 3.66e-08 2.11e-06 2.11e-06 erg/cm2
Error 1.14e-07 1.35e-07 2.02e-07 1.26e-07 3.37e-07 3.62e-07 erg/cm2
Peak flux Cutoff-PL 3.89e-02 7.17e-02 2.21e-03 1.29e-08 1.13e-01 1.13e-01 ph/cm2/s
Error 6.29e-02 7.52e-02 3.49e-02 9.55e-03 1.16e-01 1.16e-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 2.469 0.237 - - 4.30e-04 8.00e-05 64.040 57
CPL 0.834 1.214 23.2 0.0 5.28e-03 0.00e+00 57.830 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 10.000 0.000 - - 1.31e-07 0.00e+00 49.570 57
CPL -1.826 0.000 38.6 0.0 1.49e-01 0.00e+00 49.450 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 576.000 -79.000 497.000
T90 512.000 -47.000 465.000
T50 288.000 49.000 337.000
Peak 1.000 472.500 473.500
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
130.1838 -45.0156 0.0331 24.4232 63.9003 1.1035358 5.801 TRIG_00559642
Foreground time interval of the image:
-18.499 72.901 (delta_t = 91.400 [sec])
Background time interval of the image:
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 -79.000 sec. to 497.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.46866 ( -0.227462 0.245609 )
Norm@50keV : 4.29517E-04 ( -7.96207e-05 8.03541e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.04 using 59 PHA bins.
# Reduced chi-squared = 1.123 for 57 degrees of freedom
# Null hypothesis probability = 2.433044e-01
Photon flux (15-150 keV) in 576 sec: 8.27833E-02 ( -0.00911929 0.00912247 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.45374e-06 ( -3.41444e-07 3.57371e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -79.000 sec. to 497.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.834449 ( -1.52408 0.90484 )
Epeak [keV] : 23.1826 ( )
Norm@50keV : 5.27575E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.83 using 59 PHA bins.
# Reduced chi-squared = 1.033 for 56 degrees of freedom
# Null hypothesis probability = 4.073935e-01
Photon flux (15-150 keV) in 576 sec: 7.96964E-02 ( -0.0045558 0.009097 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.10547e-06 ( -3.06369e-07 3.67615e-07 ) ergs/cm2
Band function
Time interval is from -79.000 sec. to 497.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -6.69311 -5 )
beta : -2.83996 ( -0.439869 0.342262 )
Epeak [keV] : 21.0075 ( -3.00535 2.53882 )
Norm@50keV : 364.530 ( -39.3644 706.263 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.45 using 59 PHA bins.
# Reduced chi-squared = 1.026 for 55 degrees of freedom
# Null hypothesis probability = 4.205437e-01
Photon flux (15-150 keV) in 576 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] : 6.94852 (-0.827064 0.93523)
R^2/D10^2 : 0.162200 (-0.0663635 0.114963)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.26 using 59 PHA bins.
# Reduced chi-squared = 1.127 for 57 degrees of freedom
# Null hypothesis probability = 2.373659e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.191e-07 1.453e-07
25- 50 9.707e-07 1.662e-07
50-150 1.566e-07 6.621e-08
15-150 1.846e-06 3.050e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 30.2174 (-6.88567 9.80292)
Norm : 0.664922 (-0.14158 0.190571)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.26 using 59 PHA bins.
# Reduced chi-squared = 1.022 for 57 degrees of freedom
# Null hypothesis probability = 4.289217e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.824e-07 1.155e-07
25- 50 8.975e-07 1.325e-07
50-150 4.962e-07 1.903e-07
15-150 2.176e-06 3.522e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.41139 (-1.51 1.6812)
R1^2/D10^2 : 0.682386 (-0.454552 2.82478)
kT2 [keV] : 10.9004 (-8.0057 8.00486)
R2^2/D10^2 : 1.59312E-02 (-0.0148117 0.0633068)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.65 using 59 PHA bins.
# Reduced chi-squared = 1.030 for 55 degrees of freedom
# Null hypothesis probability = 4.130856e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.907e-07 4.188e-07
25- 50 9.021e-07 4.654e-07
50-150 4.292e-07 2.581e-07
15-150 2.122e-06 1.057e-06
Peak spectrum fit
Power-law model
Time interval is from 472.500 sec. to 473.500 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 10.0000 ( )
Norm@50keV : 1.30612E-07 ( -1.30618e-07 -1.30618e-07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.57 using 59 PHA bins.
# Reduced chi-squared = 0.8697 for 57 degrees of freedom
# Null hypothesis probability = 7.470904e-01
Photon flux (15-150 keV) in 1 sec: 0.118127 ( -0.118127 0.15239 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.36185e-09 ( -7.36184e-09 1.30022e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 472.500 sec. to 473.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.82639 ( )
Epeak [keV] : 38.6047 ( -42.4857 -42.4857 )
Norm@50keV : 0.149066 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.45 using 59 PHA bins.
# Reduced chi-squared = 0.8831 for 56 degrees of freedom
# Null hypothesis probability = 7.193950e-01
Photon flux (15-150 keV) in 1 sec: 0.112785 ( -0.112785 0.119275 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.27245e-17 ( 0 0 ) ergs/cm2
Band function
Time interval is from 472.500 sec. to 473.500 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.74699 ( -4.74699 -4.74699 )
beta : -9.19736 ( 9.19736 9.19736 )
Epeak [keV] : 42.5051 ( )
Norm@50keV : 3.74802 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.57 using 59 PHA bins.
# Reduced chi-squared = 0.9013 for 55 degrees of freedom
# Null hypothesis probability = 6.813811e-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] : 0.941224 (-9.80174 -9.80174)
R^2/D10^2 : 7.48900E+05 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.02 using 59 PHA bins.
# Reduced chi-squared = 0.8599 for 57 degrees of freedom
# Null hypothesis probability = 7.650569e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.301e-09 1.172e-09
25- 50 3.145e-09 2.509e-09
50-150 1.548e-09 1.785e-09
15-150 5.994e-09 5.070e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 1.17503 (-66.9933 -66.9933)
Norm : 2.23283E+05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.99 using 59 PHA bins.
# Reduced chi-squared = 0.8595 for 57 degrees of freedom
# Null hypothesis probability = 7.658863e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.572e-09 1.160e-09
25- 50 2.452e-09 2.242e-09
50-150 2.980e-09 4.048e-09
15-150 7.004e-09 7.830e-09
Double BB
R1^2/D10^2 : 8.91497E+08 ( )
kT2 [keV] : 12.5464 (-12.511 -12.511)
R2^2/D10^2 : 2.25898E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.69 using 59 PHA bins.
#Fit statistic : Chi-Squared = 47.47 using 59 PHA bins.
#Fit statistic : Chi-Squared = 47.39 using 59 PHA bins.
# Reduced chi-squared = 0.8672 for 55 degrees of freedom
# Reduced chi-squared = 0.8631 for 55 degrees of freedom
# Reduced chi-squared = 0.8617 for 55 degrees of freedom
# Null hypothesis probability = 7.472054e-01
# Null hypothesis probability = 7.546533e-01
# Null hypothesis probability = 7.571440e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.196e-09 6.505e-10
25- 50 2.496e-09 2.018e-09
50-150 2.472e-09 3.735e-09
15-150 6.165e-09 4.285e-09
Plot creation:
Wed Jul 3 08:38:52 EDT 2013