batgrbproduct Analysis for Trigger=572489
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): Tue Oct 1 17:26:44 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger572489/GCN5_download_cron
======================================================================
Trigger: 00572489 Segment: 000
BAT Trigger Time: 402260984 [s; MET]
Trigger Stop: 402261360 [s; MET]
UTC: 2013-09-30T19:09:32.904720 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 190.660904661931 Dec: -35.5024551831994 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 7.62
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.62
Flight Position: [ source = BAT ]
RA: 190.660904661931 Dec: -35.5024551831994 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 190.594534244593 Dec: -35.5582262869069 [deg; J2000]
{ 12h 42m 22.7s , -35d 33' 29.6" }
+/- 3.81357590758564 [arcmin] (estimated 90% radius based on SNR)
+/- 3.47295435619244 [arcmin] (formal 1-sigma fit error)
SNR: 4.49410825539685
Angular difference between Flight and Ground position is 4.658332 arcmin
Partial Coding Fraction: 0.8671875 [ including projection effects ]
Duration
T90: 376 +/-
Measured from: 0
to: 376 [s; relative to TRIGTIME]
T50: 376 +/-
Measured from: 0
to: 376 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 376 second)
Measured from: 0
to: 376 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 376 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.597286 0.645436 0.360595 -0.093364
0.108397 0.108052 0.093463 0.082265 [error]
Peak 0.597286 0.645436 0.360595 -0.093364
0.108397 0.108052 0.093463 0.082265 [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 1.84e-07 2.58e-07 2.69e-07 5.16e-07 8.74e-07 1.23e-06 erg/cm2
Error 4.48e-08 4.75e-08 8.41e-08 3.16e-07 1.97e-07 4.13e-07 erg/cm2
Peak flux Power-law 1.59e-02 1.24e-02 6.45e-03 4.86e-03 3.70e-02 3.96e-02 ph/cm2/s
Error 3.97e-03 2.25e-03 1.95e-03 2.77e-03 6.70e-03 7.37e-03 ph/cm2/s
Fluence Cutoff-PL 1.68e-07 2.96e-07 2.58e-07 1.05e-07 7.97e-07 8.26e-07 erg/cm2
Error 5.00e-08 6.49e-08 1.03e-07 3.19e-07 2.02e-07 3.93e-07 erg/cm2
Peak flux Cutoff-PL 1.44e-02 1.41e-02 6.35e-03 1.33e-03 3.59e-02 3.61e-02 ph/cm2/s
Error 4.44e-03 3.03e-03 2.36e-03 1.83e-03 6.75e-03 7.15e-03 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 1.53e-02 3.75e-02 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 1.940 0.331 - - 2.53e-04 5.86e-05 63.260 57
CPL 0.841 1.483 44.0 0.0 1.09e-03 6.05e-03 60.970 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.940 0.331 - - 2.53e-04 5.86e-05 63.260 57
CPL 0.841 1.483 44.0 0.0 1.09e-03 6.05e-03 60.970 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 376.000 0.000 376.000
T90 376.000 0.000 376.000
T50 376.000 0.000 376.000
Peak 376.000 0.000 376.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
190.5945 -35.5582 0.0429 14.6 -84.6 1.2430 4.5 TRIG_00572489
------------------------------------------
Foreground time interval of the image:
0.000 299.000 (delta_t = 299.000 [sec])
300.000 376.000 (delta_t = 76.000 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 299.000000
300.000000 376.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.93998 ( -0.314737 0.346388 )
Norm@50keV : 2.53317E-04 ( -5.94906e-05 5.76536e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.26 using 59 PHA bins.
# Reduced chi-squared = 1.110 for 57 degrees of freedom
# Null hypothesis probability = 2.649774e-01
Photon flux (15-150 keV) in 375 sec: 3.69865E-02 ( -0.00670084 0.00670085 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.73979e-07 ( -1.92511e-07 2.01131e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 299.000000
300.000000 376.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.841351 ( -1.74267 1.22428 )
Epeak [keV] : 44.0005 ( -44.0005 -44.0005 )
Norm@50keV : 1.09482E-03 ( -0.00109482 0.0110102 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.97 using 59 PHA bins.
# Reduced chi-squared = 1.089 for 56 degrees of freedom
# Null hypothesis probability = 3.019341e-01
Photon flux (15-150 keV) in 375 sec: 3.58578E-02 ( -0.0067286 0.0067703 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.96594e-07 ( -1.91017e-07 2.13829e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 299.000000
300.000000 376.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.833822 ( -2.56682 2.54043 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 43.7816 ( -29.7513 -43.8093 )
Norm@50keV : 1.11133E-03 ( -0.00110951 0.0109905 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.97 using 59 PHA bins.
# Reduced chi-squared = 1.109 for 55 degrees of freedom
# Null hypothesis probability = 2.700053e-01
Photon flux (15-150 keV) in 375 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] : 10.1469 (-2.03128 2.60357)
R^2/D10^2 : 1.67850E-02 (-0.00967136 0.0222369)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.53 using 59 PHA bins.
# Reduced chi-squared = 1.150 for 57 degrees of freedom
# Null hypothesis probability = 2.050486e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.326e-07 4.189e-08
25- 50 3.366e-07 1.018e-07
50-150 1.832e-07 8.732e-08
15-150 6.524e-07 1.770e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 70.1266 (-28.7769 70.5735)
Norm : 0.184034 (-0.044285 0.0601062)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.31 using 59 PHA bins.
# Reduced chi-squared = 1.076 for 57 degrees of freedom
# Null hypothesis probability = 3.241519e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.771e-07 4.562e-08
25- 50 2.819e-07 9.495e-08
50-150 3.626e-07 2.347e-07
15-150 8.215e-07 2.835e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.76257 (-2.96256 3.3617)
R1^2/D10^2 : 8.70701E-02 (-0.0699189 1.76697)
kT2 [keV] : 17.2100 (-14.272 16.2668)
R2^2/D10^2 : 1.58444E-03 (-0.00158332 0.00954363)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.31 using 59 PHA bins.
# Reduced chi-squared = 1.097 for 55 degrees of freedom
# Null hypothesis probability = 2.897926e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.713e-07 1.024e-07
25- 50 2.833e-07 1.459e-07
50-150 3.483e-07 2.164e-07
15-150 8.030e-07 4.313e-07
Peak spectrum fit
Power-law model
Time interval is from 300.000 sec. to 376.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.93998 ( -0.314737 0.346388 )
Norm@50keV : 2.53317E-04 ( -5.94906e-05 5.76536e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.26 using 59 PHA bins.
# Reduced chi-squared = 1.110 for 57 degrees of freedom
# Null hypothesis probability = 2.649774e-01
Photon flux (15-150 keV) in 375 sec: 3.69865E-02 ( -0.00670084 0.00670085 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.73979e-07 ( -1.92511e-07 2.01131e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 300.000 sec. to 376.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.841351 ( -1.74267 1.22428 )
Epeak [keV] : 44.0005 ( -44.0005 -44.0005 )
Norm@50keV : 1.09482E-03 ( -0.00109482 0.0110102 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.97 using 59 PHA bins.
# Reduced chi-squared = 1.089 for 56 degrees of freedom
# Null hypothesis probability = 3.019341e-01
Photon flux (15-150 keV) in 375 sec: 3.58578E-02 ( -0.0067286 0.0067703 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.96594e-07 ( -1.91017e-07 2.13829e-07 ) ergs/cm2
Band function
Time interval is from 300.000 sec. to 376.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.833822 ( -2.56682 2.54043 )
beta : -10.0000 ( 10 1.77636e-15 )
Epeak [keV] : 43.7816 ( -29.7513 -43.8093 )
Norm@50keV : 1.11133E-03 ( -0.00110951 0.0109905 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.97 using 59 PHA bins.
# Reduced chi-squared = 1.109 for 55 degrees of freedom
# Null hypothesis probability = 2.700053e-01
Photon flux (15-150 keV) in 375 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] : 10.1469 (-2.03128 2.60357)
R^2/D10^2 : 1.67850E-02 (-0.00967136 0.0222369)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.53 using 59 PHA bins.
# Reduced chi-squared = 1.150 for 57 degrees of freedom
# Null hypothesis probability = 2.050486e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.326e-07 4.121e-08
25- 50 3.366e-07 1.015e-07
50-150 1.832e-07 8.477e-08
15-150 6.524e-07 1.835e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 70.1266 (-28.7769 70.5735)
Norm : 0.184034 (-0.044285 0.0601062)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.31 using 59 PHA bins.
# Reduced chi-squared = 1.076 for 57 degrees of freedom
# Null hypothesis probability = 3.241519e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.771e-07 4.054e-08
25- 50 2.819e-07 7.267e-08
50-150 3.626e-07 2.525e-07
15-150 8.215e-07 3.154e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.76257 (-2.96256 3.3617)
R1^2/D10^2 : 8.70701E-02 (-0.0699189 1.76697)
kT2 [keV] : 17.2100 (-14.272 16.2668)
R2^2/D10^2 : 1.58444E-03 (-0.00158332 0.00954363)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.31 using 59 PHA bins.
# Reduced chi-squared = 1.097 for 55 degrees of freedom
# Null hypothesis probability = 2.897926e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.713e-07 9.924e-08
25- 50 2.833e-07 1.480e-07
50-150 3.483e-07 2.001e-07
15-150 8.030e-07 4.176e-07
Plot creation:
Tue Oct 1 17:45:41 EDT 2013