batgrbproduct Analysis for Trigger=571067
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 Sep 18 02:45:15 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger571067/GCN5_download_cron
======================================================================
Trigger: 00571067 Segment: 000
BAT Trigger Time: 401121688 [s; MET]
Trigger Stop: 401122136 [s; MET]
UTC: 2013-09-17T14:41:16.956680 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 250.431916298687 Dec: -45.5685152025817 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 7.26
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.26
Flight Position: [ source = BAT ]
RA: 250.431916298687 Dec: -45.5685152025817 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 250.473037833231 Dec: -45.55198076509 [deg; J2000]
{ 16h 41m 53.5s , -45d 33' 07.1" }
+/- 3.81952311688399 [arcmin] (estimated 90% radius based on SNR)
+/- 2.62536908303392 [arcmin] (formal 1-sigma fit error)
SNR: 4.48411505496854
Angular difference between Flight and Ground position is 1.992094 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 448 +/-
Measured from: 0
to: 448 [s; relative to TRIGTIME]
T50: 448 +/-
Measured from: 0
to: 448 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 448 second)
Measured from: 0
to: 448 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 448 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.012240 0.663441 -0.021775 0.111671
0.124862 0.107804 0.091284 0.082907 [error]
Peak 1.012240 0.663441 -0.021775 0.111671
0.124862 0.107804 0.091284 0.082907 [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 3.21e-07 2.33e-07 1.13e-07 7.70e-08 7.03e-07 7.44e-07 erg/cm2
Error 5.74e-08 5.39e-08 5.43e-08 6.79e-08 1.45e-07 1.78e-07 erg/cm2
Peak flux Power-law 2.39e-02 9.80e-03 2.37e-03 6.95e-04 3.65e-02 3.68e-02 ph/cm2/s
Error 4.38e-03 2.16e-03 1.10e-03 5.75e-04 5.92e-03 6.00e-03 ph/cm2/s
Fluence Cutoff-PL 3.22e-07 2.57e-07 3.03e-08 1.96e-10 6.09e-07 6.09e-07 erg/cm2
Error 6.23e-08 7.00e-08 5.41e-08 1.31e-08 1.21e-07 1.21e-07 erg/cm2
Peak flux Cutoff-PL 2.35e-02 1.11e-02 7.20e-04 2.52e-06 3.53e-02 3.53e-02 ph/cm2/s
Error 4.75e-03 2.79e-03 1.17e-03 1.40e-04 5.76e-03 5.79e-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 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 3.051 0.426 - - 1.28e-04 4.64e-05 51.730 57
CPL 0.617 0.000 16.0 0.0 7.15e-03 0.00e+00 47.840 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 3.051 0.426 - - 1.28e-04 4.64e-05 51.730 57
CPL 0.617 0.000 16.0 0.0 7.15e-03 0.00e+00 47.840 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 448.000 0.000 448.000
T90 448.000 0.000 448.000
T50 448.000 0.000 448.000
Peak 448.000 0.000 448.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
250.4730 -45.5520 0.0427 5.9 141.3 1.6718 4.5 TRIG_00571067
------------------------------------------
Foreground time interval of the image:
0.000 226.910 (delta_t = 226.910 [sec])
228.000 448.000 (delta_t = 220.000 [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 226.910000
228.000000 448.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.05085 ( -0.393273 0.458021 )
Norm@50keV : 1.27917E-04 ( -4.42697e-05 4.84576e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.73 using 59 PHA bins.
# Reduced chi-squared = 0.9075 for 57 degrees of freedom
# Null hypothesis probability = 6.726287e-01
Photon flux (15-150 keV) in 446.9 sec: 3.65113E-02 ( -0.00591709 0.00592404 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.03407e-07 ( -1.39749e-07 1.50073e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 226.910000
228.000000 448.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.616757 ( )
Epeak [keV] : 15.9648 ( )
Norm@50keV : 7.14585E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.84 using 59 PHA bins.
# Reduced chi-squared = 0.8543 for 56 degrees of freedom
# Null hypothesis probability = 7.728347e-01
Photon flux (15-150 keV) in 446.9 sec: 3.53072E-02 ( -0.0057793 0.0057496 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.09107e-07 ( -1.12418e-07 1.29579e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 226.910000
228.000000 448.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.226751 ( -1.59062 0.349888 )
beta : -9.99739 ( 9.99739 19.9951 )
Epeak [keV] : 17.5499 ( -6.50156 5.58023 )
Norm@50keV : 1.36957E-02 ( -0.0136957 49.8424 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.72 using 59 PHA bins.
# Reduced chi-squared = 0.8677 for 55 degrees of freedom
# Null hypothesis probability = 7.462487e-01
Photon flux (15-150 keV) in 446.9 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] : 5.41746 (-0.806135 0.931671)
R^2/D10^2 : 0.214906 (-0.111207 0.243004)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.18 using 59 PHA bins.
# Reduced chi-squared = 0.8452 for 57 degrees of freedom
# Null hypothesis probability = 7.910141e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.185e-07 9.751e-08
25- 50 2.522e-07 8.909e-08
50-150 1.490e-08 1.004e-08
15-150 5.857e-07 1.682e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 17.1628 (-4.71271 6.88858)
Norm : 0.540361 (-0.190183 0.300485)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.36 using 59 PHA bins.
# Reduced chi-squared = 0.8484 for 57 degrees of freedom
# Null hypothesis probability = 7.854804e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.250e-07 8.102e-08
25- 50 2.509e-07 7.208e-08
50-150 5.738e-08 3.678e-08
15-150 6.333e-07 1.700e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 199.317 ( )
R1^2/D10^2 : 8.19524E-07 (-8.1918e-07 0.000294417)
kT2 [keV] : 5.34630 (-0.802274 0.933589)
R2^2/D10^2 : 0.226588 (-0.117875 0.259246)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.75 using 59 PHA bins.
#Fit statistic : Chi-Squared = 47.68 using 59 PHA bins.
# Reduced chi-squared = 0.8681 for 55 degrees of freedom
# Reduced chi-squared = 0.8669 for 55 degrees of freedom
# Null hypothesis probability = 7.454857e-01
# Null hypothesis probability = 7.476528e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.229e-07 3.193e-07
25- 50 2.543e-07 3.577e-07
50-150 3.404e-08 5.081e-08
15-150 6.112e-07 6.252e-07
Peak spectrum fit
Power-law model
Time interval is from 228.000 sec. to 448.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.05085 ( -0.393273 0.458021 )
Norm@50keV : 1.27917E-04 ( -4.42697e-05 4.84576e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.73 using 59 PHA bins.
# Reduced chi-squared = 0.9075 for 57 degrees of freedom
# Null hypothesis probability = 6.726287e-01
Photon flux (15-150 keV) in 446.9 sec: 3.65113E-02 ( -0.00591709 0.00592404 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.03407e-07 ( -1.39749e-07 1.50073e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 228.000 sec. to 448.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.616757 ( )
Epeak [keV] : 15.9648 ( )
Norm@50keV : 7.14585E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.84 using 59 PHA bins.
# Reduced chi-squared = 0.8543 for 56 degrees of freedom
# Null hypothesis probability = 7.728347e-01
Photon flux (15-150 keV) in 446.9 sec: 3.53072E-02 ( -0.0057793 0.0057496 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.09107e-07 ( -1.12418e-07 1.29579e-07 ) ergs/cm2
Band function
Time interval is from 228.000 sec. to 448.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -4.27771E-02 ( -1.30189 0.42913 )
beta : -9.99965 ( 9.99965 0.000447204 )
Epeak [keV] : 18.1248 ( -5.76486 4.70783 )
Norm@50keV : 1.86705E-02 ( -0.00294941 46.1451 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.70 using 59 PHA bins.
# Reduced chi-squared = 0.8672 for 55 degrees of freedom
# Null hypothesis probability = 7.470962e-01
Photon flux (15-150 keV) in 446.9 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] : 5.41746 (-0.806135 0.931671)
R^2/D10^2 : 0.214906 (-0.111207 0.243004)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.18 using 59 PHA bins.
# Reduced chi-squared = 0.8452 for 57 degrees of freedom
# Null hypothesis probability = 7.910141e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.185e-07 1.119e-07
25- 50 2.522e-07 9.354e-08
50-150 1.490e-08 1.066e-08
15-150 5.857e-07 1.707e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 17.1628 (-4.71271 6.88858)
Norm : 0.540361 (-0.190183 0.300485)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.36 using 59 PHA bins.
# Reduced chi-squared = 0.8484 for 57 degrees of freedom
# Null hypothesis probability = 7.854804e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.250e-07 7.387e-08
25- 50 2.509e-07 8.346e-08
50-150 5.738e-08 3.715e-08
15-150 6.333e-07 1.492e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 199.317 ( )
R1^2/D10^2 : 8.19524E-07 (-8.1918e-07 0.000294417)
kT2 [keV] : 5.34630 (-0.802274 0.933589)
R2^2/D10^2 : 0.226588 (-0.117875 0.259246)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.75 using 59 PHA bins.
#Fit statistic : Chi-Squared = 47.68 using 59 PHA bins.
# Reduced chi-squared = 0.8681 for 55 degrees of freedom
# Reduced chi-squared = 0.8669 for 55 degrees of freedom
# Null hypothesis probability = 7.454857e-01
# Null hypothesis probability = 7.476528e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.229e-07 3.280e-07
25- 50 2.543e-07 3.278e-07
50-150 3.404e-08 5.495e-08
15-150 6.112e-07 5.731e-07
Plot creation:
Wed Sep 18 03:21:38 EDT 2013