batgrbproduct Analysis for Trigger=570069
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 Sep 9 11:00:10 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger570069/GCN5_download_cron
======================================================================
Trigger: 00570069 Segment: 000
BAT Trigger Time: 400351200 [s; MET]
Trigger Stop: 400351272 [s; MET]
UTC: 2013-09-08T16:39:48.991660 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 326.151034648764 Dec: 38.3147256751423 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.61
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 6.61
Flight Position: [ source = BAT ]
RA: 326.151034648764 Dec: 38.3147256751423 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 326.134275363259 Dec: 38.3570797600575 [deg; J2000]
{ 21h 44m 32.2s , +38d 21' 25.5" }
+/- 3.79674804205258 [arcmin] (estimated 90% radius based on SNR)
+/- 2.04699519085187 [arcmin] (formal 1-sigma fit error)
SNR: 4.52259053032812
Angular difference between Flight and Ground position is 2.660836 arcmin
Partial Coding Fraction: 0.8671875 [ including projection effects ]
Duration
T90: 72 +/-
Measured from: 0
to: 72 [s; relative to TRIGTIME]
T50: 72 +/-
Measured from: 0
to: 72 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 72 second)
Measured from: 0
to: 72 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 72 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.277050 0.139829 -0.008590 -0.023321
0.042907 0.043700 0.037904 0.032623 [error]
Peak 0.277050 0.139829 -0.008590 -0.023321
0.042907 0.043700 0.037904 0.032623 [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 8.58e-08 5.40e-08 2.19e-08 1.20e-08 1.68e-07 1.74e-07 erg/cm2
Error 2.11e-08 2.21e-08 1.84e-08 2.05e-08 5.53e-08 6.44e-08 erg/cm2
Peak flux Power-law 3.99e-02 1.42e-02 2.88e-03 6.91e-04 5.75e-02 5.77e-02 ph/cm2/s
Error 9.95e-03 5.53e-03 2.35e-03 1.10e-03 1.43e-02 1.45e-02 ph/cm2/s
Fluence Cutoff-PL 8.91e-08 6.11e-08 1.90e-09 2.18e-13 1.52e-07 1.52e-07 erg/cm2
Error 2.32e-08 2.87e-08 1.04e-08 1.36e-09 4.08e-08 4.08e-08 erg/cm2
Peak flux Cutoff-PL 4.00e-02 1.70e-02 2.97e-04 1.80e-08 5.73e-02 5.73e-02 ph/cm2/s
Error 1.11e-02 7.38e-03 1.43e-03 9.62e-05 1.35e-02 1.02e-02 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 3.303 0.718 - - 1.66e-04 1.07e-04 71.840 57
CPL 1.000 0.000 50.0 0.0 1.04e-03 0.00e+00 91.180 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 3.303 0.718 - - 1.66e-04 1.07e-04 71.840 57
CPL 1.000 0.000 50.0 0.0 1.04e-03 0.00e+00 91.180 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 72.000 0.000 72.000
T90 72.000 0.000 72.000
T50 72.000 0.000 72.000
Peak 72.000 0.000 72.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
326.1343 +38.3571 0.0423 28.3 -157.3 0.3695 4.5 TRIG_00570069
------------------------------------------
Foreground time interval of the image:
0.000 72.000 (delta_t = 72.000 [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
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.30312 ( -0.610275 0.825694 )
Norm@50keV : 1.66214E-04 ( -9.4745e-05 0.000118533 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.84 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 57 degrees of freedom
# Null hypothesis probability = 8.911518e-02
Photon flux (15-150 keV) in 72 sec: 5.74638E-02 ( -0.014203 0.0143553 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.67799e-07 ( -5.15156e-08 5.90908e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.03827E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 91.18 using 59 PHA bins.
# Reduced chi-squared = 1.628 for 56 degrees of freedom
# Null hypothesis probability = 2.066786e-03
Photon flux (15-150 keV) in 72 sec: 5.72838E-02 ( -0.013501 0.01358 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.52472e-07 ( -3.91536e-08 4.24001e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.44020 ( -6.63827 -4.4402 )
beta : -9.97755 ( 9.97755 19.9254 )
Epeak [keV] : 22.1381 ( -3.80005 3.53577 )
Norm@50keV : 78.9158 ( -18.0612 692.832 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.14 using 59 PHA bins.
# Reduced chi-squared = 1.239 for 55 degrees of freedom
# Null hypothesis probability = 1.098815e-01
Photon flux (15-150 keV) in 72 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] : 5.11239 (-1.03452 1.19252)
R^2/D10^2 : 0.467229 (-0.287671 0.88244)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.02 using 59 PHA bins.
# Reduced chi-squared = 1.193 for 57 degrees of freedom
# Null hypothesis probability = 1.505866e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.934e-08 5.238e-08
25- 50 6.162e-08 3.805e-08
50-150 2.787e-09 2.498e-09
15-150 1.538e-07 9.029e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.3888 (-5.28484 8.66178)
Norm : 1.11810 (-0.522529 1.15057)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.44 using 59 PHA bins.
# Reduced chi-squared = 1.218 for 57 degrees of freedom
# Null hypothesis probability = 1.248661e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.898e-08 4.188e-08
25- 50 5.820e-08 3.449e-08
50-150 9.415e-09 9.330e-09
15-150 1.566e-07 7.953e-08
Double BB
R1^2/D10^2 : 1.19074E+06 ( )
kT2 [keV] : 5.51158 (-1.219 1.41342)
R2^2/D10^2 : 0.308785 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.03 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.15 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.11 using 59 PHA bins.
# Reduced chi-squared = 1.237 for 55 degrees of freedom
# Reduced chi-squared = 1.203 for 55 degrees of freedom
# Reduced chi-squared = 1.202 for 55 degrees of freedom
# Null hypothesis probability = 1.116182e-01
# Null hypothesis probability = 1.442991e-01
# Null hypothesis probability = 1.450144e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.916e-08 9.569e-02
25- 50 6.202e-08 9.763e-01
50-150 2.868e-09 2.442e+01
15-150 1.541e-07 2.313e+01
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.30312 ( -0.610275 0.825694 )
Norm@50keV : 1.66214E-04 ( -9.4745e-05 0.000118533 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.84 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 57 degrees of freedom
# Null hypothesis probability = 8.911518e-02
Photon flux (15-150 keV) in 72 sec: 5.74638E-02 ( -0.014203 0.0143553 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.67799e-07 ( -5.15156e-08 5.90908e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.03827E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 91.18 using 59 PHA bins.
# Reduced chi-squared = 1.628 for 56 degrees of freedom
# Null hypothesis probability = 2.066786e-03
Photon flux (15-150 keV) in 72 sec: 5.72838E-02 ( -0.013501 0.01358 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.52472e-07 ( -3.91536e-08 4.24001e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.44020 ( -6.63827 -4.4402 )
beta : -9.97755 ( 9.97755 19.9254 )
Epeak [keV] : 22.1381 ( -3.80005 3.53577 )
Norm@50keV : 78.9158 ( -18.0612 692.832 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.14 using 59 PHA bins.
# Reduced chi-squared = 1.239 for 55 degrees of freedom
# Null hypothesis probability = 1.098815e-01
Photon flux (15-150 keV) in 72 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] : 5.11239 (-1.03452 1.19252)
R^2/D10^2 : 0.467229 (-0.287671 0.88244)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.02 using 59 PHA bins.
# Reduced chi-squared = 1.193 for 57 degrees of freedom
# Null hypothesis probability = 1.505866e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.934e-08 5.022e-08
25- 50 6.162e-08 3.733e-08
50-150 2.787e-09 2.443e-09
15-150 1.538e-07 8.957e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.3888 (-5.28484 8.66178)
Norm : 1.11810 (-0.522529 1.15057)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.44 using 59 PHA bins.
# Reduced chi-squared = 1.218 for 57 degrees of freedom
# Null hypothesis probability = 1.248661e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.898e-08 4.435e-08
25- 50 5.820e-08 3.493e-08
50-150 9.415e-09 9.356e-09
15-150 1.566e-07 7.897e-08
Double BB
R1^2/D10^2 : 1.19074E+06 ( )
kT2 [keV] : 5.51158 (-1.219 1.41342)
R2^2/D10^2 : 0.308785 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.03 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.15 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.11 using 59 PHA bins.
# Reduced chi-squared = 1.237 for 55 degrees of freedom
# Reduced chi-squared = 1.203 for 55 degrees of freedom
# Reduced chi-squared = 1.202 for 55 degrees of freedom
# Null hypothesis probability = 1.116182e-01
# Null hypothesis probability = 1.442991e-01
# Null hypothesis probability = 1.450144e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.916e-08 1.100e-01
25- 50 6.202e-08 9.788e-01
50-150 2.868e-09 2.423e+01
15-150 1.541e-07 2.418e+01
Plot creation:
Mon Sep 9 11:20:11 EDT 2013