batgrbproduct Analysis for Trigger=723539
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 15 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Thu Nov 24 09:29:24 EST 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger723539/GCN5_download_cron
======================================================================
Trigger: 00723539 Segment: 000
BAT Trigger Time: 501600894.72 [s; MET]
Trigger Stop: 501600898.816 [s; MET]
UTC: 2016-11-23T13:34:37.517440 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 299.566328401138 Dec: 35.1950808366367 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.95
Image Trigger?: NO
Rate S/N Ratio: 11.4455231422596 [ if not an image trigger ]
Image S/N Ratio: 5.95
Flight Position: [ source = BAT ]
RA: 299.566328401138 Dec: 35.1950808366367 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 299.737919205564 Dec: 35.2024623552605 [deg; J2000]
{ 19h 58m 57.1s , +35d 12' 08.9" }
+/- 4.34354149104387 [arcmin] (estimated 90% radius based on SNR)
+/- 2.5947029071616 [arcmin] (formal 1-sigma fit error)
SNR: 3.7317513815106
Angular difference between Flight and Ground position is 8.424649 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 405.827999949455 +/- 48.0107496530332
Measured from: 8.12400007247925
to: 413.952000021935 [s; relative to TRIGTIME]
T50: 177.847999989986 +/- 50.4284063601156
Measured from: 170.004000067711
to: 347.852000057697 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.44799995422363
to: 3.44799995422363 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.40800005197525
to: 425.611999988556 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.841537 5.081268 3.184882 0.775833
0.122949 0.125194 0.106230 0.090564 [error]
Peak 0.029088 0.034744 0.028100 0.006649
0.006167 0.006286 0.005271 0.004222 [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 1.19e-06 1.95e-06 2.42e-06 5.94e-06 7.22e-06 1.15e-05 erg/cm2
Error 7.09e-08 6.69e-08 1.08e-07 5.88e-07 2.52e-07 6.59e-07 erg/cm2
Peak flux Power-law 2.46e-01 2.41e-01 1.65e-01 1.77e-01 7.22e-01 8.28e-01 ph/cm2/s
Error 7.39e-02 4.66e-02 4.18e-02 9.01e-02 1.36e-01 1.60e-01 ph/cm2/s
Fluence Cutoff-PL 1.14e-06 1.98e-06 2.44e-06 4.27e-06 7.08e-06 9.83e-06 erg/cm2
Error 8.67e-08 7.72e-08 1.12e-07 1.40e-06 2.99e-07 1.39e-06 erg/cm2
Peak flux Cutoff-PL 2.37e-01 2.50e-01 1.67e-01 1.17e-01 7.15e-01 7.71e-01 ph/cm2/s
Error 8.13e-02 5.77e-02 4.50e-02 1.03e-01 1.38e-01 1.93e-01 ph/cm2/s
Fluence Band 1.05e-06 2.03e-06 2.37e-06 5.35e-06 7.04e-06 1.08e-05 erg/cm2
Error 7.66e-08 -------- 1.12e-07 -------- 2.71e-07 -------- erg/cm2
Peak flux Band -------- -------- -------- -------- -------- -------- ph/cm2/s
Error -------- -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.688 0.063 - - 1.83e-03 6.08e-05 77.110 57
CPL 1.476 0.243 122.1 -40.4 2.34e-03 6.51e-04 74.810 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.548 0.325 - - 5.71e-03 1.14e-03 49.870 57
CPL 1.241 1.035 114.4 0.0 8.39e-03 2.43e-02 49.670 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 426.020 -0.408 425.612
T90 405.828 8.124 413.952
T50 177.848 170.004 347.852
Peak 1.000 2.448 3.448
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.7379 +35.2025 0.0514 9.6 -118.7 0.2951 3.7 TRIG_00723539
------------------------------------------
Foreground time interval of the image:
-0.408 48.281 (delta_t = 48.689 [sec])
Background time interval of the image:
-224.419 -0.408 (delta_t = 224.011 [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
Multiple GTIs in the spectrum
tstart tstop
-0.408000 285.480000
286.280000 425.612000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.68821 ( -0.0624478 0.0626967 )
Norm@50keV : 1.83332E-03 ( -6.08773e-05 6.07505e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.11 using 59 PHA bins.
# Reduced chi-squared = 1.353 for 57 degrees of freedom
# Null hypothesis probability = 3.924441e-02
Photon flux (15-150 keV) in 425.2 sec: 0.242491 ( -0.00838028 0.00840358 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.22445e-06 ( -2.51624e-07 2.52453e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-0.408000 285.480000
286.280000 425.612000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47559 ( -0.253155 0.233475 )
Epeak [keV] : 122.123 ( -41.2868 -122.146 )
Norm@50keV : 2.34232E-03 ( -0.000530017 0.000771702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.81 using 59 PHA bins.
# Reduced chi-squared = 1.336 for 56 degrees of freedom
# Null hypothesis probability = 4.728940e-02
Photon flux (15-150 keV) in 425.2 sec: 0.238759 ( -0.009293 0.009312 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.0829e-06 ( -2.99426e-07 2.9832e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-0.408000 285.480000
286.280000 425.612000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.54798 ( -3.702 -2.73576 )
beta : -1.77705 ( -0.0857861 0.081534 )
Epeak [keV] : 30.0269 ( -3.87087 23.5445 )
Norm@50keV : 0.350067 ( -0.348417 64.5038 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.93 using 59 PHA bins.
# Reduced chi-squared = 1.235 for 55 degrees of freedom
# Null hypothesis probability = 1.131313e-01
Photon flux (15-150 keV) in 425.2 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 7.04118e-06 ( -7.03821e-06 -2.7047e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.6451 ( )
R^2/D10^2 : 3.51764E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 279.45 using 59 PHA bins.
# Reduced chi-squared = 4.9026 for 57 degrees of freedom
# Null hypothesis probability = 4.459781e-31
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.895e-07 4.103e-08
25- 50 2.136e-06 9.163e-08
50-150 2.584e-06 1.805e-07
15-150 5.310e-06 1.935e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 146.385 (-24.268 26.0606)
Norm : 0.985321 (-0.0389973 0.0493685)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.31 using 59 PHA bins.
# Reduced chi-squared = 1.339 for 57 degrees of freedom
# Null hypothesis probability = 4.475078e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.078e-06 6.399e-08
25- 50 1.991e-06 1.225e-07
50-150 3.891e-06 9.720e-07
15-150 6.961e-06 1.084e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.23708 (-0.723215 0.771211)
R1^2/D10^2 : 0.249649 (-0.0722234 0.110822)
kT2 [keV] : 26.9384 (-3.36565 4.77427)
R2^2/D10^2 : 2.31126E-03 (-0.00100805 0.00147523)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.27 using 59 PHA bins.
# Reduced chi-squared = 1.296 for 55 degrees of freedom
# Null hypothesis probability = 6.909178e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.042e-06 1.106e-07
25- 50 2.047e-06 1.484e-07
50-150 3.963e-06 5.083e-07
15-150 7.052e-06 6.314e-07
Peak spectrum fit
Power-law model
Time interval is from 2.448 sec. to 3.448 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.54758 ( -0.320683 0.328433 )
Norm@50keV : 5.70753E-03 ( -0.00115334 0.00113096 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.87 using 59 PHA bins.
# Reduced chi-squared = 0.8749 for 57 degrees of freedom
# Null hypothesis probability = 7.371308e-01
Photon flux (15-150 keV) in 1 sec: 0.722032 ( -0.136204 0.136293 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.37502e-08 ( -1.16502e-08 1.19269e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 2.448 sec. to 3.448 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.24056 ( -1.4515 0.61867 )
Epeak [keV] : 114.370 ( -114.372 -114.372 )
Norm@50keV : 8.39258E-03 ( -0.00469942 0.0439589 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.67 using 59 PHA bins.
# Reduced chi-squared = 0.8869 for 56 degrees of freedom
# Null hypothesis probability = 7.119468e-01
Photon flux (15-150 keV) in 1 sec: 0.715054 ( -0.138878 0.137404 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.22332e-08 ( -1.31025e-08 1.30002e-08 ) ergs/cm2
Band function
Time interval is from 2.448 sec. to 3.448 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.66062 ( -4.66062 -4.66062 )
beta : -1.78595 ( -0.526681 0.415073 )
Epeak [keV] : 27.8183 ( -10.8363 7.50099 )
Norm@50keV : 202.374 ( -37.5446 3.53819e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.37 using 59 PHA bins.
# Reduced chi-squared = 0.8795 for 55 degrees of freedom
# Null hypothesis probability = 7.240703e-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] : 12.7553 (-2.95731 4.20838)
R^2/D10^2 : 0.143832 (-0.0914961 0.22782)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.82 using 59 PHA bins.
# Reduced chi-squared = 0.9969 for 57 degrees of freedom
# Null hypothesis probability = 4.817043e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.963e-09 1.744e-09
25- 50 1.674e-08 5.399e-09
50-150 1.703e-08 7.287e-09
15-150 3.874e-08 1.412e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 195.090 (-114.199 -194.332)
Norm : 2.95567 (-0.556111 0.691703)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.64 using 59 PHA bins.
# Reduced chi-squared = 0.8710 for 57 degrees of freedom
# Null hypothesis probability = 7.446619e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.381e-09 4.323e-09
25- 50 1.416e-08 8.100e-09
50-150 3.083e-08 1.716e-08
15-150 5.238e-08 2.897e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.13385 (-2.65321 3.80159)
R1^2/D10^2 : 0.814639 (-0.606921 3.23528)
kT2 [keV] : 29.0035 (-24.5162 170.133)
R2^2/D10^2 : 6.05385E-03 (-0.0059589 0.0404048)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.48 using 59 PHA bins.
# Reduced chi-squared = 0.8815 for 55 degrees of freedom
# Null hypothesis probability = 7.202506e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.603e-09 4.409e-09
25- 50 1.459e-08 7.730e-09
50-150 3.147e-08 1.863e-08
15-150 5.366e-08 2.786e-08
Plot creation:
Thu Nov 24 09:35:34 EST 2016