batgrbproduct Analysis for Trigger=722604
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): Fri Nov 18 10:46:54 EST 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger722604/GCN5_download_cron
======================================================================
Trigger: 00722604 Segment: 000
BAT Trigger Time: 501039353.856 [s; MET]
Trigger Stop: 501039354.88 [s; MET]
UTC: 2016-11-17T01:35:36.685460 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 322.070183555621 Dec: -29.629062738768 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 19.39
Image Trigger?: NO
Rate S/N Ratio: 65.5209890035247 [ if not an image trigger ]
Image S/N Ratio: 19.39
Flight Position: [ source = BAT ]
RA: 322.070183555621 Dec: -29.629062738768 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 322.053181152107 Dec: -29.6115113624429 [deg; J2000]
{ 21h 28m 12.8s , -29d 36' 41.4" }
+/- 0.586509605372612 [arcmin] (estimated 90% radius based on SNR)
+/- 0.217616840022432 [arcmin] (formal 1-sigma fit error)
SNR: 65.1859366059862
Angular difference between Flight and Ground position is 1.376755 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 125.699999928474 +/- 1.09562770301324
Measured from: 1.58800011873245
to: 127.288000047207 [s; relative to TRIGTIME]
T50: 74.5359999537468 +/- 0.572097846218805
Measured from: 37.8320001363754
to: 112.368000090122 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 111.339999973774
to: 112.339999973774 [s; relative to TRIGTIME]
Total Fluence
Measured from: -5.99599999189377
to: 154.43599998951 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 11.254858 14.941659 9.354994 1.464556
0.086180 0.092760 0.078978 0.059831 [error]
Peak 0.259578 0.331703 0.209722 0.034934
0.009401 0.010297 0.008401 0.005189 [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 3.98e-06 6.03e-06 6.83e-06 1.47e-05 2.12e-05 3.16e-05 erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Power-law 2.59e+00 2.29e+00 1.39e+00 1.28e+00 6.83e+00 7.56e+00 ph/cm2/s
Error 1.71e-01 9.31e-02 6.93e-02 1.29e-01 2.74e-01 2.87e-01 ph/cm2/s
Fluence Cutoff-PL 3.32e-06 6.14e-06 7.23e-06 7.89e-06 2.05e-05 2.46e-05 erg/cm2
Error 1.59e-07 1.14e-07 1.32e-07 8.33e-07 3.30e-07 9.05e-07 erg/cm2
Peak flux Cutoff-PL 2.30e+00 2.40e+00 1.46e+00 7.11e-01 6.61e+00 6.88e+00 ph/cm2/s
Error 2.10e-01 1.09e-01 7.93e-02 1.93e-01 2.90e-01 3.58e-01 ph/cm2/s
Fluence Band 3.26e-06 6.13e-06 7.20e-06 9.92e-06 2.04e-05 2.66e-05 erg/cm2
Error 1.93e-07 1.30e-07 1.66e-07 -------- 3.30e-07 -------- erg/cm2
Peak flux Band 2.31e+00 2.40e+00 1.46e+00 7.21e-01 6.61e+00 6.89e+00 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 1.820 0.000 - - 1.44e-02 0.00e+00 122.380 57
CPL 1.186 0.122 73.9 4.3 2.71e-02 3.23e-03 34.270 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.718 0.067 - - 5.11e-02 2.01e-03 52.820 57
CPL 1.118 0.292 74.4 16.5 1.02e-01 3.42e-02 38.740 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: 121.920000 sec.
T50 in the 50-300 keV band: 77.184000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 160.432 -5.996 154.436
T90 125.700 1.588 127.288
T50 74.536 37.832 112.368
Peak 1.000 111.340 112.340
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
322.0532 -29.6115 0.0030 12.4 -172.9 4.0966 65.2 TRIG_00722604
------------------------------------------
Foreground time interval of the image:
-5.996 9.545 (delta_t = 15.541 [sec])
Background time interval of the image:
-73.355 -5.996 (delta_t = 67.359 [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
Time interval is from -5.996 sec. to 154.436 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.82005 ( )
Norm@50keV : 1.43962E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 122.38 using 59 PHA bins.
# Reduced chi-squared = 2.1471 for 57 degrees of freedom
# Null hypothesis probability = 1.121530e-06
Photon flux (15-150 keV) in 160.4 sec: 1.99941 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.1245e-05 ( 0 0 ) ergs/cm2
Cutoff power-law model
Time interval is from -5.996 sec. to 154.436 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.18566 ( -0.12367 0.120689 )
Epeak [keV] : 73.8895 ( -3.77338 4.89163 )
Norm@50keV : 2.70930E-02 ( -0.00299846 0.00345412 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 34.27 using 59 PHA bins.
# Reduced chi-squared = 0.6119 for 56 degrees of freedom
# Null hypothesis probability = 9.902901e-01
Photon flux (15-150 keV) in 160.4 sec: 1.86992 ( -0.0422 0.04258 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.04587e-05 ( -3.30103e-07 3.30103e-07 ) ergs/cm2
Band function
Time interval is from -5.996 sec. to 154.436 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.14115 ( -0.153547 0.352421 )
beta : -2.39469 ( 2.39469 0.308493 )
Epeak [keV] : 71.6259 ( -12.5824 6.56576 )
Norm@50keV : 2.85435E-02 ( -0.0041396 0.0156366 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.76 using 59 PHA bins.
# Reduced chi-squared = 0.6138 for 55 degrees of freedom
# Null hypothesis probability = 9.893181e-01
Photon flux (15-150 keV) in 160.4 sec: 1.86413 ( 5.13587 -0.04736 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.04022e-05 ( -2.04011e-05 -3.29943e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 15.9655 ( )
R^2/D10^2 : 0.156649 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 843.05 using 59 PHA bins.
# Reduced chi-squared = 14.790 for 57 degrees of freedom
# Null hypothesis probability = 2.434267e-140
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.325e-06 4.114e-08
25- 50 5.565e-06 1.171e-07
50-150 9.906e-06 2.029e-07
15-150 1.680e-05 2.246e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 120.579 (-5.86762 7.35965)
Norm : 8.22562 (-0.20155 0.186492)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 36.01 using 59 PHA bins.
# Reduced chi-squared = 0.6318 for 57 degrees of freedom
# Null hypothesis probability = 9.865362e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.371e-06 1.428e-07
25- 50 6.071e-06 2.037e-07
50-150 1.104e-05 2.075e-06
15-150 2.048e-05 2.109e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.88085 (-0.470874 0.485178)
R1^2/D10^2 : 1.34069 (-0.245304 0.321423)
kT2 [keV] : 24.4183 (-1.21514 1.42575)
R2^2/D10^2 : 2.36841E-02 (-0.00505131 0.00578106)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.50 using 59 PHA bins.
# Reduced chi-squared = 0.8818 for 55 degrees of freedom
# Null hypothesis probability = 7.196395e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.786e-06 1.428e-07
25- 50 6.304e-06 1.668e-07
50-150 1.092e-05 3.208e-07
15-150 2.001e-05 4.331e-07
Peak spectrum fit
Power-law model
Time interval is from 111.340 sec. to 112.340 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.71769 ( -0.0668101 0.0674351 )
Norm@50keV : 5.10829E-02 ( -0.00201648 0.00201143 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.82 using 59 PHA bins.
# Reduced chi-squared = 0.9267 for 57 degrees of freedom
# Null hypothesis probability = 6.324823e-01
Photon flux (15-150 keV) in 1 sec: 6.82685 ( -0.273943 0.274445 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.72341e-07 ( -1.9331e-08 1.93779e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 111.340 sec. to 112.340 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.11810 ( -0.30114 0.282142 )
Epeak [keV] : 74.3861 ( -10.3412 22.7406 )
Norm@50keV : 0.101561 ( -0.0274975 0.0409378 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.74 using 59 PHA bins.
# Reduced chi-squared = 0.6917 for 56 degrees of freedom
# Null hypothesis probability = 9.618711e-01
Photon flux (15-150 keV) in 1 sec: 6.60753 ( -0.28971 0.2904 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.55059e-07 ( -2.1108e-08 2.1088e-08 ) ergs/cm2
Band function
Time interval is from 111.340 sec. to 112.340 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.13090 ( -0.268504 0.227264 )
beta : -9.37121 ( 9.37164 19.3716 )
Epeak [keV] : 75.1217 ( -9.10751 22.0485 )
Norm@50keV : 9.99351E-02 ( -0.0243045 0.012261 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.74 using 59 PHA bins.
# Reduced chi-squared = 0.7044 for 55 degrees of freedom
# Null hypothesis probability = 9.526157e-01
Photon flux (15-150 keV) in 1 sec: 6.61236 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.54906e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.7959 ( )
R^2/D10^2 : 0.995762 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 163.43 using 59 PHA bins.
# Reduced chi-squared = 2.8671 for 57 degrees of freedom
# Null hypothesis probability = 3.283547e-12
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.008e-08 2.770e-09
25- 50 1.469e-07 6.750e-09
50-150 1.827e-07 1.330e-08
15-150 3.697e-07 1.645e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 132.769 (-20.571 24.0327)
Norm : 28.4521 (-1.36211 1.58675)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.67 using 59 PHA bins.
# Reduced chi-squared = 0.6959 for 57 degrees of freedom
# Null hypothesis probability = 9.608773e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.373e-08 5.180e-09
25- 50 1.341e-07 8.050e-09
50-150 2.511e-07 6.205e-08
15-150 4.590e-07 6.820e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.83958 (-1.01838 1.09584)
R1^2/D10^2 : 7.65973 (-2.93429 5.80873)
kT2 [keV] : 22.3375 (-2.57789 3.60384)
R2^2/D10^2 : 0.128557 (-0.0586381 0.0849766)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.49 using 59 PHA bins.
# Reduced chi-squared = 0.7544 for 55 degrees of freedom
# Null hypothesis probability = 9.109568e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.795e-08 9.960e-09
25- 50 1.364e-07 1.320e-08
50-150 2.457e-07 3.835e-08
15-150 4.500e-07 5.620e-08
Plot creation:
Fri Nov 18 10:52:50 EST 2016