batgrbproduct Analysis for Trigger=720697
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): Sun Nov 6 16:41:33 EST 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger720697/GCN5_download_cron
======================================================================
Trigger: 00720697 Segment: 000
BAT Trigger Time: 500014399.488 [s; MET]
Trigger Stop: 500014400.512 [s; MET]
UTC: 2016-11-05T04:53:02.375560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 120.162953074002 Dec: -44.7796477196195 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.86
Image Trigger?: NO
Rate S/N Ratio: 17.058722109232 [ if not an image trigger ]
Image S/N Ratio: 10.86
Flight Position: [ source = BAT ]
RA: 120.162953074002 Dec: -44.7796477196195 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 120.197774815995 Dec: -44.7629732704572 [deg; J2000]
{ 08h 00m 47.5s , -44d 45' 46.7" }
+/- 1.19085006355711 [arcmin] (estimated 90% radius based on SNR)
+/- 0.576782210431091 [arcmin] (formal 1-sigma fit error)
SNR: 23.7001512100327
Angular difference between Flight and Ground position is 1.789121 arcmin
Partial Coding Fraction: 0.859375 [ including projection effects ]
Duration
T90: 167.947999954224 +/- 26.3518743800973
Measured from: -47.1959998607635
to: 120.75200009346 [s; relative to TRIGTIME]
T50: 62.6599999070168 +/- 2.34235431814079
Measured from: 1.26000016927719
to: 63.9200000762939 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.632000029087067
to: 1.63200002908707 [s; relative to TRIGTIME]
Total Fluence
Measured from: -88
to: 164.81200003624 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.165473 3.643602 2.898610 0.703970
0.096476 0.099479 0.086037 0.072048 [error]
Peak 0.020703 0.072704 0.067739 0.035801
0.006553 0.007146 0.006676 0.005190 [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 7.15e-07 1.44e-06 2.24e-06 7.72e-06 6.25e-06 1.21e-05 erg/cm2
Error 4.61e-08 5.42e-08 8.64e-08 6.81e-07 2.15e-07 7.26e-07 erg/cm2
Peak flux Power-law 2.58e-01 4.04e-01 4.76e-01 1.09e+00 1.46e+00 2.23e+00 ph/cm2/s
Error 6.43e-02 6.17e-02 5.04e-02 2.54e-01 1.61e-01 2.67e-01 ph/cm2/s
Fluence Cutoff-PL 6.68e-07 1.47e-06 2.30e-06 5.09e-06 6.12e-06 9.53e-06 erg/cm2
Error 5.74e-08 6.03e-08 9.77e-08 -------- 2.38e-07 1.60e-06 erg/cm2
Peak flux Cutoff-PL 2.34e-01 4.07e-01 4.96e-01 8.11e-01 1.44e+00 1.95e+00 ph/cm2/s
Error 7.91e-02 6.48e-02 6.62e-02 4.44e-01 1.64e-01 4.54e-01 ph/cm2/s
Fluence Band 1.01e-06 2.70e-06 3.90e-06 1.08e-05 1.05e-05 1.85e-05 erg/cm2
Error 1.12e-07 -------- 2.26e-07 -------- 3.55e-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 1.356 0.059 - - 2.53e-03 8.16e-05 60.530 57
CPL 1.051 0.241 168.5 191.3 3.52e-03 9.01e-04 55.500 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.763 0.191 - - 1.26e-02 1.45e-03 59.760 57
CPL 0.445 0.615 303.0 0.0 1.71e-02 1.23e-02 59.190 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: 144.640000 sec.
T50 in the 50-300 keV band: 54.400000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 252.812 -88.000 164.812
T90 167.948 -47.196 120.752
T50 62.660 1.260 63.920
Peak 1.000 0.632 1.632
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
120.1978 -44.7630 0.0081 24.4 20.9 3.9100 23.7 TRIG_00720697
------------------------------------------
Foreground time interval of the image:
-88.000 11.213 (delta_t = 99.213 [sec])
Background time interval of the image:
-239.488 -88.000 (delta_t = 151.488 [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 -88.000 sec. to 164.812 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.35619 ( -0.0591394 0.0589173 )
Norm@50keV : 2.53492E-03 ( -8.16041e-05 8.16024e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.53 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.496239e-01
Photon flux (15-150 keV) in 252.8 sec: 0.305776 ( -0.0106088 0.0106322 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.25018e-06 ( -2.15157e-07 2.15565e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -88.000 sec. to 164.812 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.05105 ( -0.247144 0.233905 )
Epeak [keV] : 168.517 ( -51.898 330.784 )
Norm@50keV : 3.51801E-03 ( -0.000763212 0.00103819 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.50 using 59 PHA bins.
# Reduced chi-squared = 0.9911 for 56 degrees of freedom
# Null hypothesis probability = 4.937225e-01
Photon flux (15-150 keV) in 252.8 sec: 0.300152 ( -0.011371 0.011396 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.12411e-06 ( -2.38719e-07 2.37556e-07 ) ergs/cm2
Band function
Time interval is from -88.000 sec. to 164.812 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.494118 ( -0.741965 3.4971 )
beta : -1.48808 ( -0.120194 0.100469 )
Epeak [keV] : 46.7492 ( -23.95 39.8894 )
Norm@50keV : 3.46903E-02 ( -0.0343146 14.5331 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.89 using 59 PHA bins.
# Reduced chi-squared = 0.8889 for 55 degrees of freedom
# Null hypothesis probability = 7.059690e-01
Photon flux (15-150 keV) in 252.8 sec: 0.515690 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.05227e-05 ( -1.0521e-05 -3.58647e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 17.4506 ( )
R^2/D10^2 : 2.08165E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 226.10 using 59 PHA bins.
# Reduced chi-squared = 3.9666 for 57 degrees of freedom
# Null hypothesis probability = 5.363665e-22
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.239e-07 2.098e-08
25- 50 1.463e-06 6.383e-08
50-150 3.207e-06 1.883e-07
15-150 4.994e-06 1.858e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-6.09204 -200)
Norm : 1.28304 (-0.0415367 0.0415367)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 90.68 using 59 PHA bins.
# Reduced chi-squared = 1.591 for 57 degrees of freedom
# Null hypothesis probability = 3.017790e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.079e-07 2.920e-08
25- 50 1.554e-06 5.460e-08
50-150 3.409e-06 1.087e-07
15-150 5.770e-06 2.035e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.01494 (-0.98013 1.04828)
R1^2/D10^2 : 0.129135 (-0.0357135 0.053943)
kT2 [keV] : 34.4290 (-5.011 8.02638)
R2^2/D10^2 : 1.64441E-03 (-0.000793305 0.00116821)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.80 using 59 PHA bins.
# Reduced chi-squared = 0.8872 for 55 degrees of freedom
# Null hypothesis probability = 7.092313e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.875e-07 6.156e-08
25- 50 1.560e-06 1.371e-07
50-150 4.015e-06 5.789e-07
15-150 6.163e-06 8.532e-07
Peak spectrum fit
Power-law model
Time interval is from 0.632 sec. to 1.632 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.762529 ( -0.195826 0.18551 )
Norm@50keV : 1.26433E-02 ( -0.00146247 0.00143708 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.76 using 59 PHA bins.
# Reduced chi-squared = 1.048 for 57 degrees of freedom
# Null hypothesis probability = 3.758225e-01
Photon flux (15-150 keV) in 1 sec: 1.45550 ( -0.160828 0.161532 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.50126e-07 ( -1.6394e-08 1.64386e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.632 sec. to 1.632 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.445130 ( -0.826393 0.403903 )
Epeak [keV] : 303.033 ( -303.038 -303.038 )
Norm@50keV : 1.70952E-02 ( -0.00560735 0.0189435 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.19 using 59 PHA bins.
# Reduced chi-squared = 1.057 for 56 degrees of freedom
# Null hypothesis probability = 3.600386e-01
Photon flux (15-150 keV) in 1 sec: 1.44006 ( -0.16399 0.16489 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.48866e-07 ( -1.7063e-08 1.6852e-08 ) ergs/cm2
Band function
Time interval is from 0.632 sec. to 1.632 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.749927 ( 0.845727 0.845727 )
beta : -0.764998 ( -0.185699 0.195772 )
Epeak [keV] : 10000.00 ( -10000 -10000 )
Norm@50keV : 1.27207E-02 ( -0.00152829 0.0065747 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.73 using 59 PHA bins.
# Reduced chi-squared = 1.086 for 55 degrees of freedom
# Null hypothesis probability = 3.078256e-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] : 26.8234 (-3.98668 5.15133)
R^2/D10^2 : 3.02531E-02 (-0.012132 0.0188681)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.62 using 59 PHA bins.
# Reduced chi-squared = 1.221 for 57 degrees of freedom
# Null hypothesis probability = 1.218755e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.638e-09 8.085e-10
25- 50 2.136e-08 3.900e-09
50-150 1.125e-07 1.988e-08
15-150 1.375e-07 2.325e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-16.9087 -200)
Norm : 5.83625 (-0.675277 0.675277)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 107.79 using 59 PHA bins.
# Reduced chi-squared = 1.8911 for 57 degrees of freedom
# Null hypothesis probability = 5.589089e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.454e-08 8.070e-09
25- 50 2.796e-08 1.550e-08
50-150 6.133e-08 3.396e-08
15-150 1.038e-07 5.735e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 13.0178 (-4.15506 5.57368)
R1^2/D10^2 : 0.161313 (-0.094729 0.25979)
kT2 [keV] : 64.0861 (-32.7101 -68.0128)
R2^2/D10^2 : 2.24271E-03 (-0.0015677 0.00968623)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.61 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 55 degrees of freedom
# Null hypothesis probability = 4.147275e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.621e-09 3.771e-09
25- 50 2.625e-08 1.401e-08
50-150 1.159e-07 5.830e-08
15-150 1.488e-07 7.370e-08
Plot creation:
Sun Nov 6 16:46:13 EST 2016