batgrbproduct Analysis for Trigger=702630
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): Sun Jul 3 19:08:44 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger702630/GCN5_download_cron
======================================================================
Trigger: 00702630 Segment: 000
BAT Trigger Time: 489195529.088 [s; MET]
Trigger Stop: 489195531.136 [s; MET]
UTC: 2016-07-02T23:38:32.584880 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 299.645072884098 Dec: 35.224609749928 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.69
Image Trigger?: NO
Rate S/N Ratio: 10.0995049383621 [ if not an image trigger ]
Image S/N Ratio: 6.69
Flight Position: [ source = BAT ]
RA: 299.645072884098 Dec: 35.224609749928 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 299.656144632877 Dec: 35.1837819446877 [deg; J2000]
{ 19h 58m 37.5s , +35d 11' 01.6" }
+/- 4.50044208427958 [arcmin] (estimated 90% radius based on SNR)
+/- 2.7506406700261 [arcmin] (formal 1-sigma fit error)
SNR: 3.54729003016306
Angular difference between Flight and Ground position is 2.509086 arcmin
Partial Coding Fraction: 0.984375 [ including projection effects ]
Duration
T90: 506.307999968529 +/- 29.1981540217324
Measured from: 70.3120000958443
to: 576.620000064373 [s; relative to TRIGTIME]
T50: 281.327999949455 +/- 16.3360793216604
Measured from: 206.488000094891
to: 487.816000044346 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 600.486000001431
to: 601.486000001431 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.68400001525879
to: 601.480000019073 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 7.680792 9.227531 5.756583 1.247606
0.137144 0.141242 0.122199 0.105687 [error]
Peak 0.014457 0.026207 0.043163 0.027760
0.014891 0.015293 0.012962 0.010853 [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 2.30e-06 3.65e-06 4.37e-06 1.02e-05 1.33e-05 2.05e-05 erg/cm2
Error 1.05e-07 9.26e-08 1.32e-07 7.11e-07 3.11e-07 7.78e-07 erg/cm2
Peak flux Power-law 1.51e-01 1.82e-01 1.58e-01 2.34e-01 5.73e-01 7.25e-01 ph/cm2/s
Error 1.58e-01 1.14e-01 1.22e-01 3.00e-01 3.13e-01 3.78e-01 ph/cm2/s
Fluence Cutoff-PL 2.19e-06 3.69e-06 4.42e-06 7.68e-06 1.30e-05 1.80e-05 erg/cm2
Error 1.37e-07 1.00e-07 1.40e-07 1.92e-06 3.73e-07 1.92e-06 erg/cm2
Peak flux Cutoff-PL 1.15e-01 1.95e-01 1.81e-01 1.00e-01 5.56e-01 5.92e-01 ph/cm2/s
Error 1.52e-01 1.67e-01 1.18e-01 1.65e-01 4.39e-01 4.26e-01 ph/cm2/s
Fluence Band 2.08e-06 3.73e-06 4.34e-06 9.39e-06 1.30e-05 1.96e-05 erg/cm2
Error -------- 1.15e-07 1.36e-07 9.77e-07 3.61e-07 1.06e-06 erg/cm2
Peak flux Band 1.24e-01 1.90e-01 1.77e-01 1.34e-01 5.65e-01 6.28e-01 ph/cm2/s
Error 1.53e-01 -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.739 0.046 - - 2.38e-03 5.43e-05 65.490 57
CPL 1.534 0.185 119.2 214.3 2.98e-03 5.88e-04 61.750 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.204 0.910 - - 4.88e-03 3.71e-03 55.700 57
CPL 0.089 3.060 97.0 0.0 1.57e-02 1.45e+02 55.320 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 603.164 -1.684 601.480
T90 506.308 70.312 576.620
T50 281.328 206.488 487.816
Peak 1.000 600.486 601.486
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.6561 +35.1838 0.0543 9.1 119.3 0.2283 3.5 TRIG_00702630
------------------------------------------
Foreground time interval of the image:
-1.684 29.413 (delta_t = 31.097 [sec])
Background time interval of the image:
-92.687 -75.388 (delta_t = 17.299 [sec])
-74.088 -23.198 (delta_t = 50.890 [sec])
-22.088 -1.684 (delta_t = 20.404 [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
-1.684000 188.292000
188.912000 601.480000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.73892 ( -0.0458641 0.0459999 )
Norm@50keV : 2.38389E-03 ( -5.43666e-05 5.43328e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.49 using 59 PHA bins.
# Reduced chi-squared = 1.149 for 57 degrees of freedom
# Null hypothesis probability = 2.060075e-01
Photon flux (15-150 keV) in 602.5 sec: 0.321036 ( -0.00833059 0.00836902 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.3262e-05 ( -3.10485e-07 3.10894e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-1.684000 188.292000
188.912000 601.480000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.53435 ( -0.188498 0.180791 )
Epeak [keV] : 119.242 ( -33.4467 395.174 )
Norm@50keV : 2.97672E-03 ( -0.000517529 0.000657916 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.75 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 56 degrees of freedom
# Null hypothesis probability = 2.781832e-01
Photon flux (15-150 keV) in 602.5 sec: 0.314959 ( -0.009728 0.009793 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.30306e-05 ( -3.73188e-07 3.71983e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-1.684000 188.292000
188.912000 601.480000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.07679 ( -0.606006 3.11475 )
beta : -1.81821 ( 1.8183 0.0787754 )
Epeak [keV] : 53.5885 ( -21.2403 117.751 )
Norm@50keV : 5.71791E-03 ( -0.0031512 1.79073 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.91 using 59 PHA bins.
# Reduced chi-squared = 1.089 for 55 degrees of freedom
# Null hypothesis probability = 3.023376e-01
Photon flux (15-150 keV) in 602.5 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.29888e-05 ( -1.29845e-05 -3.60596e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.3386 ( )
R^2/D10^2 : 3.77625E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 452.51 using 59 PHA bins.
# Reduced chi-squared = 7.9387 for 57 degrees of freedom
# Null hypothesis probability = 6.136453e-63
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.856e-07 4.730e-08
25- 50 3.753e-06 1.054e-07
50-150 5.141e-06 2.244e-07
15-150 9.880e-06 2.440e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 129.659 (-11.8655 21.3473)
Norm : 1.32587 (-0.0509658 0.0402726)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.77 using 59 PHA bins.
# Reduced chi-squared = 1.171 for 57 degrees of freedom
# Null hypothesis probability = 1.763696e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.994e-06 1.091e-07
25- 50 3.664e-06 1.657e-07
50-150 7.052e-06 1.493e-06
15-150 1.271e-05 1.621e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.34316 (-0.571123 0.590064)
R1^2/D10^2 : 0.303414 (-0.0717145 0.102568)
kT2 [keV] : 26.3838 (-2.28252 2.86764)
R2^2/D10^2 : 3.15917E-03 (-0.000996223 0.00129328)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.83 using 59 PHA bins.
# Reduced chi-squared = 1.160 for 55 degrees of freedom
# Null hypothesis probability = 1.940365e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.883e-06 1.407e-07
25- 50 3.792e-06 1.681e-07
50-150 7.147e-06 4.880e-07
15-150 1.282e-05 6.356e-07
Peak spectrum fit
Power-law model
Time interval is from 600.486 sec. to 601.486 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.20359 ( -0.97864 0.841351 )
Norm@50keV : 4.87816E-03 ( -0.00487826 0.00253887 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.70 using 59 PHA bins.
# Reduced chi-squared = 0.9772 for 57 degrees of freedom
# Null hypothesis probability = 5.240029e-01
Photon flux (15-150 keV) in 1 sec: 0.572875 ( -0.309556 0.317422 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.94418e-08 ( -2.62451e-08 2.66321e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 600.486 sec. to 601.486 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 8.91340E-02 ( -0.0899212 6.02999 )
Epeak [keV] : 96.9951 ( -97.0193 -97.0193 )
Norm@50keV : 1.56988E-02 ( -0.0156884 290.917 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.32 using 59 PHA bins.
# Reduced chi-squared = 0.9879 for 56 degrees of freedom
# Null hypothesis probability = 5.005048e-01
Photon flux (15-150 keV) in 1 sec: 0.555860 ( -0.55586 0.321747 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.8022e-08 ( -2.66128e-08 2.72186e-08 ) ergs/cm2
Band function
Time interval is from 600.486 sec. to 601.486 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.32232E-02 ( -1.38135 0.611563 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 94.8032 ( -53.8961 389.848 )
Norm@50keV : 1.72341E-02 ( -0.0170863 2.62656 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.32 using 59 PHA bins.
# Reduced chi-squared = 1.006 for 55 degrees of freedom
# Null hypothesis probability = 4.623724e-01
Photon flux (15-150 keV) in 1 sec: 0.565339 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.80095e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 20.3145 (-9.57596 22.4141)
R^2/D10^2 : 2.64697E-02 (-0.0264688 0.192102)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.61 using 59 PHA bins.
# Reduced chi-squared = 0.9755 for 57 degrees of freedom
# Null hypothesis probability = 5.275444e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.093e-09 1.484e-09
25- 50 1.053e-08 6.715e-09
50-150 3.228e-08 2.356e-08
15-150 4.491e-08 3.250e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.361 (-199.362 -199.362)
Norm : 2.45375 (-1.29182 1.29176)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.07 using 59 PHA bins.
# Reduced chi-squared = 0.9838 for 57 degrees of freedom
# Null hypothesis probability = 5.097875e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.110e-09 4.426e-09
25- 50 1.175e-08 8.225e-09
50-150 2.578e-08 1.757e-08
15-150 4.364e-08 2.991e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.92374 (-5.90465 -5.90465)
R1^2/D10^2 : 0.716577 (-0.746519 -0.746519)
kT2 [keV] : 24.1147 (-24.1674 -24.1674)
R2^2/D10^2 : 1.33778E-02 (-0.0132715 0.152937)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.04 using 59 PHA bins.
# Reduced chi-squared = 1.001 for 55 degrees of freedom
# Null hypothesis probability = 4.731372e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.657e-09 3.325e-09
25- 50 1.085e-08 7.060e-09
50-150 3.348e-08 2.257e-08
15-150 4.898e-08 2.762e-08
Plot creation:
Sun Jul 3 19:18:53 EDT 2016