Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
130.1683 -35.2752 0.0302 23.2 -26.3 1.2154 6.4 TRIG_00954304
------------------------------------------
Foreground time interval of the image:
-14.799 14.930 (delta_t = 29.729 [sec])
16.000 72.101 (delta_t = 56.101 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
8 ms binning
From T100_start-3 s to T100_start+3 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
2 ms binning
From T100_start-1 s to T100_start+1 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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
-81.888000 -49.844800
-49.000000 14.930000
16.000000 132.868000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.25997 ( -0.161858 0.170985 )
Norm@50keV : 7.00872E-04 ( -8.2307e-05 8.12681e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.17 using 59 PHA bins.
# Reduced chi-squared = 1.354 for 57 degrees of freedom
# Null hypothesis probability = 3.882133e-02
Photon flux (15-150 keV) in 212.8 sec: 0.119815 ( -0.00967505 0.00967715 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.41528e-06 ( -1.378e-07 1.41072e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-81.888000 -49.844800
-49.000000 14.930000
16.000000 132.868000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.841040 ( -1.0027 0.819021 )
Epeak [keV] : 31.4707 ( -11.1506 5.66126 )
Norm@50keV : 4.96623E-03 ( -0.00496619 0.0153501 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.17 using 59 PHA bins.
# Reduced chi-squared = 1.200 for 56 degrees of freedom
# Null hypothesis probability = 1.457291e-01
Photon flux (15-150 keV) in 212.8 sec: 0.113259 ( -0.010128 0.010185 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.24869e-06 ( -1.39031e-07 1.5381e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-81.888000 -49.844800
-49.000000 14.930000
16.000000 132.868000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.840984 ( -0.577177 1.34237 )
beta : -10.0000 ( 10 7.10543e-15 )
Epeak [keV] : 31.4636 ( -11.1478 5.56395 )
Norm@50keV : 4.96676E-03 ( -0.00496676 0.0153699 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.17 using 59 PHA bins.
# Reduced chi-squared = 1.221 for 55 degrees of freedom
# Null hypothesis probability = 1.256287e-01
Photon flux (15-150 keV) in 212.8 sec: 0.113558 ( 6.88644 -0.010274 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.24653e-06 ( -1.24504e-06 -1.38116e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.79062 (-0.742049 0.808172)
R^2/D10^2 : 8.98344E-02 (-0.0265864 0.037989)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.66 using 59 PHA bins.
# Reduced chi-squared = 1.398 for 57 degrees of freedom
# Null hypothesis probability = 2.541253e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.840e-07 3.501e-08
25- 50 5.816e-07 5.394e-08
50-150 2.063e-07 4.788e-08
15-150 1.072e-06 1.047e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 43.6330 (-8.22008 11.2963)
Norm : 0.731199 (-0.105353 0.126829)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.10 using 59 PHA bins.
# Reduced chi-squared = 1.195 for 57 degrees of freedom
# Null hypothesis probability = 1.490008e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.672e-07 3.969e-08
25- 50 5.009e-07 4.448e-08
50-150 4.251e-07 1.028e-07
15-150 1.293e-06 1.452e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.67431 (-2.41596 2.69021)
R1^2/D10^2 : 1.50278 (-1.32598 4620.2)
kT2 [keV] : 11.0165 (-2.01152 4.67442)
R2^2/D10^2 : 3.06503E-02 (-0.026022 0.0510446)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.09 using 59 PHA bins.
# Reduced chi-squared = 1.220 for 55 degrees of freedom
# Null hypothesis probability = 1.270962e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.552e-07 1.706e-07
25- 50 5.221e-07 2.214e-07
50-150 3.221e-07 1.291e-07
15-150 1.199e-06 4.481e-07
Peak spectrum fit
Power-law model
Time interval is from -81.898 sec. to -80.898 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.70872 ( -1.02976 1.40216 )
Norm@50keV : 2.53322E-03 ( -0.00253272 0.00166129 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.55 using 59 PHA bins.
# Reduced chi-squared = 0.8518 for 57 degrees of freedom
# Null hypothesis probability = 7.796530e-01
Photon flux (15-150 keV) in 1 sec: 0.337471 ( -0.199261 0.199442 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.34318e-08 ( -1.54911e-08 1.71948e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -81.898 sec. to -80.898 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.05325E-02 ( 0.404013 3.64185 )
Epeak [keV] : 54.6161 ( -53.9758 -53.9758 )
Norm@50keV : 1.86883E-02 ( -0.0373793 8407.27 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.99 using 59 PHA bins.
# Reduced chi-squared = 0.8570 for 56 degrees of freedom
# Null hypothesis probability = 7.679839e-01
Photon flux (15-150 keV) in 1 sec: 0.312639 ( -0.200666 0.20723 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.09867e-08 ( -1.31693e-08 1.73551e-08 ) ergs/cm2
Band function
Time interval is from -81.898 sec. to -80.898 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.414149 ( -2.28453 -0.284527 )
beta : -9.37167 ( 9.37167 19.3717 )
Epeak [keV] : 54.3515 ( -29.1183 185.577 )
Norm@50keV : 3.22167E-02 ( -0.0205919 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.92 using 59 PHA bins.
# Reduced chi-squared = 0.8712 for 55 degrees of freedom
# Null hypothesis probability = 7.397251e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 6.29961e-09 ( -6.29261e-09 -2.02537e-09 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.4930 (-6.26173 11.8276)
R^2/D10^2 : 5.94967E-02 (-0.0594967 0.460342)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.91 using 59 PHA bins.
# Reduced chi-squared = 0.8405 for 57 degrees of freedom
# Null hypothesis probability = 7.990059e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.294e-09 1.585e-09
25- 50 8.220e-09 5.565e-09
50-150 9.663e-09 8.105e-09
15-150 2.018e-08 1.387e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 102.880 (-106.133 -106.133)
Norm : 1.52231 (-0.912101 2.00241)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.30 using 59 PHA bins.
# Reduced chi-squared = 0.8474 for 57 degrees of freedom
# Null hypothesis probability = 7.872849e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.979e-09 2.548e-09
25- 50 6.919e-09 4.880e-09
50-150 1.139e-08 1.034e-08
15-150 2.229e-08 1.674e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.00060E-04 (1.39833e-07 -0.00010006)
R1^2/D10^2 : 498.392 (-498.391 -498.391)
kT2 [keV] : 13.4929 (-6.26171 11.8276)
R2^2/D10^2 : 5.94970E-02 (-0.059497 0.460345)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.02 using 59 PHA bins.
#Fit statistic : Chi-Squared = 47.91 using 59 PHA bins.
# Reduced chi-squared = 0.8730 for 55 degrees of freedom
# Reduced chi-squared = 0.8711 for 55 degrees of freedom
# Null hypothesis probability = 7.363198e-01
# Null hypothesis probability = 7.399556e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.926e-09 1.370e-09
25- 50 7.664e-09 5.195e-09
50-150 1.181e-08 9.000e-09
15-150 2.140e-08 1.620e-08
Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)
Power-law model
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.06246 ( -0.211334 0.226179 )
Norm@50keV : 7.48143E-04 ( -0.000120174 0.000118203 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 89.23 using 59 PHA bins.
# Reduced chi-squared = 1.565 for 57 degrees of freedom
# Null hypothesis probability = 4.078416e-03
Photon flux (15-150 keV) in 85.83 sec: 0.115568 ( -0.013699 0.0136994 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.94565e-07 ( -8.65553e-08 8.95396e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.42287E-02 ( -1.57389 1.19173 )
Epeak [keV] : 37.3381 ( -6.38037 7.36017 )
Norm@50keV : 1.22976E-02 ( -0.0126245 0.103496 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.19 using 59 PHA bins.
# Reduced chi-squared = 1.414 for 56 degrees of freedom
# Null hypothesis probability = 2.238806e-02
Photon flux (15-150 keV) in 85.83 sec: 0.109415 ( -0.00697 0.01384 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.05638e-07 ( -7.74487e-08 8.93482e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -2.47754E-02 ( -1.2194 1.60258 )
beta : -10.0000 ( 10 1.06581e-14 )
Epeak [keV] : 37.3364 ( -6.44553 7.35537 )
Norm@50keV : 1.26478E-02 ( -0.0126478 0.103535 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.19 using 59 PHA bins.
# Reduced chi-squared = 1.440 for 55 degrees of freedom
# Null hypothesis probability = 1.802148e-02
Photon flux (15-150 keV) in 85.83 sec: 0.109940 ( 6.89006 -0.0141452 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.07452e-07 ( -5.06851e-07 -7.93018e-08 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 4.54e-07
S(50-100 keV) = 3.79e-07
T90 vs. Hardness ratio plot
T90 = 198.827999949455 sec.
Hardness ratio (energy fluence ratio) = 0.834802
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.997697
Count Ratio (50-100 keV) / (15-25 keV) = 0.338179
Mask shadow pattern
IMX = 3.843429467941836E-01, IMY = 1.899442981110766E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
Spacecraft aspect plot
Bright source in the pre-burst/pre-slew/post-slew images
Pre-burst image of 15-350 keV band
Time interval of the image:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-14.799410 14.930000
16.000000 72.100600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5059 -40.5785 4.3 24.3 -43.0 0.5612 2.6 1.8 Vela X-1
101.9763 -5.9660 2.6 48.0 30.5 1.7459 4.4 ------ UNKNOWN
130.1675 -35.2740 1.8 23.2 -26.3 1.1982 6.3 ------ UNKNOWN
83.8524 -43.3952 2.4 59.2 -18.9 5.5879 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
124.500590 184.400000
186.000000 303.150000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.3564 -40.3897 0.0 6.6 -136.7 -2.8404 -2.1 12.6 Vela X-1
170.5521 -60.5349 15.7 36.1 -132.6 -1.6197 -0.7 8.7 Cen X-3
186.6565 -62.7703 538.2 44.0 -133.1 -0.0664 -0.0 0.0 GX 301-2
139.1509 -14.3707 2.3 22.4 103.6 8.7304 5.0 ------ UNKNOWN
84.8458 -28.4864 2.5 38.7 -12.8 8.3223 4.6 ------ UNKNOWN
202.9303 -44.7317 2.4 54.7 -156.1 25.6921 4.8 ------ UNKNOWN
60.2862 -35.6960 2.3 55.6 -32.3 44.0682 5.0 ------ UNKNOWN
Plot creation:
Thu Feb 6 16:30:38 EST 2020