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
134.8369 -55.2321 0.0443 24.9 -27.6 0.5235 4.3 TRIG_00796115
------------------------------------------
Foreground time interval of the image:
0.000 66.000 (delta_t = 66.000 [sec])
Background time interval of the image:
-239.000 0.000 (delta_t = 239.000 [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
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
Time interval is from 0.000 sec. to 66.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.05021 ( -0.45145 0.524569 )
Norm@50keV : 4.78484E-04 ( -0.000174958 0.000170791 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.66 using 59 PHA bins.
# Reduced chi-squared = 0.7133 for 57 degrees of freedom
# Null hypothesis probability = 9.498694e-01
Photon flux (15-150 keV) in 66 sec: 7.34802E-02 ( -0.0195814 0.0195966 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.92132e-07 ( -9.49991e-08 1.02491e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 66.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.274435 ( -7.08838 2.50699 )
Epeak [keV] : 34.1589 ( -34.0798 -34.0798 )
Norm@50keV : 1.49103E-02 ( -0.0177094 954.96 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.26 using 59 PHA bins.
# Reduced chi-squared = 0.6832 for 56 degrees of freedom
# Null hypothesis probability = 9.664469e-01
Photon flux (15-150 keV) in 66 sec: 6.95162E-02 ( -0.0191273 0.019761 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.28202e-07 ( -7.32118e-08 1.17619e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 66.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.49324 ( -3.51418 -1.52635 )
beta : -3.14715 ( 3.15752 1.25692 )
Epeak [keV] : 31.6420 ( -13.8862 28.0616 )
Norm@50keV : 0.110275 ( -0.133568 18.9326 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.70 using 59 PHA bins.
# Reduced chi-squared = 0.6854 for 55 degrees of freedom
# Null hypothesis probability = 9.639052e-01
Photon flux (15-150 keV) in 66 sec: 6.99286E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.54091e-07 ( -2.53629e-07 -9.22046e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.49627 (-1.90349 2.57429)
R^2/D10^2 : 6.86554E-02 (-0.0445439 0.115437)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.30 using 59 PHA bins.
# Reduced chi-squared = 0.6720 for 57 degrees of freedom
# Null hypothesis probability = 9.729480e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.163e-08 3.610e-08
25- 50 1.194e-07 6.917e-08
50-150 3.808e-08 2.939e-08
15-150 2.191e-07 1.114e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 51.7116 (-25.1163 81.2713)
Norm : 0.418408 (-0.148861 0.247565)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.18 using 59 PHA bins.
# Reduced chi-squared = 0.6873 for 57 degrees of freedom
# Null hypothesis probability = 9.655897e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.803e-08 2.910e-08
25- 50 9.887e-08 4.940e-08
50-150 9.905e-08 7.420e-08
15-150 2.659e-07 1.487e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 24.7746 (-24.2643 -24.2643)
R1^2/D10^2 : 3.47284E-04 (-0.000359615 0.161396)
kT2 [keV] : 7.56552 (-7.56619 3.06166)
R2^2/D10^2 : 9.52137E-02 (-0.09501 -0.09501)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.07 using 59 PHA bins.
#Fit statistic : Chi-Squared = 37.65 using 59 PHA bins.
# Reduced chi-squared = 0.6921 for 55 degrees of freedom
# Reduced chi-squared = 0.6846 for 55 degrees of freedom
# Null hypothesis probability = 9.602046e-01
# Null hypothesis probability = 9.643478e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.374e-08 1.831e-07
25- 50 1.149e-07 6.201e-07
50-150 5.500e-08 1.156e-06
15-150 2.336e-07 2.059e-06
Peak spectrum fit
Power-law model
Time interval is from 17.000 sec. to 18.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.50744 ( -1.08661 1.27811 )
Norm@50keV : 2.46421E-03 ( -0.0024642 0.00128834 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.29 using 59 PHA bins.
# Reduced chi-squared = 1.093 for 57 degrees of freedom
# Null hypothesis probability = 2.937257e-01
Photon flux (15-150 keV) in 1 sec: 0.308251 ( -0.308251 0.157216 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.33489e-08 ( -1.35704e-08 1.43851e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 17.000 sec. to 18.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.90442 ( -1.10024 1.28111 )
Epeak [keV] : 450.641 ( -9999.36 -9999.36 )
Norm@50keV : 1.86341E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.03 using 59 PHA bins.
# Reduced chi-squared = 1.108 for 56 degrees of freedom
# Null hypothesis probability = 2.699859e-01
Photon flux (15-150 keV) in 1 sec: 0.309249 ( -0.309249 0.156113 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.33681e-08 ( -1.36238e-08 1.42526e-08 ) ergs/cm2
Band function
Time interval is from 17.000 sec. to 18.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.51513 ( -2.00092 2.80595 )
beta : -9.37110 ( 9.3711 9.3711 )
Epeak [keV] : 9999.36 ( -9983.79 -9999.36 )
Norm@50keV : 2.46505E-03 ( -0.00135878 0.111574 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.29 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 55 degrees of freedom
# Null hypothesis probability = 2.329436e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.82043e-09 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 21.9629 (-21.9717 33.2376)
R^2/D10^2 : 9.53424E-03 (-0.00952334 1.32752)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.00 using 59 PHA bins.
# Reduced chi-squared = 1.123 for 57 degrees of freedom
# Null hypothesis probability = 2.443855e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.518e-10 5.910e-10
25- 50 4.500e-09 2.987e-09
50-150 1.622e-08 1.223e-08
15-150 2.157e-08 1.503e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-199.363 -199.363)
Norm : 1.24997 (-0.631539 1.20901)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.44 using 59 PHA bins.
# Reduced chi-squared = 1.095 for 57 degrees of freedom
# Null hypothesis probability = 2.891168e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.113e-09 2.045e-09
25- 50 5.987e-09 3.996e-09
50-150 1.313e-08 8.845e-09
15-150 2.223e-08 1.539e-08
Double BB
# Reduced chi-squared = 1.095 for 55 degrees of freedom
# Reduced chi-squared = 1.094 for 55 degrees of freedom
# Reduced chi-squared = 1.094 for 55 degrees of freedom
# Null hypothesis probability = 2.602180e-01
# Null hypothesis probability = 2.664828e-01
# Null hypothesis probability = 2.681824e-01
# Null hypothesis probability = 2.770727e-01
# Null hypothesis probability = 2.839418e-01
# Null hypothesis probability = 2.886483e-01
# Null hypothesis probability = 2.914540e-01
# Null hypothesis probability = 2.930821e-01
# Null hypothesis probability = 2.939724e-01
# Null hypothesis probability = 2.944502e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.834e-09 2.580e-09
25- 50 4.731e-09 2.522e-09
50-150 1.690e-08 1.147e-08
15-150 2.547e-08 1.513e-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: 2.05021 ( -0.45145 0.524569 )
Norm@50keV : 4.78484E-04 ( -0.000174958 0.000170791 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.66 using 59 PHA bins.
# Reduced chi-squared = 0.7133 for 57 degrees of freedom
# Null hypothesis probability = 9.498694e-01
Photon flux (15-150 keV) in 66 sec: 7.34802E-02 ( -0.0195814 0.0195966 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.92132e-07 ( -9.49991e-08 1.02491e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.274435 ( -7.08838 2.50699 )
Epeak [keV] : 34.1589 ( -34.0798 -34.0798 )
Norm@50keV : 1.49103E-02 ( -0.0177094 954.96 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.26 using 59 PHA bins.
# Reduced chi-squared = 0.6832 for 56 degrees of freedom
# Null hypothesis probability = 9.664469e-01
Photon flux (15-150 keV) in 66 sec: 6.95162E-02 ( -0.0191273 0.019761 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.28202e-07 ( -7.32118e-08 1.17619e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.79233 ( -3.35996 -1.32614 )
beta : -3.18017 ( 3.13994 1.24133 )
Epeak [keV] : 30.6949 ( -14.1495 27.7964 )
Norm@50keV : 0.894275 ( -0.890367 18.1672 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.67 using 59 PHA bins.
# Reduced chi-squared = 0.6849 for 55 degrees of freedom
# Null hypothesis probability = 9.641880e-01
Photon flux (15-150 keV) in 66 sec: 6.99286E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.54091e-07 ( -2.53629e-07 -9.22046e-08 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 8.92e-08
S(50-100 keV) = 8.62e-08
T90 vs. Hardness ratio plot
T90 = 63 sec.
Hardness ratio (energy fluence ratio) = 0.966368
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.12576
Count Ratio (50-100 keV) / (15-25 keV) = 0.43251
Mask shadow pattern
IMX = 4.116222879512755E-01, IMY = 2.149009300493741E-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:
-239.000000 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.4957 -40.5301 1.5 10.5 -17.4 1.6142 7.7 2.1 Vela X-1
170.3610 -60.6107 80.4 36.4 -58.9 -0.0607 -0.1 1.5 Cen X-3
186.5973 -62.7228 5.0 44.0 -62.7 2.6915 2.3 3.3 GX 301-2
174.7783 -23.1896 3.0 32.3 -128.1 1.1779 3.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 66.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.3220 -40.6263 5.8 10.6 -16.8 -0.2158 -2.0 10.3 Vela X-1
170.6422 -60.5802 5.9 36.5 -59.1 0.3980 1.9 10.0 Cen X-3
186.4714 -62.6819 8.2 43.9 -62.7 0.7370 1.4 7.4 GX 301-2
89.5796 -65.3380 1.9 46.1 -7.4 1.0761 6.0 ------ UNKNOWN
167.6942 -22.8067 1.9 26.4 -133.8 0.8037 6.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
118.200600 699.610000
701.000000 839.840000
841.000000 898.850400
901.000000 929.900620
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5080 -40.5481 0.9 14.7 143.8 6.7745 13.0 1.0 Vela X-1
170.3386 -60.5805 3.4 19.4 -97.8 2.3057 3.4 2.6 Cen X-3
186.6308 -62.7647 1.1 26.9 -91.0 9.4764 10.6 0.8 GX 301-2
189.2079 -23.8872 2.4 50.5 -143.9 9.3011 4.8 ------ UNKNOWN
234.0761 -69.4953 3.4 42.5 -69.1 8.0266 3.4 ------ UNKNOWN
288.6940 -74.0445 3.7 49.5 -47.5 8.1819 3.1 ------ UNKNOWN
Plot creation:
Sun Dec 10 17:44:37 EST 2017