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
230.7808 -19.5907 0.0547 32.0 -16.0 1.0458 3.5 TRIG_00766161
------------------------------------------
Foreground time interval of the image:
-0.712 73.501 (delta_t = 74.213 [sec])
Background time interval of the image:
-12.599 -0.712 (delta_t = 11.887 [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 -0.712 sec. to 77.512 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.96602 ( -0.56121 0.695378 )
Norm@50keV : 3.15186E-04 ( -0.000152398 0.000170827 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.64 using 59 PHA bins.
# Reduced chi-squared = 1.344 for 57 degrees of freedom
# Null hypothesis probability = 4.242937e-02
Photon flux (15-150 keV) in 78.22 sec: 8.45701E-02 ( -0.0200428 0.0200672 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.91685e-07 ( -8.47709e-08 9.37905e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.712 sec. to 77.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.51028E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 89.79 using 59 PHA bins.
# Reduced chi-squared = 1.603 for 56 degrees of freedom
# Null hypothesis probability = 2.789434e-03
Photon flux (15-150 keV) in 78.22 sec: 7.96434E-02 ( -0.0191989 0.0229646 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.52754e-18 ( 0 0 ) ergs/cm2
Band function
Time interval is from -0.712 sec. to 77.512 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.96155 ( -4.96155 -4.96155 )
beta : -3.45850 ( 3.4585 0.852539 )
Epeak [keV] : 18.2028 ( -18.2028 4.90656 )
Norm@50keV : 1131.93 ( -261.134 2.95514e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.71 using 59 PHA bins.
# Reduced chi-squared = 1.358 for 55 degrees of freedom
# Null hypothesis probability = 3.968862e-02
Photon flux (15-150 keV) in 78.22 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] : 4.82829 (-0.986784 1.28481)
R^2/D10^2 : 0.842948 (-0.842957 1.76423)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.18 using 59 PHA bins.
# Reduced chi-squared = 1.337 for 57 degrees of freedom
# Null hypothesis probability = 4.567861e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.391e-07 8.014e-08
25- 50 8.328e-08 5.030e-08
50-150 2.851e-09 2.533e-09
15-150 2.253e-07 1.352e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 16.2503 (-6.418 13.4982)
Norm : 1.32912 (-0.688897 1.54207)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.45 using 59 PHA bins.
# Reduced chi-squared = 1.341 for 57 degrees of freedom
# Null hypothesis probability = 4.371825e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.322e-07 5.857e-08
25- 50 9.718e-08 4.844e-08
50-150 2.005e-08 1.777e-08
15-150 2.494e-07 1.113e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.42516 (-4.42377 1.28022)
R1^2/D10^2 : 1.18973 (-1.19021 12.491)
kT2 [keV] : 22.5986 (-22.565 -22.565)
R2^2/D10^2 : 5.54782E-04 (-0.000557662 1.26209)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.84 using 59 PHA bins.
# Reduced chi-squared = 1.343 for 55 degrees of freedom
# Null hypothesis probability = 4.585146e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.393e-07 8.080e-08
25- 50 8.629e-08 4.721e-08
50-150 8.443e-08 6.003e-08
15-150 3.100e-07 1.605e-07
Peak spectrum fit
Power-law model
Time interval is from 22.148 sec. to 23.148 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.29395 ( -0.78954 1.03138 )
Norm@50keV : 2.26004E-03 ( -0.00139146 0.00136551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.05 using 59 PHA bins.
# Reduced chi-squared = 1.071 for 57 degrees of freedom
# Null hypothesis probability = 3.324652e-01
Photon flux (15-150 keV) in 1 sec: 0.393635 ( -0.173392 0.173493 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.15724e-08 ( -1.06913e-08 1.17693e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 22.148 sec. to 23.148 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.78235E-02 ( )
Epeak [keV] : 30.1192 ( )
Norm@50keV : 7.16409E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.29 using 59 PHA bins.
# Reduced chi-squared = 1.077 for 56 degrees of freedom
# Null hypothesis probability = 3.233031e-01
Photon flux (15-150 keV) in 1 sec: 0.368881 ( -0.174466 0.177919 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.74886e-08 ( -8.13528e-09 1.39139e-08 ) ergs/cm2
Band function
Time interval is from 22.148 sec. to 23.148 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.98084 ( -4.98084 -4.98084 )
beta : -2.50049 ( 2.50049 0.910159 )
Epeak [keV] : 20.6974 ( -20.6974 101.628 )
Norm@50keV : 1711.38 ( -739.094 1.16023e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.50 using 59 PHA bins.
# Reduced chi-squared = 1.100 for 55 degrees of freedom
# Null hypothesis probability = 2.838705e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.86445e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.08565 (-2.84695 4.21236)
R^2/D10^2 : 0.437601 (-0.4376 2.13608)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.26 using 59 PHA bins.
# Reduced chi-squared = 1.057 for 57 degrees of freedom
# Null hypothesis probability = 3.586489e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.214e-09 3.327e-09
25- 50 9.295e-09 6.055e-09
50-150 2.527e-09 2.358e-09
15-150 1.704e-08 1.118e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 37.9108 (-23.3637 149.025)
Norm : 2.69227 (-1.58165 4.34535)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.56 using 59 PHA bins.
# Reduced chi-squared = 1.063 for 57 degrees of freedom
# Null hypothesis probability = 3.485895e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.067e-09 3.959e-09
25- 50 7.795e-09 4.915e-09
50-150 5.681e-09 4.732e-09
15-150 1.954e-08 1.373e-08
Double BB
R1^2/D10^2 : 1.51552E-05 (-1.5155e-05 -1.5155e-05)
kT2 [keV] : 7.78247 (-2.40271 4.20477)
R2^2/D10^2 : 0.497108 (-0.413629 1.80901)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.19 using 59 PHA bins.
#Fit statistic : Chi-Squared = 60.01 using 59 PHA bins.
#Fit statistic : Chi-Squared = 59.99 using 59 PHA bins.
# Reduced chi-squared = 1.094 for 55 degrees of freedom
# Reduced chi-squared = 1.091 for 55 degrees of freedom
# Reduced chi-squared = 1.091 for 55 degrees of freedom
# Null hypothesis probability = 2.935668e-01
# Null hypothesis probability = 2.992000e-01
# Null hypothesis probability = 2.995641e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.553e-09 3.858e-09
25- 50 8.992e-09 6.485e-09
50-150 2.923e-09 2.546e-09
15-150 1.747e-08 1.257e-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: 2.99584 ( -0.585231 0.73188 )
Norm@50keV : 3.03527E-04 ( -0.000153171 0.000174523 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.94 using 59 PHA bins.
# Reduced chi-squared = 1.332 for 57 degrees of freedom
# Null hypothesis probability = 4.751153e-02
Photon flux (15-150 keV) in 74.21 sec: 8.32181E-02 ( -0.0205244 0.0205559 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.7012e-07 ( -8.14937e-08 9.07039e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.47815E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 88.68 using 59 PHA bins.
# Reduced chi-squared = 1.584 for 56 degrees of freedom
# Null hypothesis probability = 3.526417e-03
Photon flux (15-150 keV) in 74.21 sec: 7.84151E-02 ( -0.0195319 0.0198912 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.06984e-07 ( -5.63477e-08 1.37467e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.98296 ( 1.0293 1.0293 )
beta : -3.61364 ( 3.5997 1.07782 )
Epeak [keV] : 18.4858 ( -12.4839 28.0047 )
Norm@50keV : 141.343 ( -141.814 765625 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.09 using 59 PHA bins.
# Reduced chi-squared = 1.347 for 55 degrees of freedom
# Null hypothesis probability = 4.403424e-02
Photon flux (15-150 keV) in 74.21 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 9.75e-08
S(50-100 keV) = 4.99e-08
T90 vs. Hardness ratio plot
T90 = 71.7959999442101 sec.
Hardness ratio (energy fluence ratio) = 0.511795
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.567184
Count Ratio (50-100 keV) / (15-25 keV) = 0.237036
Mask shadow pattern
IMX = 5.997340589838875E-01, IMY = 1.725111893635254E-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:
-12.599380 -0.712000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.4713 -60.6063 11.3 44.0 -120.0 -0.1587 -1.0 4.7 Cen X-3
186.8139 -62.8264 3.5 36.0 -120.6 0.2323 3.3 5.5 GX 301-2
245.0228 -15.6223 0.7 32.7 10.4 0.7449 16.4 2.7 Sco X-1
256.1269 -37.7230 9.0 12.0 47.5 -0.0480 -1.3 9.9 4U 1700-377
256.3870 -36.5965 4.9 13.1 46.2 0.0893 2.3 10.7 GX 349+2
263.0541 -24.5759 5.3 26.4 47.7 0.1104 2.2 10.5 GX 1+4
264.4901 -44.4303 6.0 11.8 93.4 0.0776 1.9 10.9 4U 1735-44
270.2988 -25.2245 9.3 28.8 61.0 0.0722 1.3 8.8 GX 5-1
270.4300 -25.8377 9.6 28.3 61.9 0.0675 1.2 8.9 GRS 1758-258
273.8729 -13.9540 5.2 40.3 56.7 -0.2665 -2.2 9.2 GX 17+2
275.9986 -30.3691 5.6 27.6 76.1 0.1172 2.1 3.8 H1820-303
284.9268 -25.0341 8.0 36.9 80.6 -0.1569 -1.4 9.0 HT1900.1-2455
262.8956 -33.7859 5.7 18.1 58.6 0.0885 2.0 5.5 GX 354-0
261.6753 -0.2869 2.1 49.3 34.1 0.9609 5.6 ------ UNKNOWN
209.9349 -10.0327 2.4 49.9 -36.7 0.5415 4.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.712000 73.500600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3019 -60.6314 186.8 44.1 -120.1 -0.0622 -0.1 0.6 Cen X-3
186.9227 -62.8459 6.2 35.9 -120.7 -0.8673 -1.9 8.6 GX 301-2
244.8942 -15.8121 0.0 32.6 10.2 0.5999 2.0 11.4 Sco X-1
256.1381 -37.7446 4.7 12.0 47.7 0.5899 2.5 9.3 4U 1700-377
256.3340 -36.6129 0.0 13.1 46.1 -0.4344 -1.8 12.4 GX 349+2
263.0165 -24.7377 134.5 26.2 47.8 -0.0284 -0.1 0.6 GX 1+4
264.9608 -44.5326 28.5 12.1 94.5 0.1069 0.4 10.6 4U 1735-44
270.4367 -25.0243 4.0 29.0 61.1 1.1120 2.9 8.9 GX 5-1
270.3130 -25.8909 8.3 28.2 61.8 -0.5115 -1.4 8.9 GRS 1758-258
273.8947 -13.9451 5.3 40.3 56.7 1.7526 2.2 8.5 GX 17+2
275.8521 -30.3806 6.2 27.6 75.9 -0.6689 -1.9 3.9 H1820-303
284.8313 -24.9339 40.2 36.9 80.3 0.2072 0.3 11.2 HT1900.1-2455
262.7827 -33.8251 6.8 18.0 58.5 -0.4993 -1.7 10.3 GX 354-0
322.9119 -47.6223 2.1 47.9 135.2 5.8680 5.4 ------ UNKNOWN
337.3868 -59.0885 2.1 49.8 154.0 5.2288 5.5 ------ UNKNOWN
151.9173 -66.4597 2.7 49.1 -132.0 5.4584 4.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
130.500600 219.710000
221.000000 963.055600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.6588 -62.7861 3.9 52.7 -170.5 8.3383 2.9 1.0 GX 301-2
244.9849 -15.6438 0.1 14.0 61.9 65.0168 77.2 0.4 Sco X-1
256.1143 -37.8190 3.6 28.5 121.0 3.9488 3.2 6.2 4U 1700-377
256.4098 -36.5339 8.0 28.1 118.4 -1.7570 -1.5 6.8 GX 349+2
262.8479 -24.6408 14.8 30.0 91.5 1.1564 0.8 10.8 GX 1+4
264.9414 -44.3970 5.1 37.7 124.9 -4.7850 -2.2 9.1 4U 1735-44
268.5066 -1.4442 5.4 41.0 54.3 -5.5724 -2.1 8.3 SW J1753.5-0127
270.3937 -24.9844 15.8 36.9 91.7 -1.8864 -0.7 8.2 GX 5-1
270.2492 -25.6758 8.3 36.7 92.9 3.2974 1.4 5.0 GRS 1758-258
263.1560 -33.8180 6.4 32.0 108.9 2.6686 1.8 8.4 GX 354-0
215.4931 -52.1726 4.1 34.8 -177.6 3.2106 2.8 ------ UNKNOWN
221.3132 -27.7686 3.2 12.0 -149.2 2.9942 3.6 ------ UNKNOWN
217.0106 -26.7192 2.5 14.6 -136.2 3.6071 4.6 ------ UNKNOWN
174.5869 -54.6244 2.7 54.8 -158.1 16.3136 4.3 ------ UNKNOWN
171.7581 -54.4240 2.9 56.4 -157.3 23.0054 4.0 ------ UNKNOWN
209.3112 26.5359 4.5 50.6 -39.3 11.0342 2.6 ------ UNKNOWN
Plot creation:
Fri Aug 4 23:22:46 EDT 2017