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
293.7275 +21.8914 0.0021 12.0 -120.5 4.7825 93.7 TRIG_00686761
------------------------------------------
Foreground time interval of the image:
-0.072 0.096 (delta_t = 0.168 [sec])
Background time interval of the image:
-239.244 -0.072 (delta_t = 239.172 [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 0.016000
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 0.016000
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 0.016000
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 -0.072 sec. to 0.096 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.24866 ( )
Norm@50keV : 0.873192 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 1114.72 using 59 PHA bins.
# Reduced chi-squared = 19.5565 for 57 degrees of freedom
# Null hypothesis probability = 5.298077e-196
Photon flux (15-150 keV) in 0.168 sec: 289.424 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.99656e-06 ( 0 0 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.072 sec. to 0.096 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.241560 ( -0.266435 0.253222 )
Epeak [keV] : 29.5420 ( -1.28799 1.1803 )
Norm@50keV : 64.2241 ( -17.1506 24.9553 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.12 using 59 PHA bins.
# Reduced chi-squared = 1.074 for 56 degrees of freedom
# Null hypothesis probability = 3.290575e-01
Photon flux (15-150 keV) in 0.168 sec: 232.329 ( -8.019 8.103 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.84187e-06 ( 0 0 ) ergs/cm2
Band function
Time interval is from -0.072 sec. to 0.096 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.237143 ( -0.239013 0.281906 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 29.5151 ( -1.2685 1.20242 )
Norm@50keV : 63.9143 ( -16.7599 25.5357 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.12 using 59 PHA bins.
# Reduced chi-squared = 1.093 for 55 degrees of freedom
# Null hypothesis probability = 2.955675e-01
Photon flux (15-150 keV) in 0.168 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] : 8.65223 ( )
R^2/D10^2 : 194.090 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 130.78 using 59 PHA bins.
# Reduced chi-squared = 2.2943 for 57 degrees of freedom
# Null hypothesis probability = 9.984940e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.650e-07 1.806e-08
25- 50 9.283e-07 2.134e-08
50-150 3.134e-07 1.294e-08
15-150 1.707e-06 3.830e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.3858 ( )
Norm : 2583.22 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 205.77 using 59 PHA bins.
# Reduced chi-squared = 3.6101 for 57 degrees of freedom
# Null hypothesis probability = 1.074447e-18
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.027e-07 2.495e-08
25- 50 8.308e-07 1.831e-08
50-150 3.613e-07 1.386e-08
15-150 1.995e-06 4.368e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.09721 (-0.852644 0.812092)
R1^2/D10^2 : 477.039 (-127.055 255.022)
kT2 [keV] : 10.6720 (-0.75452 1.18042)
R2^2/D10^2 : 44.7650 (-25.4812 32.9941)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.95 using 59 PHA bins.
# Reduced chi-squared = 1.054 for 55 degrees of freedom
# Null hypothesis probability = 3.670847e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.828e-07 5.947e-08
25- 50 9.013e-07 7.896e-08
50-150 3.444e-07 4.964e-08
15-150 1.829e-06 1.695e-07
Peak spectrum fit
Power-law model
Time interval is from -0.486 sec. to 0.514 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.00450 ( )
Norm@50keV : 0.172940 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 682.57 using 59 PHA bins.
# Reduced chi-squared = 11.975 for 57 degrees of freedom
# Null hypothesis probability = 5.262400e-108
Photon flux (15-150 keV) in 1 sec: 47.7171 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.08222e-06 ( 0 0 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.486 sec. to 0.514 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.165448 ( -0.296652 0.282391 )
Epeak [keV] : 29.3748 ( -1.40573 1.25808 )
Norm@50keV : 9.71383 ( -2.9075 4.41524 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.99 using 59 PHA bins.
# Reduced chi-squared = 1.071 for 56 degrees of freedom
# Null hypothesis probability = 3.330984e-01
Photon flux (15-150 keV) in 1 sec: 39.2562 ( -1.3826 1.3971 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.85301e-06 ( 0 0 ) ergs/cm2
Band function
Time interval is from -0.486 sec. to 0.514 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.434609 ( -0.420301 0.329406 )
beta : -5.41709 ( -1.05985 0.452095 )
Epeak [keV] : 30.0230 ( -1.46127 0.901632 )
Norm@50keV : 13.9860 ( -5.07049 7.74099 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.75 using 59 PHA bins.
# Reduced chi-squared = 1.014 for 55 degrees of freedom
# Null hypothesis probability = 4.462507e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.85418e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.58626 ( )
R^2/D10^2 : 33.8319 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 123.70 using 59 PHA bins.
# Reduced chi-squared = 2.1702 for 57 degrees of freedom
# Null hypothesis probability = 7.735324e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.730e-07 1.920e-08
25- 50 9.325e-07 2.185e-08
50-150 3.074e-07 1.350e-08
15-150 1.713e-06 3.950e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 26.9234 ( )
Norm : 404.330 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 159.37 using 59 PHA bins.
# Reduced chi-squared = 2.7960 for 57 degrees of freedom
# Null hypothesis probability = 1.264511e-11
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.753e-07 2.735e-08
25- 50 8.322e-07 2.005e-08
50-150 3.935e-07 1.690e-08
15-150 2.001e-06 4.250e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.46117 (-0.98398 0.849981)
R1^2/D10^2 : 73.5394 (-18.4371 37.6015)
kT2 [keV] : 11.4407 (-1.28458 2.52588)
R2^2/D10^2 : 4.63522 (-3.52225 6.47288)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.76 using 59 PHA bins.
# Reduced chi-squared = 1.032 for 55 degrees of freedom
# Null hypothesis probability = 4.093440e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.780e-07 5.575e-08
25- 50 9.046e-07 9.705e-08
50-150 3.533e-07 9.865e-08
15-150 1.836e-06 2.340e-07
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: 3.24866 ( )
Norm@50keV : 0.873192 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 1114.72 using 59 PHA bins.
# Reduced chi-squared = 19.5565 for 57 degrees of freedom
# Null hypothesis probability = 5.298077e-196
Photon flux (15-150 keV) in 0.168 sec: 289.424 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.99656e-06 ( 0 0 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.241560 ( -0.266435 0.253222 )
Epeak [keV] : 29.5420 ( -1.28799 1.1803 )
Norm@50keV : 64.2241 ( -17.1506 24.9553 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.12 using 59 PHA bins.
# Reduced chi-squared = 1.074 for 56 degrees of freedom
# Null hypothesis probability = 3.290575e-01
Photon flux (15-150 keV) in 0.168 sec: 232.329 ( -8.019 8.103 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.84187e-06 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.237143 ( -0.239013 0.281906 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 29.5151 ( -1.2685 1.20242 )
Norm@50keV : 63.9143 ( -16.7599 25.5357 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.12 using 59 PHA bins.
# Reduced chi-squared = 1.093 for 55 degrees of freedom
# Null hypothesis probability = 2.955675e-01
Photon flux (15-150 keV) in 0.168 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) = 6.48e-07
S(50-100 keV) = 2.72e-07
T90 vs. Hardness ratio plot
T90 = 0.12799996137619 sec.
Hardness ratio (energy fluence ratio) = 0.419753
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.0642
Count Ratio (50-100 keV) / (15-25 keV) = 0.219181
Mask shadow pattern
IMX = -1.076574603843445E-01, IMY = 1.828344656944240E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
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:
-239.244000 -0.072000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4393 35.2001 5.5 39.6 170.7 0.8308 2.1 8.6 Her X-1
268.2697 -1.5700 6.8 23.9 97.0 -0.5308 -1.7 9.2 SW J1753.5-0127
270.3151 -24.9847 183.0 40.1 63.6 -0.0508 -0.1 5.9 GX 5-1
270.2891 -25.7288 9.9 40.8 63.1 0.9846 1.2 1.1 GRS 1758-258
274.0677 -14.0144 2.8 28.9 67.9 1.5896 4.1 3.8 GX 17+2
275.6724 -30.3335 0.0 43.1 53.8 1.0296 1.2 13.2 H1820-303
285.0405 -24.9135 86.3 36.0 43.0 0.0584 0.1 0.5 HT1900.1-2455
288.7536 10.9563 1.2 0.1 175.6 2.2813 9.8 2.7 GRS 1915+105
299.5886 35.2040 0.4 26.2 -122.7 8.1138 28.4 0.2 Cyg X-1
308.1770 40.8508 4.5 34.5 -116.6 1.0522 2.5 6.8 Cyg X-3
276.1395 -17.7668 3.2 31.3 60.9 1.3476 3.6 ------ UNKNOWN
280.4751 -8.7570 2.3 21.3 60.4 1.3414 5.1 ------ UNKNOWN
301.5906 -21.4697 3.7 34.7 15.9 1.0029 3.1 ------ UNKNOWN
299.2571 -17.7199 3.5 30.4 17.2 0.9045 3.3 ------ UNKNOWN
253.4434 52.2823 2.9 50.3 -170.3 2.5417 4.0 ------ UNKNOWN
243.7743 56.7223 2.7 57.4 -170.3 5.2523 4.3 ------ UNKNOWN
307.9748 54.9437 3.3 46.6 -127.9 3.6498 3.5 ------ UNKNOWN
332.1681 18.9994 2.9 42.5 -69.2 4.1618 4.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.072000 0.096000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4586 35.3424 34.7 39.6 170.9 -0.0286 -0.3 0.0 Her X-1
268.2171 -1.4149 4.6 23.9 97.4 -0.1764 -2.5 9.3 SW J1753.5-0127
270.2916 -25.0872 6.4 40.2 63.6 0.3355 1.8 0.6 GX 5-1
270.3530 -25.8397 116.6 40.9 62.9 -0.0193 -0.1 6.4 GRS 1758-258
274.0526 -14.1673 14.9 29.0 67.8 -0.0658 -0.8 8.3 GX 17+2
275.9762 -30.3496 7.8 43.0 53.4 0.2984 1.5 2.8 H1820-303
285.1745 -24.8571 158.5 35.9 42.8 0.0074 0.1 8.4 HT1900.1-2455
288.9591 10.8769 69.9 0.1 -57.7 0.0087 0.2 10.3 GRS 1915+105
299.4921 35.2546 5.5 26.2 -122.9 -0.1236 -2.1 5.8 Cyg X-1
308.1178 40.9798 8.6 34.6 -116.8 0.1224 1.3 1.7 Cyg X-3
302.8289 -32.4375 2.4 45.3 20.4 0.5181 4.8 ------ UNKNOWN
245.8418 39.7262 2.3 47.7 171.9 0.6469 5.0 ------ UNKNOWN
293.7275 21.8914 0.1 12.0 -120.5 4.7822 93.7 ------ UNKNOWN
335.2736 -6.1752 2.0 49.3 -34.9 0.8442 5.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
42.656590 320.056600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4737 35.1529 172.7 36.7 152.1 0.0329 0.1 11.4 Her X-1
268.4636 -1.5380 7.5 34.0 81.8 0.8455 1.5 7.7 SW J1753.5-0127
273.8862 -14.1203 7.8 40.9 62.3 1.3431 1.5 8.6 GX 17+2
284.8026 -24.8630 6.8 47.5 43.1 -1.8365 -1.7 13.2 HT1900.1-2455
288.7657 10.9401 1.3 11.9 56.4 2.2611 8.9 2.0 GRS 1915+105
299.6013 35.1977 0.3 14.3 -128.1 10.4457 40.2 0.6 Cyg X-1
308.0680 40.9946 3.2 22.6 -118.8 1.1081 3.6 3.2 Cyg X-3
326.1981 38.1958 5.7 32.3 -95.7 0.9417 2.0 7.7 Cyg X-2
252.1874 11.1157 2.7 41.1 113.8 4.3597 4.3 ------ UNKNOWN
319.3614 -20.3786 2.6 49.1 -0.3 2.2924 4.4 ------ UNKNOWN
Plot creation:
Thu May 19 12:21:15 EDT 2016