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
251.7930 -45.8773 0.0151 32.5 -15.7 0.0461 12.7 TRIG_00780203
------------------------------------------
Foreground time interval of the image:
0.000 0.016 (delta_t = 0.016 [sec])
Background time interval of the image:
-239.048 0.000 (delta_t = 239.048 [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 0.000 sec. to 0.016 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.64876 ( -0.275054 0.301946 )
Norm@50keV : 9.77106E-02 ( -0.0230318 0.0229391 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.80 using 59 PHA bins.
# Reduced chi-squared = 0.9614 for 57 degrees of freedom
# Null hypothesis probability = 5.580583e-01
Photon flux (15-150 keV) in 0.016 sec: 21.0859 ( -3.27857 3.27886 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.6345e-08 ( -2.85499e-09 2.9092e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.016 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 0.363239 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.67 using 59 PHA bins.
# Reduced chi-squared = 1.387 for 56 degrees of freedom
# Null hypothesis probability = 2.926881e-02
Photon flux (15-150 keV) in 0.016 sec: 21.4762 ( -3.3003 3.2921 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.40899e-08 ( -2.38565e-09 2.5235e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.016 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -4.03865 -5 )
beta : -3.92266 ( -1.72045 0.757529 )
Epeak [keV] : 24.5751 ( -2.90752 2.42157 )
Norm@50keV : 3.81624E+04 ( -5612.25 51232.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.77 using 59 PHA bins.
# Reduced chi-squared = 0.7594 for 55 degrees of freedom
# Null hypothesis probability = 9.057243e-01
Photon flux (15-150 keV) in 0.016 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] : 6.39703 (-0.763446 0.86908)
R^2/D10^2 : 65.7441 (-28.7111 49.3802)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.49 using 59 PHA bins.
# Reduced chi-squared = 0.8157 for 57 degrees of freedom
# Null hypothesis probability = 8.385368e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.236e-09 1.553e-09
25- 50 7.127e-09 1.818e-09
50-150 8.427e-10 4.472e-10
15-150 1.421e-08 3.112e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 24.9467 (-5.97382 8.51642)
Norm : 211.084 (-59.08 81.3241)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.78 using 59 PHA bins.
# Reduced chi-squared = 0.8733 for 57 degrees of freedom
# Null hypothesis probability = 7.402979e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.177e-09 1.167e-09
25- 50 6.322e-09 1.382e-09
50-150 2.680e-09 1.384e-09
15-150 1.518e-08 2.983e-09
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.12760 (-0.758345 0.886167)
R1^2/D10^2 : 77.1860 (-35.75 62.5097)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 1.06367E-03 (-0.000772587 0.000768932)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.74 using 59 PHA bins.
#Fit statistic : Chi-Squared = 41.66 using 59 PHA bins.
# Reduced chi-squared = 0.7589 for 55 degrees of freedom
# Reduced chi-squared = 0.7575 for 55 degrees of freedom
# Null hypothesis probability = 9.062538e-01
# Null hypothesis probability = 9.077381e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.386e-09 1.868e-09
25- 50 6.766e-09 2.070e-09
50-150 5.050e-09 2.481e-09
15-150 1.820e-08 5.134e-09
Peak spectrum fit
Power-law model
Time interval is from -0.490 sec. to 0.510 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.53670 ( -0.734583 1.1002 )
Norm@50keV : 2.06102E-03 ( -0.00137312 0.00142413 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.46 using 59 PHA bins.
# Reduced chi-squared = 0.7976 for 57 degrees of freedom
# Null hypothesis probability = 8.643123e-01
Photon flux (15-150 keV) in 1 sec: 0.414147 ( -0.176773 0.17736 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.08164e-08 ( -1.03568e-08 1.16389e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.490 sec. to 0.510 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.642018 ( )
Epeak [keV] : 26.6466 ( )
Norm@50keV : 3.17530E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.40 using 59 PHA bins.
# Reduced chi-squared = 0.7929 for 56 degrees of freedom
# Null hypothesis probability = 8.682293e-01
Photon flux (15-150 keV) in 1 sec: 0.415657 ( -0.172711 0.174133 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.9732e-08 ( -9.2114e-09 1.09911e-08 ) ergs/cm2
Band function
Time interval is from -0.490 sec. to 0.510 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.643663 ( -3.08198 0.839916 )
beta : -10.0000 ( 10 6.75016e-14 )
Epeak [keV] : 26.5650 ( -16.0089 725.827 )
Norm@50keV : 3.18268E-02 ( -0.0317839 233.456 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.40 using 59 PHA bins.
# Reduced chi-squared = 0.8073 for 55 degrees of freedom
# Null hypothesis probability = 8.459232e-01
Photon flux (15-150 keV) in 1 sec: 0.416749 ( 6.58325 -0.17387 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.98688e-08 ( -1.98618e-08 -9.3007e-09 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.83172 (-3.48316 4.6807)
R^2/D10^2 : 0.529644 (-0.524897 5.51991)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.15 using 59 PHA bins.
# Reduced chi-squared = 0.7920 for 57 degrees of freedom
# Null hypothesis probability = 8.716988e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.780e-09 3.667e-09
25- 50 9.746e-09 6.330e-09
50-150 2.385e-09 2.132e-09
15-150 1.791e-08 1.205e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 32.1287 (-32.1152 58.7506)
Norm : 3.28540 (-1.8166 5.15203)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.52 using 59 PHA bins.
# Reduced chi-squared = 0.7810 for 57 degrees of freedom
# Null hypothesis probability = 8.856167e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.914e-09 4.336e-09
25- 50 8.196e-09 5.345e-09
50-150 4.902e-09 4.218e-09
15-150 2.001e-08 1.408e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.99172 (-4.0089 38.0963)
R1^2/D10^2 : 4.97567 (-5.04234 -5.04234)
kT2 [keV] : 11.2108 (-11.2224 -11.2224)
R2^2/D10^2 : 8.92011E-02 (-0.0891751 3.18025)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.11 using 59 PHA bins.
#Fit statistic : Chi-Squared = 44.10 using 59 PHA bins.
# Reduced chi-squared = 0.8020 for 55 degrees of freedom
# Reduced chi-squared = 0.8017 for 55 degrees of freedom
# Null hypothesis probability = 8.534238e-01
# Null hypothesis probability = 8.538154e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.839e-09 4.013e-09
25- 50 8.380e-09 5.410e-09
50-150 5.072e-09 4.236e-09
15-150 2.029e-08 1.156e-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: 2.64876 ( -0.275054 0.301946 )
Norm@50keV : 9.77106E-02 ( -0.0230318 0.0229391 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.80 using 59 PHA bins.
# Reduced chi-squared = 0.9614 for 57 degrees of freedom
# Null hypothesis probability = 5.580583e-01
Photon flux (15-150 keV) in 0.016 sec: 21.0859 ( -3.27857 3.27886 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.6345e-08 ( -2.85499e-09 2.9092e-09 ) 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 : 0.363239 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.67 using 59 PHA bins.
# Reduced chi-squared = 1.387 for 56 degrees of freedom
# Null hypothesis probability = 2.926881e-02
Photon flux (15-150 keV) in 0.016 sec: 21.4762 ( -3.3003 3.2921 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.40899e-08 ( -2.38565e-09 2.5235e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -4.03865 -5 )
beta : -3.92266 ( -1.72045 0.757529 )
Epeak [keV] : 24.5751 ( -2.90752 2.42157 )
Norm@50keV : 3.81624E+04 ( -5612.25 51232.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.77 using 59 PHA bins.
# Reduced chi-squared = 0.7594 for 55 degrees of freedom
# Null hypothesis probability = 9.057243e-01
Photon flux (15-150 keV) in 0.016 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) = 5.48e-09
S(50-100 keV) = 3.50e-09
T90 vs. Hardness ratio plot
T90 = 0.015999972820282 sec.
Hardness ratio (energy fluence ratio) = 0.638686
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.915701
Count Ratio (50-100 keV) / (15-25 keV) = 0.252846
Mask shadow pattern
IMX = 6.137197956002516E-01, IMY = 1.725760703058427E-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:
-239.048000 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5641 -40.5732 1.9 44.0 168.0 2.9257 6.1 2.0 Vela X-1
170.7071 -60.6144 5.4 14.8 162.7 0.4487 2.1 11.5 Cen X-3
186.8340 -62.8394 2.9 6.9 158.3 0.9074 4.0 6.4 GX 301-2
255.9999 -37.8598 0.9 40.7 -20.0 4.3548 13.3 1.1 4U 1700-377
256.5317 -36.5141 14.6 42.1 -20.6 0.2774 0.8 7.2 GX 349+2
263.0318 -24.7383 8.7 55.0 -22.7 1.0923 1.3 1.3 GX 1+4
264.4716 -44.4673 0.0 39.5 -5.9 -1.1029 -3.1 11.7 4U 1735-44
270.2360 -25.0044 628.8 58.1 -15.8 -0.0199 -0.0 5.2 GX 5-1
270.1531 -25.7237 4.8 57.4 -15.5 -2.3979 -2.4 8.2 GRS 1758-258
276.0214 -30.4046 7.5 56.2 -7.3 1.3137 1.5 5.5 H1820-303
263.0048 -33.7344 15.9 47.4 -16.7 0.3383 0.7 6.1 GX 354-0
233.8398 -57.2357 0.2 16.8 -11.8 11.4615 52.0 ------ UNKNOWN
268.5010 -28.3539 2.1 54.4 -15.3 3.7069 5.6 ------ UNKNOWN
164.8215 -20.1251 2.2 49.1 -147.6 3.6134 5.3 ------ UNKNOWN
157.0421 -16.2249 2.6 55.5 -154.3 5.4183 4.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.016000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5369 -40.4980 5.5 44.1 168.0 0.0121 2.1 3.4 Vela X-1
169.9740 -60.5979 14.2 15.1 162.3 0.0023 0.8 10.2 Cen X-3
186.8346 -62.9660 0.0 6.9 157.3 -0.0013 -0.5 12.7 GX 301-2
255.7792 -37.7984 22.5 40.7 -20.3 0.0023 0.5 10.2 4U 1700-377
256.6248 -36.4721 5.9 42.2 -20.6 0.0094 2.0 9.6 GX 349+2
262.9698 -24.6756 5.4 55.0 -22.8 0.0237 2.1 4.7 GX 1+4
264.7649 -44.4116 4.4 39.7 -5.7 -0.0109 -2.6 2.5 4U 1735-44
270.2520 -25.1345 5.7 58.0 -15.7 -0.0313 -2.0 3.7 GX 5-1
270.2400 -25.7422 8.1 57.5 -15.4 0.0197 1.4 3.4 GRS 1758-258
275.9363 -30.3871 4.1 56.2 -7.3 -0.0322 -2.8 1.3 H1820-303
262.9103 -33.7501 8.4 47.3 -16.7 -0.0081 -1.4 6.4 GX 354-0
135.8635 -37.1321 2.0 46.7 171.2 0.0389 5.8 ------ UNKNOWN
286.2826 -38.2197 2.4 54.4 6.6 0.0562 4.9 ------ UNKNOWN
251.7931 -45.8773 0.9 32.5 -15.7 0.0461 12.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
73.052600 655.422000
656.952000 963.036600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2376 -60.5724 4.0 47.5 -164.6 6.3321 2.9 3.8 Cen X-3
186.5950 -62.6553 6.0 39.5 -164.8 2.4747 1.9 7.1 GX 301-2
244.9855 -15.6395 0.2 30.7 -38.7 71.5489 60.6 0.4 Sco X-1
255.9925 -37.8338 0.5 8.6 -2.9 23.1820 24.2 0.7 4U 1700-377
256.4269 -36.4224 2.8 10.1 -3.8 4.2742 4.1 0.4 GX 349+2
263.0191 -24.7915 3.7 22.9 1.3 3.1428 3.1 2.8 GX 1+4
264.7194 -44.2897 14.4 9.3 59.2 -0.7846 -0.8 9.7 4U 1735-44
268.2309 -1.5287 6.0 46.6 -2.9 3.5559 1.9 9.4 SW J1753.5-0127
270.3137 -25.1086 2.5 25.5 16.2 4.8470 4.6 2.4 GX 5-1
270.4425 -25.7366 4.4 25.0 17.1 2.9303 2.7 7.6 GRS 1758-258
274.1297 -14.0539 7.5 36.9 12.1 1.9537 1.5 7.3 GX 17+2
275.9559 -30.4286 3.5 24.3 33.3 3.4062 3.3 4.0 H1820-303
284.8901 -24.7512 0.0 33.9 37.1 2.2819 1.6 12.9 HT1900.1-2455
263.0029 -33.8427 28.3 14.7 13.7 -0.4197 -0.4 0.8 GX 354-0
255.6399 -48.7413 2.1 3.9 113.4 4.9698 5.4 ------ UNKNOWN
233.8236 -57.2318 0.3 15.9 -168.2 40.4327 42.7 ------ UNKNOWN
258.5600 -22.5431 3.1 23.9 -10.2 3.6320 3.7 ------ UNKNOWN
252.9512 13.0798 3.1 58.9 -24.5 22.3257 3.8 ------ UNKNOWN
Plot creation:
Fri Oct 20 12:22:57 EDT 2017