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
271.6172 -22.2423 0.0173 12.0 -38.8 2.1799 11.1 TRIG_00745022
------------------------------------------
Foreground time interval of the image:
-79.000 65.000 (delta_t = 144.000 [sec])
Background time interval of the image:
-239.000 -79.000 (delta_t = 160.000 [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 -79.000 sec. to 65.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.20015 ( -0.709645 0.797877 )
Norm@50keV : 6.11578E-05 ( -3.45199e-05 5.96222e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.55 using 59 PHA bins.
# Reduced chi-squared = 0.8342 for 57 degrees of freedom
# Null hypothesis probability = 8.095236e-01
Photon flux (15-150 keV) in 144 sec: 0.114367 ( -0.0164695 0.0164733 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.19116e-07 ( -8.12248e-08 8.33312e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -79.000 sec. to 65.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.22556E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 133.92 using 59 PHA bins.
# Reduced chi-squared = 2.3915 for 56 degrees of freedom
# Null hypothesis probability = 2.491620e-08
Photon flux (15-150 keV) in 144 sec: 0.114257 ( -0.0164751 0.016402 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.18436e-07 ( -8.2967e-08 7.37568e-08 ) ergs/cm2
Band function
Time interval is from -79.000 sec. to 65.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.47945 ( 8.47945 8.47945 )
beta : -5.22129 ( -0.780291 0.727689 )
Epeak [keV] : 2.99021 ( -2.99021 -2.99021 )
Norm@50keV : 8.13431E-03 ( -0.00456557 0.00823288 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.55 using 59 PHA bins.
# Reduced chi-squared = 0.8646 for 55 degrees of freedom
# Null hypothesis probability = 7.520010e-01
Photon flux (15-150 keV) in 144 sec: 0.114254 ( 6.88575 -0.016443 ) 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] : 2.68373 (-0.399299 0.506716)
R^2/D10^2 : 33.3928 (-23.0719 76.4919)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.31 using 59 PHA bins.
# Reduced chi-squared = 0.9003 for 57 degrees of freedom
# Null hypothesis probability = 6.873273e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.348e-07 2.076e-07
25- 50 4.222e-08 2.382e-08
50-150 2.607e-11 2.810e-11
15-150 4.771e-07 2.421e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.29842 (-1.18932 1.74735)
Norm : 21.1755 (-12.588 34.7939)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.21 using 59 PHA bins.
# Reduced chi-squared = 0.8634 for 57 degrees of freedom
# Null hypothesis probability = 7.586814e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.291e-07 1.596e-07
25- 50 6.166e-08 3.233e-08
50-150 4.248e-10 4.183e-10
15-150 4.912e-07 1.708e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.19716E-04 (0.000181496 -0.000119716)
R1^2/D10^2 : 1124.84 (-1124.85 -1124.85)
kT2 [keV] : 2.68349 (-0.399199 0.506815)
R2^2/D10^2 : 33.4132 (-23.0705 76.4902)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.19 using 59 PHA bins.
#Fit statistic : Chi-Squared = 51.31 using 59 PHA bins.
# Reduced chi-squared = 1.113 for 55 degrees of freedom
# Reduced chi-squared = 0.9330 for 55 degrees of freedom
# Null hypothesis probability = 2.635284e-01
# Null hypothesis probability = 6.162304e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.633e-07 4.689e-02
25- 50 1.123e-07 3.878e-01
50-150 9.819e-10 9.338e+00
15-150 4.766e-07 1.026e+01
Peak spectrum fit
Power-law model
Time interval is from 8.500 sec. to 9.500 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.28717 ( -1.06727 1.83746 )
Norm@50keV : 1.05653E-03 ( -0.00105653 0.00140884 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.24 using 59 PHA bins.
# Reduced chi-squared = 1.145 for 57 degrees of freedom
# Null hypothesis probability = 2.121256e-01
Photon flux (15-150 keV) in 1 sec: 0.360758 ( -0.154796 0.156379 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.46845e-08 ( -7.6215e-09 9.70212e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 8.500 sec. to 9.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.88749 ( )
Epeak [keV] : 2.22132 ( )
Norm@50keV : 1.10019E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.21 using 59 PHA bins.
# Reduced chi-squared = 1.164 for 56 degrees of freedom
# Null hypothesis probability = 1.870720e-01
Photon flux (15-150 keV) in 1 sec: 0.358890 ( -0.152021 0.155822 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.39482e-08 ( -7.00879e-09 1.01582e-08 ) ergs/cm2
Band function
Time interval is from 8.500 sec. to 9.500 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.12296 ( 9.12296 9.12296 )
beta : -3.28716 ( -1.83924 1.06727 )
Epeak [keV] : 9.17808 ( -9.17808 -9.17808 )
Norm@50keV : 0.143598 ( -0.143598 0.19148 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.24 using 59 PHA bins.
# Reduced chi-squared = 1.186 for 55 degrees of freedom
# Null hypothesis probability = 1.625183e-01
Photon flux (15-150 keV) in 1 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] : 4.83311 (-2.37585 3.30651)
R^2/D10^2 : 3.56880 (-3.63488 141.644)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.16 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 57 degrees of freedom
# Null hypothesis probability = 1.901728e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.562e-09 4.611e-09
25- 50 4.538e-09 3.090e-09
50-150 1.561e-10 1.622e-10
15-150 1.226e-08 7.655e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.5450 (-9.18817 27.8882)
Norm : 6.77182 (-6.77055 42.8748)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.28 using 59 PHA bins.
# Reduced chi-squared = 1.145 for 57 degrees of freedom
# Null hypothesis probability = 2.111004e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.584e-09 4.913e-09
25- 50 5.015e-09 3.359e-09
50-150 8.296e-10 8.165e-10
15-150 1.343e-08 8.715e-09
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.34919 (-2.59131 8.50088)
R1^2/D10^2 : 114.350 (-65.8875 -65.8875)
kT2 [keV] : 7.46362 (-7.73451 -7.73451)
R2^2/D10^2 : 0.342158 (-0.362186 38.9828)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.81 using 59 PHA bins.
#Fit statistic : Chi-Squared = 64.77 using 59 PHA bins.
# Reduced chi-squared = 1.178 for 55 degrees of freedom
# Reduced chi-squared = 1.178 for 55 degrees of freedom
# Null hypothesis probability = 1.716000e-01
# Null hypothesis probability = 1.726136e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.403e-09 3.629e-09
25- 50 5.317e-09 2.995e-09
50-150 1.202e-09 1.148e-09
15-150 1.392e-08 8.660e-09
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: 5.20015 ( -0.709645 0.797877 )
Norm@50keV : 6.11578E-05 ( -3.45199e-05 5.96222e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.55 using 59 PHA bins.
# Reduced chi-squared = 0.8342 for 57 degrees of freedom
# Null hypothesis probability = 8.095236e-01
Photon flux (15-150 keV) in 144 sec: 0.114367 ( -0.0164695 0.0164733 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.19116e-07 ( -8.12248e-08 8.33312e-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 : 1.22556E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 133.92 using 59 PHA bins.
# Reduced chi-squared = 2.3915 for 56 degrees of freedom
# Null hypothesis probability = 2.491620e-08
Photon flux (15-150 keV) in 144 sec: 0.114257 ( -0.0164751 0.016402 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.18436e-07 ( -8.2967e-08 7.37568e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.47945 ( 8.47945 8.47945 )
beta : -5.22129 ( -0.780291 0.727689 )
Epeak [keV] : 2.99021 ( -2.99021 -2.99021 )
Norm@50keV : 8.13431E-03 ( -0.00456557 0.00823288 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.55 using 59 PHA bins.
# Reduced chi-squared = 0.8646 for 55 degrees of freedom
# Null hypothesis probability = 7.520010e-01
Photon flux (15-150 keV) in 144 sec: 0.114254 ( 6.88575 -0.016443 ) 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) = 9.03e-08
S(50-100 keV) = 9.82e-09
T90 vs. Hardness ratio plot
T90 = 112 sec.
Hardness ratio (energy fluence ratio) = 0.108749
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.211174
Count Ratio (50-100 keV) / (15-25 keV) = -9.70596e-05
Mask shadow pattern
IMX = 1.659984202477863E-01, IMY = 1.335109509860244E-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 -79.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9726 -15.6268 0.4 16.6 91.6 6.9033 27.7 0.9 Sco X-1
254.5490 35.4126 16.4 50.2 -179.6 -0.4433 -0.7 6.1 Her X-1
255.8520 -37.8201 2.9 24.2 20.5 0.9044 4.1 6.5 4U 1700-377
256.2381 -36.2863 0.0 22.6 20.8 0.4993 2.3 12.6 GX 349+2
262.9887 -24.7404 2.2 10.5 4.0 1.1475 5.2 1.1 GX 1+4
264.6191 -44.5394 7.4 30.3 4.9 -0.4294 -1.5 7.5 4U 1735-44
268.5372 -1.5636 6.4 14.2 -144.5 0.3987 1.8 12.1 SW J1753.5-0127
270.4692 -25.1766 10.1 13.4 -26.1 -0.2535 -1.2 11.6 GX 5-1
270.3103 -25.5891 4.7 13.7 -24.6 0.5446 2.6 9.2 GRS 1758-258
274.1436 -14.1591 4.3 11.7 -80.7 0.5774 2.7 10.9 GX 17+2
275.8908 -30.2929 5.7 20.4 -27.7 0.4583 2.0 4.8 H1820-303
284.9137 -25.0783 6.1 24.0 -51.3 0.4954 1.9 11.6 HT1900.1-2455
288.8288 10.9858 6.5 36.6 -123.8 0.7492 1.8 3.0 GRS 1915+105
262.9812 -33.8320 5.2 19.6 6.2 0.4660 2.2 0.4 GX 354-0
251.0688 9.2505 2.2 26.0 162.9 1.2715 5.3 ------ UNKNOWN
259.9210 -25.0216 0.7 10.9 18.9 3.7321 17.7 ------ UNKNOWN
296.9615 11.5622 3.1 43.1 -116.6 3.6591 3.8 ------ UNKNOWN
311.8314 -34.3828 2.5 49.0 -48.2 4.9472 4.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-79.000000 65.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1245 -15.4861 0.0 16.5 92.1 -0.2135 -0.9 12.5 Sco X-1
254.5710 35.2974 6.5 50.1 -179.6 -1.0912 -1.8 6.2 Her X-1
256.1863 -37.9818 0.0 24.3 19.8 0.4685 2.0 12.6 4U 1700-377
256.2381 -36.2863 0.0 22.6 20.8 -0.5507 -2.5 12.6 GX 349+2
263.0028 -24.7923 5.3 10.5 4.0 -0.4434 -2.2 2.8 GX 1+4
264.8872 -44.5852 5.2 30.4 4.5 0.5468 2.2 10.2 4U 1735-44
268.3868 -1.3666 11.1 14.3 -145.4 -0.2093 -1.0 5.3 SW J1753.5-0127
270.1556 -25.2558 0.0 13.3 -24.9 -0.0617 -0.3 12.7 GX 5-1
270.4922 -25.8596 0.0 14.0 -24.5 0.1504 0.8 12.4 GRS 1758-258
273.9029 -14.0942 27.0 11.4 -81.1 -0.0940 -0.4 6.9 GX 17+2
275.9047 -30.3685 7.9 20.5 -27.6 0.3059 1.5 1.1 H1820-303
284.8749 -24.9342 3.5 23.9 -51.6 -0.8417 -3.2 8.8 HT1900.1-2455
288.8456 10.8831 4.4 36.6 -123.7 0.9648 2.6 4.7 GRS 1915+105
263.0882 -33.6709 5.0 19.4 6.0 -0.4743 -2.3 11.0 GX 354-0
252.1990 -16.2396 2.2 9.8 85.6 1.1081 5.2 ------ UNKNOWN
271.6173 -22.2422 1.0 12.0 -38.8 2.1790 11.0 ------ UNKNOWN
272.3101 17.5596 2.6 33.4 -153.7 1.1355 4.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
110.100650 963.069600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9707 -15.6383 0.4 26.0 101.2 30.1330 27.4 0.5 Sco X-1
256.0658 -37.9184 1.6 20.6 38.0 5.1687 7.2 5.8 4U 1700-377
256.4678 -36.4419 2.7 19.3 40.5 3.4012 4.2 1.9 GX 349+2
263.0013 -24.7384 1.2 8.3 71.9 6.5110 9.3 0.6 GX 1+4
264.5550 -44.2913 0.0 22.8 14.2 -0.6232 -0.9 12.5 4U 1735-44
268.2283 -1.3050 0.0 21.2 171.8 0.6618 0.9 12.2 SW J1753.5-0127
270.4515 -25.2276 0.0 3.1 20.2 0.8579 1.1 12.7 GX 5-1
270.2860 -25.8931 19.6 3.8 18.9 0.4411 0.6 9.0 GRS 1758-258
273.9850 -14.0425 1.9 8.5 -163.0 4.0752 6.0 1.3 GX 17+2
275.8651 -30.4674 3.5 9.1 -23.0 2.6261 3.3 6.8 H1820-303
284.8927 -25.0781 73.5 12.5 -73.2 -0.1267 -0.2 12.3 HT1900.1-2455
288.7428 10.9324 3.0 37.2 -150.3 4.2508 3.9 3.4 GRS 1915+105
263.0089 -33.8399 4.6 13.8 32.3 2.1127 2.5 1.0 GX 354-0
259.9019 -25.0066 0.4 11.0 74.4 18.3201 27.4 ------ UNKNOWN
304.4094 -35.3182 3.6 31.4 -57.0 3.6432 3.2 ------ UNKNOWN
292.3224 30.5147 3.6 56.4 -157.4 18.3614 3.2 ------ UNKNOWN
305.3921 14.1857 4.0 49.2 -133.5 13.2757 2.9 ------ UNKNOWN
318.5027 -29.5278 3.8 42.5 -68.9 14.3420 3.0 ------ UNKNOWN
Plot creation:
Sun Apr 2 18:12:37 EDT 2017