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
275.0301 +7.2996 0.0349 0.1 158.6 -6.5470 -5.5 TRIG_00814090
------------------------------------------
Foreground time interval of the image:
-209.916 292.181 (delta_t = 502.097 [sec])
Background time interval of the image:
-239.520 -209.916 (delta_t = 29.604 [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 2.048000
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 2.048000
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 2.048000
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
Multiple GTIs in the spectrum
tstart tstop
-209.916000 350.562700
351.480000 422.128000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.58417 ( -0.0657469 0.0658571 )
Norm@50keV : 1.79939E-03 ( -6.00058e-05 5.99274e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.96 using 59 PHA bins.
# Reduced chi-squared = 1.052 for 57 degrees of freedom
# Null hypothesis probability = 3.689336e-01
Photon flux (15-150 keV) in 631.1 sec: 0.230111 ( -0.00831353 0.00835922 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.06413e-05 ( -3.77865e-07 3.79528e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-209.916000 350.562700
351.480000 422.128000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.58440 ( -0.209275 0.0648253 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 1.80197E-03 ( -5.96005e-05 0.000443984 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.97 using 59 PHA bins.
# Reduced chi-squared = 1.071 for 56 degrees of freedom
# Null hypothesis probability = 3.337109e-01
Photon flux (15-150 keV) in 631.1 sec: 0.230138 ( -0.008459 0.008196 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.83065e-16 ( 0 0 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-209.916000 350.562700
351.480000 422.128000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.30053 ( 1.30153 1.30153 )
beta : -1.58415 ( -0.065939 0.0657031 )
Epeak [keV] : 32.4672 ( -31.8089 -31.8089 )
Norm@50keV : 3.48879E-03 ( -0.00124275 0.249213 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.96 using 59 PHA bins.
# Reduced chi-squared = 1.090 for 55 degrees of freedom
# Null hypothesis probability = 3.006755e-01
Photon flux (15-150 keV) in 631.1 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] : 15.3635 ( )
R^2/D10^2 : 2.21303E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 280.37 using 59 PHA bins.
# Reduced chi-squared = 4.9187 for 57 degrees of freedom
# Null hypothesis probability = 3.078795e-31
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.873e-07 5.058e-08
25- 50 2.791e-06 1.231e-07
50-150 4.530e-06 3.042e-07
15-150 8.009e-06 3.124e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-32.2007 -200)
Norm : 0.921290 (-0.0304018 0.0304018)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.64 using 59 PHA bins.
# Reduced chi-squared = 1.152 for 57 degrees of freedom
# Null hypothesis probability = 2.023278e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.448e-06 5.901e-08
25- 50 2.785e-06 1.149e-07
50-150 6.107e-06 2.262e-07
15-150 1.034e-05 4.355e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.00308 (-0.857857 0.936606)
R1^2/D10^2 : 0.248282 (-0.0871274 0.152129)
kT2 [keV] : 27.5989 (-3.36829 4.88186)
R2^2/D10^2 : 2.31292E-03 (-0.000993318 0.00138593)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.76 using 59 PHA bins.
# Reduced chi-squared = 1.305 for 55 degrees of freedom
# Null hypothesis probability = 6.402076e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.418e-06 1.521e-07
25- 50 2.781e-06 2.054e-07
50-150 6.299e-06 7.718e-07
15-150 1.050e-05 8.835e-07
Peak spectrum fit
Power-law model
Time interval is from 374.464 sec. to 375.464 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.72346 ( -0.520698 0.537064 )
Norm@50keV : 6.41721E-03 ( -0.00191943 0.00181381 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.67 using 59 PHA bins.
# Reduced chi-squared = 0.6959 for 57 degrees of freedom
# Null hypothesis probability = 9.608871e-01
Photon flux (15-150 keV) in 1 sec: 0.859387 ( -0.227308 0.227813 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.9312e-08 ( -1.76971e-08 1.83847e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 374.464 sec. to 375.464 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.71909 ( -1.16806 0.543069 )
Epeak [keV] : 9999.32 ( -9999.35 -9999.36 )
Norm@50keV : 6.43231E-03 ( -0.00193841 0.0213493 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.67 using 59 PHA bins.
# Reduced chi-squared = 0.7084 for 56 degrees of freedom
# Null hypothesis probability = 9.516107e-01
Photon flux (15-150 keV) in 1 sec: 0.863254 ( -0.115969 0.224456 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.91276e-08 ( -1.76242e-08 1.91354e-08 ) ergs/cm2
Band function
Time interval is from 374.464 sec. to 375.464 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.96089 ( -4.96089 -4.96089 )
beta : -1.81009 ( -0.813483 0.570027 )
Epeak [keV] : 21.7727 ( -21.7727 46.9511 )
Norm@50keV : 1887.22 ( -486.724 8.60533e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.37 using 59 PHA bins.
# Reduced chi-squared = 0.7158 for 55 degrees of freedom
# Null hypothesis probability = 9.447473e-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] : 10.2186 (-3.99075 10.3775)
R^2/D10^2 : 0.345141 (-0.332221 2.00624)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.89 using 59 PHA bins.
# Reduced chi-squared = 0.8402 for 57 degrees of freedom
# Null hypothesis probability = 7.995364e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.392e-09 4.573e-09
25- 50 1.894e-08 1.126e-08
50-150 1.052e-08 7.661e-09
15-150 3.686e-08 2.250e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 160.180 (-158.382 -158.382)
Norm : 3.43935 (-0.946179 1.90898)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.52 using 59 PHA bins.
# Reduced chi-squared = 0.7109 for 57 degrees of freedom
# Null hypothesis probability = 9.515263e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.781e-09 5.160e-09
25- 50 1.643e-08 9.525e-09
50-150 3.330e-08 2.030e-08
15-150 5.851e-08 3.474e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.71862 (-1.93905 3.47778)
R1^2/D10^2 : 2.75457 (-2.24844 7.14655)
kT2 [keV] : 36.2914 (-32.5159 -36.2961)
R2^2/D10^2 : 3.83157E-03 (-0.0036438 0.0193591)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.78 using 59 PHA bins.
# Reduced chi-squared = 0.6868 for 55 degrees of freedom
# Null hypothesis probability = 9.631638e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.183e-08 6.895e-09
25- 50 1.460e-08 8.060e-09
50-150 3.964e-08 2.372e-08
15-150 6.607e-08 3.609e-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: 1.59514 ( -0.0667113 0.0668882 )
Norm@50keV : 1.83820E-03 ( -6.38182e-05 6.37028e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.27 using 59 PHA bins.
# Reduced chi-squared = 1.250 for 57 degrees of freedom
# Null hypothesis probability = 9.682512e-02
Photon flux (15-150 keV) in 502.1 sec: 0.235863 ( -0.00872361 0.00876508 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.63677e-06 ( -3.19326e-07 3.20874e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.48587 ( -0.267363 0.149371 )
Epeak [keV] : 242.885 ( -242.886 -242.886 )
Norm@50keV : 2.07576E-03 ( -0.000290409 0.000696991 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.74 using 59 PHA bins.
# Reduced chi-squared = 1.263 for 56 degrees of freedom
# Null hypothesis probability = 8.884058e-02
Photon flux (15-150 keV) in 502.1 sec: 0.233881 ( -0.009761 0.009767 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.55764e-06 ( -3.73512e-07 3.70098e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.37709 ( 1.18522 1.18522 )
beta : -1.66610 ( -0.568002 0.107696 )
Epeak [keV] : 127.831 ( -75.4432 -75.4432 )
Norm@50keV : 2.39572E-03 ( -0.000657906 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.51 using 59 PHA bins.
# Reduced chi-squared = 1.282 for 55 degrees of freedom
# Null hypothesis probability = 7.760907e-02
Photon flux (15-150 keV) in 502.1 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) = 2.74e-06
S(50-100 keV) = 3.65e-06
T90 vs. Hardness ratio plot
T90 = 134.143999934196 sec.
Hardness ratio (energy fluence ratio) = 1.33212
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.18527
Count Ratio (50-100 keV) / (15-25 keV) = 0.8683
Mask shadow pattern
IMX = -2.334650978052372E-03, IMY = -9.167773946785155E-04
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
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:
-239.520000 -209.916000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9780 -15.6295 0.8 37.5 48.4 2.4230 14.6 0.7 Sco X-1
254.6191 35.2753 5.5 33.8 145.1 -0.2824 -2.1 8.9 Her X-1
256.0017 -37.7933 5.8 48.3 16.2 0.3621 2.0 3.1 4U 1700-377
256.3590 -36.3680 6.1 46.9 16.7 0.3141 1.9 5.0 GX 349+2
263.0354 -24.8991 5.8 34.1 15.7 -0.2069 -2.0 9.3 GX 1+4
264.8085 -44.3988 5.1 52.4 5.2 -0.5195 -2.3 4.2 4U 1735-44
268.3750 -1.4191 4.4 10.9 34.1 -0.1925 -2.6 2.1 SW J1753.5-0127
270.2202 -25.1880 13.2 32.7 4.1 0.0765 0.9 7.4 GX 5-1
270.4410 -25.7586 10.5 33.2 3.6 -0.0984 -1.1 7.5 GRS 1758-258
273.9009 -14.0049 5.0 21.2 -0.9 0.1821 2.3 6.4 GX 17+2
275.9402 -30.5176 4.3 37.7 -5.3 -0.2784 -2.7 9.1 H1820-303
284.8983 -24.8808 6.1 33.4 -20.4 0.1794 1.9 7.9 HT1900.1-2455
288.7960 10.9029 2.2 14.1 -110.5 0.4032 5.3 2.6 GRS 1915+105
299.5707 35.1878 1.2 35.9 -148.8 1.0568 9.5 1.3 Cyg X-1
308.1363 41.0355 5.8 44.8 -148.3 0.3294 2.0 5.1 Cyg X-3
262.9895 -33.8303 516.9 42.6 10.9 0.0029 0.0 0.3 GX 354-0
257.7136 -0.7240 2.3 19.0 62.2 0.4014 5.0 ------ UNKNOWN
279.3141 60.7128 2.4 53.6 178.5 1.5260 4.8 ------ UNKNOWN
275.0705 7.2180 0.7 0.1 172.8 1.2070 16.3 ------ UNKNOWN
291.5515 -3.1832 2.5 19.4 -62.4 0.3977 4.6 ------ UNKNOWN
297.7748 37.3950 2.2 36.6 -153.1 0.5783 5.3 ------ UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-209.916000 292.180600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9920 -15.7052 3.1 37.6 48.3 9.9016 3.7 4.0 Sco X-1
254.5227 35.2791 9.8 33.9 145.0 2.4201 1.2 5.0 Her X-1
255.8580 -37.7664 8.2 48.4 16.3 -4.3767 -1.4 7.7 4U 1700-377
256.3298 -36.3624 5.1 46.9 16.7 -6.0088 -2.2 6.3 GX 349+2
263.0532 -24.8770 4.1 34.1 15.6 4.6696 2.8 8.2 GX 1+4
264.7927 -44.4178 12.8 52.4 5.2 3.3253 0.9 2.9 4U 1735-44
268.3468 -1.5285 4.2 11.0 33.9 3.1604 2.7 4.7 SW J1753.5-0127
270.2420 -25.2261 10.3 32.7 4.1 -1.5921 -1.1 9.1 GX 5-1
270.2781 -25.8915 5.4 33.4 3.8 3.0519 2.1 9.0 GRS 1758-258
273.8758 -13.9778 14.3 21.2 -0.8 -0.9635 -0.8 8.3 GX 17+2
275.9816 -30.5193 4.8 37.7 -5.3 3.8052 2.4 9.6 H1820-303
284.9011 -24.8569 5.6 33.4 -20.4 -3.0405 -2.1 8.3 HT1900.1-2455
288.6344 10.8358 6.6 13.9 -110.4 -2.1800 -1.8 11.7 GRS 1915+105
299.5908 35.2021 32.7 36.0 -148.8 0.6098 0.4 0.0 Cyg X-1
307.9492 40.9529 6.9 44.7 -148.4 4.4176 1.7 7.3 Cyg X-3
263.1124 -34.0034 0.0 42.7 10.6 2.7790 1.3 11.8 GX 354-0
289.1356 55.1780 2.6 49.3 -173.5 13.4176 4.4 ------ UNKNOWN
291.8900 -16.3622 2.3 28.8 -39.2 7.7448 5.1 ------ UNKNOWN
307.1891 33.0146 2.9 39.4 -139.4 8.3978 4.0 ------ UNKNOWN
298.6599 -39.2284 2.3 51.3 -27.4 16.0520 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
356.280590 404.080600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9798 -15.6518 0.5 23.8 114.9 3.3111 25.3 0.7 Sco X-1
255.8005 -37.8625 3.0 12.5 37.7 0.3960 3.8 8.9 4U 1700-377
256.5474 -36.2884 16.8 11.1 41.7 0.0706 0.7 9.7 GX 349+2
263.1628 -24.6094 199.1 5.3 141.1 0.0062 0.1 11.7 GX 1+4
264.9295 -44.3120 5.9 15.4 -0.4 -0.1927 -1.9 11.5 4U 1735-44
268.4633 -1.4602 4.9 27.6 179.9 0.2767 2.4 5.7 SW J1753.5-0127
270.4437 -25.1914 4.4 5.2 -140.4 0.2665 2.6 11.0 GX 5-1
270.4612 -25.8998 0.0 4.7 -134.4 0.2241 2.3 12.7 GRS 1758-258
273.9703 -14.0226 5.1 16.5 -157.9 0.2393 2.3 2.2 GX 17+2
275.9492 -30.3640 7.8 8.4 -82.7 0.1515 1.5 1.3 H1820-303
285.1878 -24.7683 0.0 17.2 -104.3 0.0529 0.4 12.3 HT1900.1-2455
288.7350 10.8665 4.9 45.3 -152.8 0.5144 2.3 6.0 GRS 1915+105
263.0579 -33.7942 3.2 5.6 25.7 0.3775 3.6 4.2 GX 354-0
243.7435 -18.4396 2.4 23.2 107.5 0.6527 4.7 ------ UNKNOWN
213.0618 -77.4149 2.4 54.1 8.0 1.8578 4.9 ------ UNKNOWN
275.0939 7.1898 1.2 37.1 -170.1 1.3566 10.0 ------ UNKNOWN
288.3947 -35.4638 2.8 19.6 -69.6 0.4802 4.1 ------ UNKNOWN
290.5122 22.4034 3.5 56.4 -157.5 2.0416 3.3 ------ UNKNOWN
311.3298 -22.1002 3.1 40.8 -93.5 1.8172 3.8 ------ UNKNOWN
Plot creation:
Wed Mar 14 19:47:42 EDT 2018