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
267.7053 -31.9592 1.6614 18.5 165.9 0.1046 0.1 TRIG_00863053
------------------------------------------
Foreground time interval of the image:
0.000 251.450 (delta_t = 251.450 [sec])
253.000 760.000 (delta_t = 507.000 [sec])
Background time interval of the image:
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
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
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
0.000000 251.450000
253.000000 760.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.49437 ( -5.37129 -5.20314 )
Norm@50keV : 2.16336E-06 ( -1.93765e-06 8.9036e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.33 using 59 PHA bins.
# Reduced chi-squared = 0.9532 for 57 degrees of freedom
# Null hypothesis probability = 5.757180e-01
Photon flux (15-150 keV) in 758.5 sec: 7.27967E-03 5.48370E-03 ( -0.00726738 0.00589643 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.7959e-20 ( -1.26602e-07 5.32095e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 251.450000
253.000000 760.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.19919 ( -2.25129 5.18755 )
Epeak [keV] : 90.4598 ( )
Norm@50keV : 4.12047E-05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.59 using 59 PHA bins.
# Reduced chi-squared = 0.9749 for 56 degrees of freedom
# Null hypothesis probability = 5.282064e-01
Photon flux (15-150 keV) in 758.5 sec: 5.23788E-03 ( -0.00523788 0.00685932 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.26194e-19 ( 0 0 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 251.450000
253.000000 760.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.81013 ( 9.81013 9.81013 )
beta : -5.45910 ( 5.07525 5.07525 )
Epeak [keV] : 53.7020 ( -53.702 -53.702 )
Norm@50keV : 3.16360E-04 ( -0.000314027 0.0120467 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.33 using 59 PHA bins.
# Reduced chi-squared = 0.9878 for 55 degrees of freedom
# Null hypothesis probability = 5.001426e-01
Photon flux (15-150 keV) in 758.5 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] : 2.22926 (-2.1754 39.2218)
R^2/D10^2 : 6.23569 (-7.55717 -7.55717)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.29 using 59 PHA bins.
# Reduced chi-squared = 0.9525 for 57 degrees of freedom
# Null hypothesis probability = 5.773507e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.081e-07 7.028e-08
25- 50 4.884e-09 4.138e-09
50-150 4.686e-13 1.120e-12
15-150 1.130e-07 6.762e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 3.81982 (-3.72676 -3.72676)
Norm : 3.53402 (-3.93437 -3.93437)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.32 using 59 PHA bins.
# Reduced chi-squared = 0.9530 for 57 degrees of freedom
# Null hypothesis probability = 5.761868e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.052e-07 6.205e-08
25- 50 6.752e-09 5.328e-09
50-150 7.400e-12 1.115e-11
15-150 1.119e-07 7.282e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.99437 (-1.71474 2.92128)
R1^2/D10^2 : 12.6873 (-16.5702 -16.6)
kT2 [keV] : 18.9962 (-18.8211 -18.8211)
R2^2/D10^2 : 2.60931E-04 (-0.000269624 0.00181351)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.18 using 59 PHA bins.
#Fit statistic : Chi-Squared = 52.15 using 59 PHA bins.
# Reduced chi-squared = 0.9486 for 55 degrees of freedom
# Reduced chi-squared = 0.9482 for 55 degrees of freedom
# Null hypothesis probability = 5.832439e-01
# Null hypothesis probability = 5.841418e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.091e-07 5.306e-08
25- 50 6.898e-08 5.275e-08
50-150 1.816e-07 1.451e-07
15-150 3.597e-07 2.385e-07
Peak spectrum fit
Power-law model
Time interval is from 253.000 sec. to 760.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.49437 ( -5.37129 -5.20314 )
Norm@50keV : 2.16336E-06 ( -1.93765e-06 8.9036e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.33 using 59 PHA bins.
# Reduced chi-squared = 0.9532 for 57 degrees of freedom
# Null hypothesis probability = 5.757180e-01
Photon flux (15-150 keV) in 758.5 sec: 7.27967E-03 5.48370E-03 ( -0.00726738 0.00589643 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.7959e-20 ( -1.26602e-07 5.32095e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 253.000 sec. to 760.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.19919 ( -2.25129 5.2281 )
Epeak [keV] : 90.4598 ( )
Norm@50keV : 4.12047E-05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.59 using 59 PHA bins.
# Reduced chi-squared = 0.9749 for 56 degrees of freedom
# Null hypothesis probability = 5.282064e-01
Photon flux (15-150 keV) in 758.5 sec: 5.23788E-03 ( -0.00523788 0.00685932 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.26194e-19 ( 0 0 ) ergs/cm2
Band function
Time interval is from 253.000 sec. to 760.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.81013 ( 9.81013 9.81013 )
beta : -5.45910 ( 5.07525 5.07525 )
Epeak [keV] : 53.7020 ( -53.702 -53.702 )
Norm@50keV : 3.16360E-04 ( -0.000314027 0.0120467 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.33 using 59 PHA bins.
# Reduced chi-squared = 0.9878 for 55 degrees of freedom
# Null hypothesis probability = 5.001426e-01
Photon flux (15-150 keV) in 758.5 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] : 2.22926 (-2.1754 39.2218)
R^2/D10^2 : 6.23569 (-7.55717 -7.55717)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.29 using 59 PHA bins.
# Reduced chi-squared = 0.9525 for 57 degrees of freedom
# Null hypothesis probability = 5.773507e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.081e-07 6.167e-08
25- 50 4.884e-09 3.630e-09
50-150 4.686e-13 9.212e-13
15-150 1.130e-07 7.801e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 3.81982 (-3.72676 -3.72676)
Norm : 3.53402 (-3.93437 -3.93437)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.32 using 59 PHA bins.
# Reduced chi-squared = 0.9530 for 57 degrees of freedom
# Null hypothesis probability = 5.761868e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.052e-07 7.119e-08
25- 50 6.752e-09 7.638e-09
50-150 7.400e-12 1.167e-11
15-150 1.119e-07 6.789e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.92249 (-2.11626 2.79079)
R1^2/D10^2 : 18.0797 (-18.0775 0)
kT2 [keV] : 18.8679 (-18.8468 -18.8468)
R2^2/D10^2 : 2.68924E-04 (-0.000269978 0.00131319)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.18 using 59 PHA bins.
#Fit statistic : Chi-Squared = 52.13 using 59 PHA bins.
# Reduced chi-squared = 0.9486 for 55 degrees of freedom
# Reduced chi-squared = 0.9479 for 55 degrees of freedom
# Null hypothesis probability = 5.832439e-01
# Null hypothesis probability = 5.848012e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.091e-07 5.173e-08
25- 50 6.898e-08 4.505e-08
50-150 1.816e-07 1.577e-07
15-150 3.597e-07 2.314e-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: 5.49437 ( -5.37129 -5.20314 )
Norm@50keV : 2.16336E-06 ( -1.93765e-06 8.9036e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.33 using 59 PHA bins.
# Reduced chi-squared = 0.9532 for 57 degrees of freedom
# Null hypothesis probability = 5.757180e-01
Photon flux (15-150 keV) in 758.5 sec: 7.27967E-03 5.48370E-03 ( -0.00726738 0.00589643 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.7959e-20 ( -1.26602e-07 5.32095e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.19919 ( -2.25129 4.13341 )
Epeak [keV] : 90.4598 ( )
Norm@50keV : 4.12047E-05 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.59 using 59 PHA bins.
# Reduced chi-squared = 0.9749 for 56 degrees of freedom
# Null hypothesis probability = 5.282064e-01
Photon flux (15-150 keV) in 758.5 sec: 5.23788E-03 ( -0.00523788 0.00685932 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.26194e-19 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.81013 ( 9.81013 9.81013 )
beta : -5.45910 ( 5.07525 5.07525 )
Epeak [keV] : 53.7020 ( -53.702 -53.702 )
Norm@50keV : 3.16360E-04 ( -0.000314027 0.0120467 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.33 using 59 PHA bins.
# Reduced chi-squared = 0.9878 for 55 degrees of freedom
# Null hypothesis probability = 5.001426e-01
Photon flux (15-150 keV) in 758.5 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) = 8.78e-087.15e-081.84e-08
S(50-100 keV) = 5.32e-083.37e-082.52e-081.44e-09
T90 vs. Hardness ratio plot
T90 = 760 sec.
Hardness ratio (energy fluence ratio) = 6059.23
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.247401
Count Ratio (50-100 keV) / (15-25 keV) = 0.955449
Mask shadow pattern
IMX = -3.238422376452048E-01, IMY = -8.155472285324107E-02
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 251.450000
253.000000 760.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9865 -15.6412 0.2 16.6 -96.0 46.5156 50.1 0.4 Sco X-1
254.4433 35.1915 6.4 49.9 -7.0 3.3148 1.8 9.1 Her X-1
256.1593 -38.0001 0.0 24.3 -167.5 -1.1107 -1.1 12.4 4U 1700-377
256.2618 -36.5430 7.3 22.9 -166.8 1.5068 1.6 11.0 GX 349+2
262.9452 -24.6543 10.3 10.5 176.7 -0.9467 -1.1 6.5 GX 1+4
264.7368 -44.4659 27.1 30.3 177.3 -0.4523 -0.4 1.0 4U 1735-44
268.3387 -1.3042 28.3 14.3 27.3 -0.3568 -0.4 9.1 SW J1753.5-0127
270.2991 -25.1033 3.3 13.3 147.0 2.8737 3.5 1.7 GX 5-1
270.4563 -25.7805 4.8 14.0 148.2 2.0497 2.4 8.6 GRS 1758-258
273.9953 -13.9143 6.4 11.6 91.0 1.5683 1.8 7.4 GX 17+2
275.9318 -30.2510 5.8 20.5 144.9 2.0769 2.0 7.0 H1820-303
284.8589 -24.8091 0.0 23.9 120.9 -1.1270 -1.0 11.7 HT1900.1-2455
288.6667 10.8819 8.1 36.4 48.9 2.9131 1.4 8.6 GRS 1915+105
263.1606 -33.8800 6.4 19.7 178.4 -1.5010 -1.8 9.0 GX 354-0
289.5600 -31.4465 3.7 30.5 130.2 4.4238 3.2 ------ UNKNOWN
266.5722 -32.2257 2.1 18.5 169.0 4.9793 5.4 ------ UNKNOWN
238.0129 24.2010 3.9 45.0 -30.6 4.5587 3.0 ------ UNKNOWN
221.7676 -60.9629 2.7 55.0 -156.3 14.7035 4.3 ------ UNKNOWN
222.6218 3.3484 3.2 42.9 -67.7 14.9774 3.7 ------ UNKNOWN
215.1492 -39.0701 2.8 48.0 -129.2 16.8899 4.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
835.200600 846.700600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9992 -15.6647 1.5 38.2 -114.0 0.7511 7.8 1.9 Sco X-1
254.4807 35.2050 7.8 45.8 -33.5 0.1334 1.5 8.3 Her X-1
256.0991 -37.8096 14.1 41.9 -151.7 -0.0560 -0.8 5.7 4U 1700-377
256.2750 -36.4993 4.7 40.8 -150.5 -0.1695 -2.5 9.0 GX 349+2
263.0097 -24.7364 39.0 28.2 -144.5 -0.0136 -0.3 0.5 GX 1+4
264.5779 -44.5400 5.7 44.2 -164.8 0.1517 2.0 8.9 4U 1735-44
268.2244 -1.3194 3.5 13.4 -85.5 -0.1323 -3.3 11.8 SW J1753.5-0127
270.2836 -25.1793 6.8 24.7 -157.2 0.0737 1.7 6.0 GX 5-1
270.4468 -25.8971 3.7 25.3 -158.3 0.1333 3.1 12.1 GRS 1758-258
274.0523 -13.8903 4.5 13.2 -148.5 -0.1009 -2.6 9.2 GX 17+2
275.8054 -30.5077 513.7 28.1 -171.6 0.0010 0.0 10.5 H1820-303
285.1959 -24.7723 0.0 22.1 169.0 0.0607 1.4 12.4 HT1900.1-2455
288.8201 10.8559 2.2 15.6 25.3 0.2069 5.1 5.5 GRS 1915+105
299.7275 35.1536 6.1 41.8 20.3 0.1415 1.9 7.3 Cyg X-1
308.0936 40.8944 5.8 50.1 23.9 0.2912 2.0 3.6 Cyg X-3
263.1212 -33.9783 14.6 35.5 -155.3 -0.0407 -0.8 10.8 GX 354-0
320.3358 3.8167 2.9 39.3 78.1 0.7281 4.0 ------ UNKNOWN
314.8963 -45.9116 2.9 51.9 148.7 0.8331 4.1 ------ UNKNOWN
250.9348 9.9705 1.8 33.1 -68.9 0.4058 6.4 ------ UNKNOWN
Plot creation:
Tue Sep 25 04:32:14 EDT 2018