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
274.4280 -16.1375 0.0253 12.7 71.8 0.0151 7.6 TRIG_00969823
------------------------------------------
Foreground time interval of the image:
0.000 0.004 (delta_t = 0.004 [sec])
Background time interval of the image:
-239.068 -45.418 (delta_t = 193.650 [sec])
-44.068 -3.068 (delta_t = 41.000 [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 0.004000
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 0.004000
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 0.004000
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 0.004 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.76869 ( -0.698929 0.679025 )
Norm@50keV : 8.57742E-02 ( -0.0397032 0.0432043 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 25.57 using 59 PHA bins.
# Reduced chi-squared = 0.4485 for 57 degrees of freedom
# Null hypothesis probability = 9.998968e-01
Photon flux (15-150 keV) in 0.004 sec: 20.0458 ( -6.31336 6.32331 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.74197e-09 ( -1.23499e-09 1.29249e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.004 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -6.31498 ( 6.36999 6.7285 )
Epeak [keV] : 25.1593 ( -4.83844 3.20677 )
Norm@50keV : 3.59172E+05 ( -446309 1.72109e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 21.28 using 59 PHA bins.
# Reduced chi-squared = 0.3799 for 56 degrees of freedom
# Null hypothesis probability = 9.999931e-01
Photon flux (15-150 keV) in 0.004 sec: 23.3794 ( -6.9893 6.9932 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.68929e-09 ( -1.06548e-09 1.06615e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.004 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.38550 ( 1.58157 1.58157 )
beta : -5.38079 ( 8.62136 18.2461 )
Epeak [keV] : 24.0405 ( -7.49755 4.23899 )
Norm@50keV : 1.70450E+04 ( -16862.9 22106.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 21.09 using 59 PHA bins.
# Reduced chi-squared = 0.3834 for 55 degrees of freedom
# Null hypothesis probability = 9.999902e-01
Photon flux (15-150 keV) in 0.004 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] : 5.71955 (-0.939299 1.14945)
R^2/D10^2 : 110.155 (-69.2048 148.707)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 22.64 using 59 PHA bins.
# Reduced chi-squared = 0.3971 for 57 degrees of freedom
# Null hypothesis probability = 9.999872e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.782e-09 1.041e-09
25- 50 1.598e-09 8.611e-10
50-150 1.198e-10 9.254e-11
15-150 3.500e-09 1.873e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 19.1505 (-6.75345 17.1532)
Norm : 270.608 (-154.215 251.203)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 24.70 using 59 PHA bins.
# Reduced chi-squared = 0.4333 for 57 degrees of freedom
# Null hypothesis probability = 9.999418e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.617e-09 7.891e-10
25- 50 1.368e-09 7.067e-10
50-150 3.806e-10 3.062e-10
15-150 3.365e-09 1.643e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.02370 (-1.10841 1.17636)
R1^2/D10^2 : 176.205 (-120.43 257.581)
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 5.01060E-03 (-0.00447945 0.210138)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 19.14 using 59 PHA bins.
# Reduced chi-squared = 0.3480 for 55 degrees of freedom
# Null hypothesis probability = 9.999983e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.772e-09 1.058e-09
25- 50 1.372e-09 8.462e-10
50-150 5.355e-09 4.038e-10
15-150 8.499e-09 2.424e-09
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.004 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.76869 ( -0.698929 0.679025 )
Norm@50keV : 8.57742E-02 ( -0.0397032 0.0432043 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 25.57 using 59 PHA bins.
# Reduced chi-squared = 0.4485 for 57 degrees of freedom
# Null hypothesis probability = 9.998968e-01
Photon flux (15-150 keV) in 0.004 sec: 20.0458 ( -6.31336 6.32331 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.74197e-09 ( -1.23499e-09 1.29249e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.004 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -6.31498 ( 6.36999 6.7285 )
Epeak [keV] : 25.1593 ( -4.83852 3.20677 )
Norm@50keV : 3.59172E+05 ( -446309 1.72179e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 21.28 using 59 PHA bins.
# Reduced chi-squared = 0.3799 for 56 degrees of freedom
# Null hypothesis probability = 9.999931e-01
Photon flux (15-150 keV) in 0.004 sec: 23.3794 ( -6.9893 6.9932 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.68929e-09 ( -1.06548e-09 1.06615e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.004 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.38550 ( 1.58157 1.58157 )
beta : -5.38079 ( 8.62136 18.2461 )
Epeak [keV] : 24.0405 ( -7.49755 4.23899 )
Norm@50keV : 1.70450E+04 ( -16862.9 22106.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 21.09 using 59 PHA bins.
# Reduced chi-squared = 0.3834 for 55 degrees of freedom
# Null hypothesis probability = 9.999902e-01
Photon flux (15-150 keV) in 0.004 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] : 5.71955 (-0.939299 1.14945)
R^2/D10^2 : 110.155 (-69.2048 148.707)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 22.64 using 59 PHA bins.
# Reduced chi-squared = 0.3971 for 57 degrees of freedom
# Null hypothesis probability = 9.999872e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.782e-09 9.786e-10
25- 50 1.598e-09 9.327e-10
50-150 1.198e-10 8.930e-11
15-150 3.500e-09 1.719e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 19.1505 (-6.75345 17.1532)
Norm : 270.608 (-154.215 251.203)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 24.70 using 59 PHA bins.
# Reduced chi-squared = 0.4333 for 57 degrees of freedom
# Null hypothesis probability = 9.999418e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.617e-09 7.874e-10
25- 50 1.368e-09 7.012e-10
50-150 3.806e-10 3.027e-10
15-150 3.365e-09 1.710e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.02370 (-1.10841 1.17636)
R1^2/D10^2 : 176.205 (-120.43 263.661)
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 5.01060E-03 (-0.00447945 0.202664)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 19.14 using 59 PHA bins.
# Reduced chi-squared = 0.3480 for 55 degrees of freedom
# Null hypothesis probability = 9.999983e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.772e-09 1.078e-09
25- 50 1.372e-09 8.446e-10
50-150 5.355e-09 8.066e-11
15-150 8.499e-09 2.326e-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: 2.76869 ( -0.698929 0.679025 )
Norm@50keV : 8.57742E-02 ( -0.0397032 0.0432043 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 25.57 using 59 PHA bins.
# Reduced chi-squared = 0.4485 for 57 degrees of freedom
# Null hypothesis probability = 9.998968e-01
Photon flux (15-150 keV) in 0.004 sec: 20.0458 ( -6.31336 6.32331 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.74197e-09 ( -1.23499e-09 1.29249e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -6.31498 ( 6.36999 6.7285 )
Epeak [keV] : 25.1593 ( -4.83864 3.20676 )
Norm@50keV : 3.59172E+05 ( -446309 1.72216e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 21.28 using 59 PHA bins.
# Reduced chi-squared = 0.3799 for 56 degrees of freedom
# Null hypothesis probability = 9.999931e-01
Photon flux (15-150 keV) in 0.004 sec: 23.3794 ( -6.9893 6.9932 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.68929e-09 ( -1.06548e-09 1.06615e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.38550 ( 1.58157 1.58157 )
beta : -5.38079 ( 8.62136 18.2461 )
Epeak [keV] : 24.0405 ( -7.49755 4.23899 )
Norm@50keV : 1.70450E+04 ( -16862.9 22106.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 21.09 using 59 PHA bins.
# Reduced chi-squared = 0.3834 for 55 degrees of freedom
# Null hypothesis probability = 9.999902e-01
Photon flux (15-150 keV) in 0.004 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) = 1.26e-09
S(50-100 keV) = 7.38e-10
T90 vs. Hardness ratio plot
T90 = 0.00400006771087646 sec.
Hardness ratio (energy fluence ratio) = 0.585714
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.667323
Count Ratio (50-100 keV) / (15-25 keV) = 0.235395
Mask shadow pattern
IMX = 7.042060190954912E-02, IMY = -2.145419938804635E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.004000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.004000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.004000
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:
-239.068000 -45.418000
-44.068000 -3.068000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9594 -15.6077 1.9 39.5 96.6 6.9022 6.0 2.3 Sco X-1
254.3255 35.3547 9.4 52.1 169.8 1.3285 1.2 6.5 Her X-1
255.9773 -37.8403 1.4 39.3 57.9 6.3370 8.1 0.5 4U 1700-377
256.4732 -36.3480 3.7 38.0 59.3 2.3501 3.1 4.9 GX 349+2
262.9487 -24.7950 7.2 26.5 69.9 0.6788 1.6 4.4 GX 1+4
264.8712 -44.4137 6.2 40.0 43.2 1.1860 1.9 5.9 4U 1735-44
268.3058 -1.6335 76.7 17.6 132.4 -0.0465 -0.1 11.5 SW J1753.5-0127
270.1795 -24.9574 3.2 21.7 59.0 1.2278 3.6 9.3 GX 5-1
270.4746 -25.8036 3.9 22.1 57.0 1.0314 3.0 10.0 GRS 1758-258
274.1190 -14.0682 6.6 11.9 80.8 0.5213 1.7 6.9 GX 17+2
276.0622 -30.4841 11.5 23.7 39.9 0.3406 1.0 10.0 H1820-303
284.8666 -24.8186 5.9 16.6 20.5 0.5143 2.0 11.1 HT1900.1-2455
288.9259 10.8336 11.0 19.5 -146.1 0.2855 1.0 10.1 GRS 1915+105
299.7752 35.1807 173.5 45.7 -141.5 -0.0409 -0.1 9.2 Cyg X-1
263.0926 -33.6859 9.3 32.3 56.1 -0.6293 -1.2 10.3 GX 354-0
327.6745 -48.6186 2.0 54.2 -12.6 4.2492 5.7 ------ UNKNOWN
276.0145 49.2959 3.0 58.0 -165.4 5.1157 3.9 ------ UNKNOWN
308.4600 36.7160 2.7 50.2 -133.9 7.2429 4.3 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.004000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9556 -15.7663 8.0 39.5 96.4 -0.0119 -1.4 7.7 Sco X-1
254.4843 35.5336 0.0 52.2 170.0 -0.0119 -1.6 11.5 Her X-1
255.8471 -37.9753 0.0 39.5 57.9 -0.0078 -1.3 10.3 4U 1700-377
256.2960 -36.4236 44.9 38.2 59.4 0.0014 0.3 6.7 GX 349+2
262.8059 -24.6479 0.0 26.5 70.4 -0.0046 -1.5 12.5 GX 1+4
264.8956 -44.5767 10.0 40.2 43.1 0.0058 1.2 10.0 4U 1735-44
268.4390 -1.2691 4.0 17.6 133.7 0.0060 2.9 11.8 SW J1753.5-0127
270.4005 -24.9325 12.8 21.5 58.6 0.0021 0.9 10.8 GX 5-1
270.0934 -25.6461 0.0 22.2 57.9 0.0027 1.1 12.7 GRS 1758-258
274.0038 -14.0995 5.4 12.0 80.9 0.0044 2.1 3.8 GX 17+2
275.7901 -30.4630 36.9 23.7 40.4 0.0007 0.3 9.0 H1820-303
284.8250 -24.8328 0.0 16.6 20.6 0.0014 0.7 12.6 HT1900.1-2455
288.9722 10.9108 8.3 19.6 -146.0 -0.0027 -1.4 10.5 GRS 1915+105
299.4008 35.2297 4.8 45.6 -141.9 -0.0100 -2.4 9.4 Cyg X-1
262.9251 -33.9102 5.6 32.5 56.0 0.0071 2.1 5.5 GX 354-0
274.4280 -16.1375 1.5 12.7 71.8 0.0151 7.6 ------ UNKNOWN
308.6846 -30.3995 2.3 31.6 -21.0 0.0109 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
46.032640 698.932590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9698 -15.6541 1.0 28.4 95.4 16.5469 12.2 1.0 Sco X-1
254.3589 35.2577 22.4 54.9 168.4 1.5461 0.5 7.0 Her X-1
255.9833 -37.7741 1.2 27.1 42.0 8.4304 9.4 4.2 4U 1700-377
256.2652 -36.5181 6.5 26.0 43.6 -1.6253 -1.8 10.0 GX 349+2
263.0022 -24.7433 102.5 13.8 58.1 0.0860 0.1 0.4 GX 1+4
264.9077 -44.3011 0.0 29.3 22.7 1.6429 1.8 11.4 4U 1735-44
268.3018 -1.4119 25.2 16.0 165.4 0.3228 0.5 4.7 SW J1753.5-0127
270.2885 -25.0939 3.1 9.8 31.7 2.4828 3.8 0.9 GX 5-1
270.3103 -25.6909 2.8 10.3 30.2 3.0365 4.6 3.2 GRS 1758-258
274.0439 -13.9917 3.3 2.2 176.6 2.5060 3.5 3.5 GX 17+2
275.7445 -30.3143 8.0 14.2 4.2 -1.0956 -1.5 9.9 H1820-303
284.9510 -24.9898 6.1 13.2 -37.6 -1.2478 -1.9 6.2 HT1900.1-2455
288.6713 10.8775 7.7 30.4 -143.2 1.5305 1.5 8.5 GRS 1915+105
262.9696 -33.7059 2.7 20.4 37.1 3.2558 4.3 7.8 GX 354-0
232.3978 -13.0835 2.3 40.8 97.1 11.8880 5.0 ------ UNKNOWN
282.3732 -37.6989 3.3 22.6 -7.8 2.5328 3.5 ------ UNKNOWN
310.1013 -27.9755 3.6 34.9 -55.5 3.7309 3.2 ------ UNKNOWN
309.8578 10.2049 2.9 43.8 -116.1 14.5641 3.9 ------ UNKNOWN
306.6593 20.0334 3.2 48.0 -129.2 12.8285 3.6 ------ UNKNOWN
Plot creation:
Thu May 7 16:54:25 EDT 2020