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
320.7108 -48.3492 0.0533 37.2 -168.5 0.0127 3.6 TRIG_00931384
------------------------------------------
Foreground time interval of the image:
0.000 0.032 (delta_t = 0.032 [sec])
Background time interval of the image:
-60.848 -6.848 (delta_t = 54.000 [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 0.032000
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 0.032000
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 0.032000
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 0.032 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.21046 ( 1.18663 1.18663 )
Norm@50keV : 6.14462E-04 ( -0.000619223 0.00253144 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.37 using 59 PHA bins.
# Reduced chi-squared = 1.340 for 57 degrees of freedom
# Null hypothesis probability = 4.430521e-02
Photon flux (15-150 keV) in 0.032 sec: 0.157187 ( -0.157153 0.295003 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.35373e-10 ( -8.35373e-10 1.36901e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 0.0 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
# Reduced chi-squared = 1.387 for 56 degrees of freedom
# Null hypothesis probability = 2.935855e-02
Photon flux (15-150 keV) in 0.032 sec: 0.391769 0.410388 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.59735e-15 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -9.37167 ( 8.86622 8.86622 )
Epeak [keV] : 178.081 ( )
Norm@50keV : 4.68483E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.81 using 59 PHA bins.
# Reduced chi-squared = 1.378 for 55 degrees of freedom
# Null hypothesis probability = 3.291766e-02
Photon flux (15-150 keV) in 0.032 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] : 5.00000 (-5 -5)
R^2/D10^2 : 0.0 (0 0)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
# Reduced chi-squared = 1.362 for 57 degrees of freedom
# Null hypothesis probability = 3.586898e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.00000 (-7 -7)
Norm : 0.0 (0 0)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
# Reduced chi-squared = 1.362 for 57 degrees of freedom
# Null hypothesis probability = 3.586898e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 199.166 (-199.168 -199.168)
R1^2/D10^2 : 1.07727E-04 (-0.000105312 -0.000105312)
kT2 [keV] : 10.0000 (-10 -10)
R2^2/D10^2 : 0.0 (0 0)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
#Fit statistic : Chi-Squared = 76.45 using 59 PHA bins.
# Reduced chi-squared = 1.412 for 55 degrees of freedom
# Reduced chi-squared = 1.390 for 55 degrees of freedom
# Null hypothesis probability = 2.383148e-02
# Null hypothesis probability = 2.946361e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.21046 ( 1.18663 1.18663 )
Norm@50keV : 6.14462E-04 ( -0.000619223 0.00253144 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.37 using 59 PHA bins.
# Reduced chi-squared = 1.340 for 57 degrees of freedom
# Null hypothesis probability = 4.430521e-02
Photon flux (15-150 keV) in 0.032 sec: 0.157187 ( -0.157153 0.295003 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.35373e-10 ( -8.35373e-10 1.36901e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 0.0 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
# Reduced chi-squared = 1.387 for 56 degrees of freedom
# Null hypothesis probability = 2.935855e-02
Photon flux (15-150 keV) in 0.032 sec: 0.391769 0.410388 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.59735e-15 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -9.37167 ( 8.86622 8.86622 )
Epeak [keV] : 178.081 ( )
Norm@50keV : 4.68483E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.81 using 59 PHA bins.
# Reduced chi-squared = 1.378 for 55 degrees of freedom
# Null hypothesis probability = 3.291766e-02
Photon flux (15-150 keV) in 0.032 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] : 5.00000 (-5 -5)
R^2/D10^2 : 0.0 (0 0)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
# Reduced chi-squared = 1.362 for 57 degrees of freedom
# Null hypothesis probability = 3.586898e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.00000 (-7 -7)
Norm : 0.0 (0 0)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
# Reduced chi-squared = 1.362 for 57 degrees of freedom
# Null hypothesis probability = 3.586898e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 199.166 (-199.168 -199.168)
R1^2/D10^2 : 1.07727E-04 (-0.000105312 -0.000105312)
kT2 [keV] : 10.0000 (-10 -10)
R2^2/D10^2 : 0.0 (0 0)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
#Fit statistic : Chi-Squared = 76.45 using 59 PHA bins.
# Reduced chi-squared = 1.412 for 55 degrees of freedom
# Reduced chi-squared = 1.390 for 55 degrees of freedom
# Null hypothesis probability = 2.383148e-02
# Null hypothesis probability = 2.946361e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: -1.21046 ( 1.18663 1.18663 )
Norm@50keV : 6.14462E-04 ( -0.000619223 0.00253144 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.37 using 59 PHA bins.
# Reduced chi-squared = 1.340 for 57 degrees of freedom
# Null hypothesis probability = 4.430521e-02
Photon flux (15-150 keV) in 0.032 sec: 0.157187 ( -0.157153 0.295003 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.35373e-10 ( -8.35373e-10 1.36901e-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 : 0.0 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.65 using 59 PHA bins.
# Reduced chi-squared = 1.387 for 56 degrees of freedom
# Null hypothesis probability = 2.935855e-02
Photon flux (15-150 keV) in 0.032 sec: 0.391769 0.410388 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.59735e-15 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -9.37167 ( 8.86622 8.86622 )
Epeak [keV] : 178.081 ( )
Norm@50keV : 4.68483E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.81 using 59 PHA bins.
# Reduced chi-squared = 1.378 for 55 degrees of freedom
# Null hypothesis probability = 3.291766e-02
Photon flux (15-150 keV) in 0.032 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) = 2.22e-11
S(50-100 keV) = 2.04e-10
T90 vs. Hardness ratio plot
T90 = 0.031999945640564 sec.
Hardness ratio (energy fluence ratio) = 9.18919
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = -3.27534
Count Ratio (50-100 keV) / (15-25 keV) = -3.17826
Mask shadow pattern
IMX = -7.437898699985672E-01, IMY = 1.507094971746720E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
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:
-60.848000 -6.848000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
268.3357 -1.6028 5.0 43.8 -57.7 0.8722 2.3 9.2 SW J1753.5-0127
273.9074 -13.9825 4.8 36.4 -75.5 0.5465 2.4 6.6 GX 17+2
275.7725 -30.4683 9.1 37.6 -103.1 0.3620 1.3 10.0 H1820-303
284.8675 -24.9270 9.6 28.1 -99.3 -0.1719 -1.2 9.2 HT1900.1-2455
288.8091 10.8877 13.9 31.9 -23.2 -0.0902 -0.8 3.5 GRS 1915+105
299.5561 35.1985 1.7 48.5 9.1 1.3514 6.6 1.7 Cyg X-1
308.2309 40.8863 3.6 53.0 19.0 1.2745 3.2 6.8 Cyg X-3
344.5052 -18.8350 2.4 32.7 128.1 0.6782 4.8 ------ UNKNOWN
350.4104 -31.4880 2.6 40.9 146.6 0.8914 4.4 ------ UNKNOWN
308.2190 31.1708 2.2 43.3 18.1 0.8651 5.3 ------ UNKNOWN
314.0527 -41.0780 2.4 29.2 -162.5 0.4985 4.9 ------ UNKNOWN
333.4780 -63.8233 2.5 54.1 -170.0 1.3495 4.6 ------ UNKNOWN
273.4142 16.3983 3.3 47.0 -31.7 0.7568 3.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.032000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
268.2559 -1.6407 0.0 43.9 -57.8 0.0144 1.5 13.1 SW J1753.5-0127
274.1300 -13.8724 0.0 36.2 -75.3 0.0098 1.9 12.2 GX 17+2
275.7925 -30.3069 5.8 37.6 -102.9 0.0147 2.0 7.7 H1820-303
285.0372 -24.8479 5.1 27.9 -99.2 -0.0079 -2.3 4.4 HT1900.1-2455
288.9484 10.8643 18.1 31.8 -23.1 0.0018 0.6 10.1 GRS 1915+105
299.7356 35.1477 5.6 48.4 9.3 0.0111 2.1 7.8 Cyg X-1
307.9991 40.9569 7.2 53.0 18.8 0.0159 1.6 5.0 Cyg X-3
297.4983 -23.0941 2.2 17.1 -110.3 0.0131 5.3 ------ UNKNOWN
306.3167 -58.6877 2.3 46.8 -154.6 0.0260 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
65.652600 302.282000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
264.7705 -44.3319 5.8 38.0 -81.4 1.3376 2.0 7.2 4U 1735-44
270.4578 -24.9501 32.8 45.6 -53.5 0.3284 0.3 12.2 GX 5-1
270.2870 -25.8057 12.5 45.1 -54.5 0.8904 0.9 3.8 GRS 1758-258
273.9810 -14.1048 3.3 51.4 -40.5 4.3644 3.5 4.4 GX 17+2
275.9281 -30.3670 43.3 38.3 -54.6 0.1284 0.3 0.2 H1820-303
285.1012 -24.7717 4.8 36.5 -38.6 0.9076 2.4 9.6 HT1900.1-2455
36.8919 -47.3523 3.0 48.9 143.4 5.0130 3.9 ------ UNKNOWN
73.4639 -62.7822 3.2 56.9 174.0 5.1785 3.6 ------ UNKNOWN
304.9066 1.2481 2.3 51.4 3.8 2.8081 5.1 ------ UNKNOWN
302.5815 4.6586 2.8 55.3 2.0 3.5122 4.2 ------ UNKNOWN
300.3806 -37.8004 2.7 18.1 -37.9 1.0283 4.2 ------ UNKNOWN
262.8225 -76.8782 2.2 36.2 -136.8 2.0768 5.2 ------ UNKNOWN
283.5429 1.2111 2.3 59.1 -20.6 7.1219 5.1 ------ UNKNOWN
254.8730 -54.7832 3.0 39.9 -100.7 3.4955 3.8 ------ UNKNOWN
Plot creation:
Sat Oct 26 07:25:24 EDT 2019