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
293.7317 +21.8823 0.0190 34.2 77.7 0.1174 10.1 TRIG_00686443
------------------------------------------
Foreground time interval of the image:
-0.016 0.020 (delta_t = 0.036 [sec])
Background time interval of the image:
-239.260 -0.016 (delta_t = 239.244 [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 0.016000
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 0.016000
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 0.016000
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 -0.016 sec. to 0.020 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.98707 ( -0.394098 0.449953 )
Norm@50keV : 1.90176E-02 ( -0.00770539 0.00795124 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 96.74 using 59 PHA bins.
# Reduced chi-squared = 1.697 for 57 degrees of freedom
# Null hypothesis probability = 7.996933e-04
Photon flux (15-150 keV) in 0.036 sec: 11.6103 ( -3.19627 3.19987 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.4935e-08 ( -4.0847e-09 4.09212e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.016 sec. to 0.020 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.87473E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 128.50 using 59 PHA bins.
# Reduced chi-squared = 2.2947 for 56 degrees of freedom
# Null hypothesis probability = 1.260993e-07
Photon flux (15-150 keV) in 0.036 sec: 20.3005 ( -4.1134 4.1386 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.88945e-08 ( -5.49846e-09 5.49886e-09 ) ergs/cm2
Band function
Time interval is from -0.016 sec. to 0.020 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -1.36866 -5 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 23.3420 ( -1.57645 1.51129 )
Norm@50keV : 5.53961E+04 ( -10682.6 40106.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.60 using 59 PHA bins.
# Reduced chi-squared = 1.102 for 55 degrees of freedom
# Null hypothesis probability = 2.809119e-01
Photon flux (15-150 keV) in 0.036 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] : 5.00802 (-0.428039 0.41668)
R^2/D10^2 : 169.416 (-66.7284 102.801)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.38 using 59 PHA bins.
# Reduced chi-squared = 1.200 for 57 degrees of freedom
# Null hypothesis probability = 1.436534e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.493e-08 3.685e-09
25- 50 9.788e-09 2.686e-09
50-150 4.011e-10 2.056e-10
15-150 2.512e-08 5.783e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.4604 (-1.82761 2.1807)
Norm : 422.808 (-154.925 208.489)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.91 using 59 PHA bins.
# Reduced chi-squared = 1.437 for 57 degrees of freedom
# Null hypothesis probability = 1.698688e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.280e-08 3.560e-09
25- 50 6.554e-09 1.847e-09
50-150 6.393e-10 3.602e-10
15-150 1.999e-08 5.166e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.00795 (-0.427971 0.416748)
R1^2/D10^2 : 169.429 (-66.7403 102.789)
kT2 [keV] : 3.93769E-02 (-0.0393769 -0.0393769)
R2^2/D10^2 : 4.83808E-04 (-0.000483808 -0.000483808)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.38 using 59 PHA bins.
# Reduced chi-squared = 1.243 for 55 degrees of freedom
# Null hypothesis probability = 1.060795e-01
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 -0.496 sec. to 0.504 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.53371 ( -0.83042 1.21179 )
Norm@50keV : 4.33558E-03 ( -0.00433558 0.00293844 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.36 using 59 PHA bins.
# Reduced chi-squared = 1.164 for 57 degrees of freedom
# Null hypothesis probability = 1.855418e-01
Photon flux (15-150 keV) in 1 sec: 0.869600 ( -0.346647 0.346014 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.37586e-08 ( -2.14948e-08 2.35724e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.496 sec. to 0.504 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -8.30250 ( )
Epeak [keV] : 21.1707 ( )
Norm@50keV : 2.18499E+06 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.04 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 56 degrees of freedom
# Null hypothesis probability = 1.687015e-01
Photon flux (15-150 keV) in 1 sec: 0.869362 ( -0.346271 0.344758 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.3126e-08 ( -4.3126e-08 2.42303e-08 ) ergs/cm2
Band function
Time interval is from -0.496 sec. to 0.504 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.90815 ( 1.49576 1.49576 )
beta : -2.88099 ( 2.66705 0.939475 )
Epeak [keV] : 18.7766 ( -11.8017 -11.8017 )
Norm@50keV : 137.713 ( -138.272 10500.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.82 using 59 PHA bins.
# Reduced chi-squared = 1.197 for 55 degrees of freedom
# Null hypothesis probability = 1.506539e-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] : 4.78980 (-1.46737 2.32928)
R^2/D10^2 : 8.69027 (-8.69027 42.76)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.85 using 59 PHA bins.
# Reduced chi-squared = 1.173 for 57 degrees of freedom
# Null hypothesis probability = 1.747287e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.774e-08 1.107e-08
25- 50 1.041e-08 6.880e-09
50-150 3.422e-10 3.712e-10
15-150 2.849e-08 1.788e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 20.5207 (-13.1089 132.258)
Norm : 9.87381 (-9.75815 34.1509)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.33 using 59 PHA bins.
# Reduced chi-squared = 1.181 for 57 degrees of freedom
# Null hypothesis probability = 1.644581e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.565e-08 1.013e-08
25- 50 1.397e-08 8.975e-09
50-150 4.368e-09 4.603e-09
15-150 3.399e-08 2.247e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.48329 (-1.43627 1.93065)
R1^2/D10^2 : 11.0874 (-5.51205 65.5335)
kT2 [keV] : 36.2046 (-34.487 -35.9458)
R2^2/D10^2 : 2.26395E-03 (-0.00228345 0.0224412)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.58 using 59 PHA bins.
# Reduced chi-squared = 1.156 for 55 degrees of freedom
# Null hypothesis probability = 1.999876e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.748e-08 1.110e-08
25- 50 1.115e-08 6.765e-09
50-150 2.301e-08 1.543e-08
15-150 5.164e-08 2.463e-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: 3.98707 ( -0.394098 0.449953 )
Norm@50keV : 1.90176E-02 ( -0.00770539 0.00795124 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 96.74 using 59 PHA bins.
# Reduced chi-squared = 1.697 for 57 degrees of freedom
# Null hypothesis probability = 7.996933e-04
Photon flux (15-150 keV) in 0.036 sec: 11.6103 ( -3.19627 3.19987 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.4935e-08 ( -4.0847e-09 4.09212e-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 : 2.87473E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 128.50 using 59 PHA bins.
# Reduced chi-squared = 2.2947 for 56 degrees of freedom
# Null hypothesis probability = 1.260993e-07
Photon flux (15-150 keV) in 0.036 sec: 20.3005 ( -4.1134 4.1386 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.88945e-08 ( -5.49846e-09 5.49886e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -1.36866 -5 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 23.3420 ( -1.57645 1.51129 )
Norm@50keV : 5.53961E+04 ( -10682.6 40106.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.60 using 59 PHA bins.
# Reduced chi-squared = 1.102 for 55 degrees of freedom
# Null hypothesis probability = 2.809119e-01
Photon flux (15-150 keV) in 0.036 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) = 4.08e-09
S(50-100 keV) = 1.02e-09
T90 vs. Hardness ratio plot
T90 = 0.0279999375343323 sec.
Hardness ratio (energy fluence ratio) = 0.25
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.818863
Count Ratio (50-100 keV) / (15-25 keV) = 0.30194
Mask shadow pattern
IMX = 1.451002951008835E-01, IMY = -6.632310588058992E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
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:
-239.260000 -0.016000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.5906 35.1967 0.4 21.7 92.9 8.0324 28.2 0.3 Cyg X-1
308.1191 40.9420 2.0 13.2 101.4 1.3551 5.6 0.8 Cyg X-3
326.1002 38.3295 6.8 5.2 13.2 0.3677 1.7 3.4 Cyg X-2
289.8368 17.6065 2.4 39.8 77.4 3.9837 4.9 ------ UNKNOWN
305.4637 -1.2946 2.5 48.4 44.2 4.6334 4.7 ------ UNKNOWN
277.3748 39.3415 2.5 36.0 117.0 2.3583 4.6 ------ UNKNOWN
266.4949 67.8216 3.3 38.9 165.6 1.2259 3.5 ------ UNKNOWN
239.3510 75.4149 2.6 47.3 176.6 2.1832 4.4 ------ UNKNOWN
342.8811 13.7682 2.4 33.2 -14.9 1.2821 4.9 ------ UNKNOWN
119.2792 77.4122 3.6 57.9 -156.8 5.0296 3.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.016000 0.020000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.6803 35.3632 10.4 21.6 93.2 0.0061 1.1 10.6 Cyg X-1
308.1334 40.7979 123.4 13.3 100.7 -0.0004 -0.1 9.3 Cyg X-3
326.0682 38.1417 7.5 5.4 13.6 0.0053 1.5 11.9 Cyg X-2
293.7318 21.8823 1.1 34.2 77.7 0.1173 10.1 ------ UNKNOWN
348.7880 55.8988 2.4 19.2 -121.4 0.0152 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
62.140600 512.840590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4558 35.3423 197.7 36.7 151.3 0.0389 0.1 0.1 Her X-1
268.2336 -1.4208 5.9 34.1 81.1 -1.5509 -2.0 8.3 SW J1753.5-0127
274.1826 -14.0918 3.8 40.8 60.8 3.5860 3.0 10.8 GX 17+2
285.1936 -24.8925 6.9 47.5 41.5 -2.3289 -1.7 8.7 HT1900.1-2455
288.7559 10.9692 1.6 11.9 55.3 2.3159 7.2 2.9 GRS 1915+105
299.5944 35.2016 0.3 14.3 -129.2 15.1710 43.1 0.2 Cyg X-1
308.1146 40.9743 1.4 22.6 -119.8 3.2246 8.4 1.3 Cyg X-3
326.3938 38.2511 6.8 32.4 -96.7 1.1140 1.7 11.3 Cyg X-2
292.4756 33.2561 3.1 11.4 -154.3 1.3494 3.7 ------ UNKNOWN
328.7590 -25.4906 2.7 58.3 -6.5 8.2414 4.3 ------ UNKNOWN
261.5798 77.7489 3.7 57.9 -156.7 7.6568 3.2 ------ UNKNOWN
Plot creation:
Tue May 17 18:01:44 EDT 2016