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
84.0812 +34.4089 0.0449 39.7 -2.8 0.0685 4.3 TRIG_00778435
------------------------------------------
Foreground time interval of the image:
0.000 1.024 (delta_t = 1.024 [sec])
Background time interval of the image:
-239.320 -8.320 (delta_t = 231.000 [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 1.024000
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 1.024000
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 1.024000
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 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.09539 ( -0.5774 0.546831 )
Norm@50keV : 4.11754E-03 ( -0.00167472 0.00162123 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.83 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 57 degrees of freedom
# Null hypothesis probability = 8.930058e-02
Photon flux (15-150 keV) in 1.024 sec: 0.470795 ( -0.19438 0.197443 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.44147e-08 ( -1.74076e-08 1.7722e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.99999 ( 10 9.04205 )
Epeak [keV] : 38.5220 ( -4.44247 8.38968 )
Norm@50keV : 3.37257E+04 ( -33389.2 119288 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.31 using 59 PHA bins.
# Reduced chi-squared = 1.148 for 56 degrees of freedom
# Null hypothesis probability = 2.084010e-01
Photon flux (15-150 keV) in 1.024 sec: 0.461092 0.460164 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.71702e-16 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5.45901 -5 )
beta : -2.28023 ( -2.15989 0.938375 )
Epeak [keV] : 43.1564 ( -8.07236 10.5618 )
Norm@50keV : 21.0063 ( -7.773 54.933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.98 using 59 PHA bins.
# Reduced chi-squared = 1.145 for 55 degrees of freedom
# Null hypothesis probability = 2.147823e-01
Photon flux (15-150 keV) in 1.024 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] : 17.4514 (-5.2075 8.73684)
R^2/D10^2 : 4.14510E-02 (-0.041451 0.10159)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.93 using 59 PHA bins.
# Reduced chi-squared = 1.174 for 57 degrees of freedom
# Null hypothesis probability = 1.729428e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.613e-09 1.732e-09
25- 50 1.180e-08 7.368e-09
50-150 2.587e-08 1.608e-08
15-150 4.029e-08 2.620e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.354 (-108.43 -199.359)
Norm : 2.06106 (-0.833331 0.837119)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.13 using 59 PHA bins.
# Reduced chi-squared = 1.283 for 57 degrees of freedom
# Null hypothesis probability = 7.362217e-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] : 12.7811 (-13.324 -13.324)
R1^2/D10^2 : 3.95766E-02 (-0.0444042 -0.0444042)
kT2 [keV] : 20.2339 (-21.3903 -21.3903)
R2^2/D10^2 : 1.75242E-02 (-0.0116966 -0.0116966)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.93 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.87 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 55 degrees of freedom
# Reduced chi-squared = 1.216 for 55 degrees of freedom
# Null hypothesis probability = 1.298961e-01
# Null hypothesis probability = 1.309130e-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 0.000 sec. to 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.09539 ( -0.5774 0.546831 )
Norm@50keV : 4.11754E-03 ( -0.00167472 0.00162123 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.83 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 57 degrees of freedom
# Null hypothesis probability = 8.930058e-02
Photon flux (15-150 keV) in 1.024 sec: 0.470795 ( -0.19438 0.197443 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.44147e-08 ( -1.74076e-08 1.7722e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.99999 ( 10 9.04205 )
Epeak [keV] : 38.5220 ( -4.44247 8.38968 )
Norm@50keV : 3.37257E+04 ( -33389.2 119288 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.31 using 59 PHA bins.
# Reduced chi-squared = 1.148 for 56 degrees of freedom
# Null hypothesis probability = 2.084010e-01
Photon flux (15-150 keV) in 1.024 sec: 0.461092 0.460164 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.71702e-16 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5.45901 -5 )
beta : -2.28023 ( -2.1624 0.938377 )
Epeak [keV] : 43.1564 ( -8.07236 10.5618 )
Norm@50keV : 21.0063 ( -7.773 54.933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.98 using 59 PHA bins.
# Reduced chi-squared = 1.145 for 55 degrees of freedom
# Null hypothesis probability = 2.147823e-01
Photon flux (15-150 keV) in 1.024 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] : 17.4514 (-5.2075 8.73684)
R^2/D10^2 : 4.14510E-02 (-0.041451 0.10159)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.93 using 59 PHA bins.
# Reduced chi-squared = 1.174 for 57 degrees of freedom
# Null hypothesis probability = 1.729428e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.613e-09 1.706e-09
25- 50 1.180e-08 7.578e-09
50-150 2.587e-08 1.693e-08
15-150 4.029e-08 2.567e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.354 (-108.43 -199.359)
Norm : 2.06106 (-0.833331 0.837119)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.13 using 59 PHA bins.
# Reduced chi-squared = 1.283 for 57 degrees of freedom
# Null hypothesis probability = 7.362217e-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] : 12.7811 (-13.324 -13.324)
R1^2/D10^2 : 3.95766E-02 (-0.0444042 -0.0444042)
kT2 [keV] : 20.2339 (-21.3903 -21.3903)
R2^2/D10^2 : 1.75242E-02 (-0.0116966 -0.0116966)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.93 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.87 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 55 degrees of freedom
# Reduced chi-squared = 1.216 for 55 degrees of freedom
# Null hypothesis probability = 1.298961e-01
# Null hypothesis probability = 1.309130e-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
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: 1.09539 ( -0.5774 0.546831 )
Norm@50keV : 4.11754E-03 ( -0.00167472 0.00162123 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.83 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 57 degrees of freedom
# Null hypothesis probability = 8.930058e-02
Photon flux (15-150 keV) in 1.024 sec: 0.470795 ( -0.19438 0.197443 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.44147e-08 ( -1.74076e-08 1.7722e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.99999 ( 10 9.04205 )
Epeak [keV] : 38.5220 ( -4.44247 8.38968 )
Norm@50keV : 3.37257E+04 ( -33389.2 119288 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.31 using 59 PHA bins.
# Reduced chi-squared = 1.148 for 56 degrees of freedom
# Null hypothesis probability = 2.084010e-01
Photon flux (15-150 keV) in 1.024 sec: 0.461092 0.460164 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.71702e-16 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5.45901 -5 )
beta : -2.28023 ( -2.1616 0.938377 )
Epeak [keV] : 43.1564 ( -8.07236 10.5618 )
Norm@50keV : 21.0063 ( -7.773 54.933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.98 using 59 PHA bins.
# Reduced chi-squared = 1.145 for 55 degrees of freedom
# Null hypothesis probability = 2.147823e-01
Photon flux (15-150 keV) in 1.024 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) = 8.48e-09
S(50-100 keV) = 1.64e-08
T90 vs. Hardness ratio plot
T90 = 1.02399998903275 sec.
Hardness ratio (energy fluence ratio) = 1.93396
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = -3.75546
Count Ratio (50-100 keV) / (15-25 keV) = -2.38214
Mask shadow pattern
IMX = 8.292576672153816E-01, IMY = 4.064757840033607E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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:
-239.320000 -8.320000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6296 22.0036 0.7 48.4 10.0 8.3665 17.7 0.7 Crab
308.1715 40.9797 4.8 56.5 -162.9 3.2372 2.4 3.2 Cyg X-3
326.2364 38.4135 21.4 47.6 -176.8 0.2638 0.5 6.3 Cyg X-2
350.2700 17.3291 2.7 48.4 142.8 4.6586 4.3 ------ UNKNOWN
36.4577 41.9463 2.8 9.9 69.5 0.9290 4.1 ------ UNKNOWN
324.1955 26.7307 3.0 56.8 173.8 6.0788 3.8 ------ UNKNOWN
40.9188 61.4323 0.2 10.5 -79.1 11.2151 49.9 ------ UNKNOWN
112.6048 78.1996 3.3 37.6 -79.2 2.5787 3.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 1.024000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6847 22.0272 6.1 48.4 9.9 -0.0485 -1.9 3.0 Crab
308.0413 41.0827 7.0 56.5 -162.7 -0.0994 -1.6 8.4 Cyg X-3
326.0508 38.3706 6.6 47.8 -176.7 -0.0433 -1.7 6.4 Cyg X-2
68.7388 21.8965 2.6 40.2 26.0 0.0844 4.5 ------ UNKNOWN
94.1254 41.6196 2.4 41.4 -19.1 0.0772 4.9 ------ UNKNOWN
313.0248 44.8326 2.4 51.3 -162.1 0.1401 4.7 ------ UNKNOWN
113.9007 51.9853 2.4 46.9 -42.2 0.1407 4.8 ------ UNKNOWN
119.3489 56.3058 2.3 47.2 -49.5 0.2287 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
90.680600 228.090000
229.680000 698.380650
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6231 22.0119 0.2 12.5 9.6 25.0479 50.1 0.6 Crab
47.9939 11.2349 3.1 40.2 71.1 8.0861 3.8 ------ UNKNOWN
40.9226 61.4421 0.4 38.3 155.8 28.6680 29.1 ------ UNKNOWN
47.9578 76.4386 3.4 45.0 176.4 3.4264 3.4 ------ UNKNOWN
92.2913 -20.3408 2.5 55.4 -1.7 8.1273 4.6 ------ UNKNOWN
90.8996 2.4770 2.8 32.6 -5.1 2.5690 4.2 ------ UNKNOWN
113.3559 -15.8523 3.2 57.5 -26.2 13.0670 3.6 ------ UNKNOWN
148.3823 55.5718 3.4 48.0 -129.1 9.9241 3.4 ------ UNKNOWN
Plot creation:
Sat Oct 14 02:25:27 EDT 2017