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
12.4011 +40.6346 0.0554 10.7 -160.7 0.0893 3.5 TRIG_00758005
------------------------------------------
Foreground time interval of the image:
0.000 1.024 (delta_t = 1.024 [sec])
Background time interval of the image:
-107.755 -81.416 (delta_t = 26.339 [sec])
-79.856 -54.086 (delta_t = 25.770 [sec])
-52.856 -9.856 (delta_t = 43.000 [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
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
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.984634 ( -1.14643 1.17641 )
Norm@50keV : 1.77331E-03 ( -0.00176637 0.00232765 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.46 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.579557e-01
Photon flux (15-150 keV) in 1.024 sec: 0.390255 ( -0.390001 0.224068 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.45786e-08 ( -6.45788e-08 3.22576e-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: -0.983751 ( -1.60029 1.67071 )
Epeak [keV] : 9999.99 ( -9999.99 -9999.99 )
Norm@50keV : 1.86076E-03 ( -0.00186076 -0.00186076 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 56 degrees of freedom
# Null hypothesis probability = 4.221222e-01
Photon flux (15-150 keV) in 1.024 sec: 0.400458 ( -0.191171 0.207064 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.77762e-08 ( -3.51554e-08 3.68285e-08 ) 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 -5 )
beta : -0.429327 ( 0.42841 2.45464 )
Epeak [keV] : 150.002 ( -149.705 232.221 )
Norm@50keV : 1.52401E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.61 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 55 degrees of freedom
# Null hypothesis probability = 4.146085e-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] : 200.000 (-200 -200)
R^2/D10^2 : 2.32068E-04 (-0.000114066 -0.00023225)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.590749e-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
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 0.265234 (-7 -7)
Norm : 6.90112E+19 (-7.18528e+19 -7.18528e+19)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.35 using 59 PHA bins.
# Reduced chi-squared = 1.199 for 57 degrees of freedom
# Null hypothesis probability = 1.443638e-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
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 197.129 (-159.598 -197.13)
R1^2/D10^2 : 2.35150E-04 (-0.000118003 0.0039369)
kT2 [keV] : 10.0000 (-10 -10)
R2^2/D10^2 : 0.0 (0 1.87186)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.65 using 59 PHA bins.
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 55 degrees of freedom
# Reduced chi-squared = 1.044 for 55 degrees of freedom
# Null hypothesis probability = 1.021272e-01
# Null hypothesis probability = 3.851180e-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: -0.984634 ( -1.14643 1.17641 )
Norm@50keV : 1.77331E-03 ( -0.00176637 0.00232765 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.46 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.579557e-01
Photon flux (15-150 keV) in 1.024 sec: 0.390255 ( -0.390001 0.224068 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.45786e-08 ( -6.45788e-08 3.22576e-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: -0.983751 ( -1.60029 1.67071 )
Epeak [keV] : 9999.99 ( -9999.99 -9999.99 )
Norm@50keV : 1.86076E-03 ( -0.00186076 -0.00186076 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 56 degrees of freedom
# Null hypothesis probability = 4.221222e-01
Photon flux (15-150 keV) in 1.024 sec: 0.400458 ( -0.191171 0.207064 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.77762e-08 ( -3.51554e-08 3.68285e-08 ) 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 -5 )
beta : -0.429327 ( 0.42841 2.45464 )
Epeak [keV] : 150.002 ( -149.705 232.221 )
Norm@50keV : 1.52401E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.61 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 55 degrees of freedom
# Null hypothesis probability = 4.146085e-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] : 200.000 (-200 -200)
R^2/D10^2 : 2.32068E-04 (-0.000114066 -0.00023225)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.590749e-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
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 0.265234 (-7 -7)
Norm : 6.90112E+19 (-7.18528e+19 -7.18528e+19)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.35 using 59 PHA bins.
# Reduced chi-squared = 1.199 for 57 degrees of freedom
# Null hypothesis probability = 1.443638e-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
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 197.129 (-159.619 -197.13)
R1^2/D10^2 : 2.35150E-04 (-0.000118003 0.0039369)
kT2 [keV] : 10.0000 (-10 -10)
R2^2/D10^2 : 0.0 (0 1.87186)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.65 using 59 PHA bins.
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 55 degrees of freedom
# Reduced chi-squared = 1.044 for 55 degrees of freedom
# Null hypothesis probability = 1.021272e-01
# Null hypothesis probability = 3.851180e-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: -0.984634 ( -1.14643 1.17641 )
Norm@50keV : 1.77331E-03 ( -0.00176637 0.00232765 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.46 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.579557e-01
Photon flux (15-150 keV) in 1.024 sec: 0.390255 ( -0.390001 0.224068 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.45786e-08 ( -6.45788e-08 3.22576e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.983751 ( -1.60029 1.67071 )
Epeak [keV] : 9999.99 ( -9999.99 -9999.99 )
Norm@50keV : 1.86076E-03 ( -0.00186076 -0.00186076 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 56 degrees of freedom
# Null hypothesis probability = 4.221222e-01
Photon flux (15-150 keV) in 1.024 sec: 0.400458 ( -0.191171 0.207064 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.77762e-08 ( -3.51554e-08 3.68285e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -0.429327 ( 0.42841 2.45464 )
Epeak [keV] : 150.002 ( -149.705 232.221 )
Norm@50keV : 1.52401E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.61 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 55 degrees of freedom
# Null hypothesis probability = 4.146085e-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) = 2.11e-09
S(50-100 keV) = 1.68e-08
T90 vs. Hardness ratio plot
T90 = 1.02399998903275 sec.
Hardness ratio (energy fluence ratio) = 7.96209
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = -0.085931
Count Ratio (50-100 keV) / (15-25 keV) = -2.25598
Mask shadow pattern
IMX = -1.777576595786176E-01, IMY = 6.241534473821336E-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:
-107.755410 -81.416000
-79.856000 -54.086000
-52.856000 -9.856000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
326.1554 38.2889 5.4 38.1 130.9 3.2486 2.1 2.1 Cyg X-2
348.3611 -10.8615 3.0 46.5 48.0 8.2580 3.9 ------ UNKNOWN
0.2057 -14.7378 3.7 46.0 31.1 4.2328 3.1 ------ UNKNOWN
30.0510 -17.7076 3.5 50.9 -7.1 4.2866 3.3 ------ UNKNOWN
35.0071 -20.1333 2.3 55.0 -11.4 9.6087 5.0 ------ UNKNOWN
36.6787 -17.0929 2.8 52.9 -14.8 6.9818 4.1 ------ 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] [']
326.0920 38.1992 8.0 38.1 130.7 0.0959 1.4 8.3 Cyg X-2
324.1339 26.8763 2.1 41.5 113.6 0.5948 5.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
60.744600 126.374000
900.144000 916.924000
918.144000 941.824000
943.144000 944.944000
946.144000 953.474000
955.144000 958.684000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
326.1717 38.3217 2700.0 35.4 112.7 0.0000 0.0 0.0 Cyg X-2
Plot creation:
Thu Jun 22 20:42:58 EDT 2017