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
299.5939 +35.1961 0.0040 9.1 -18.5 13.1862 48.1 TRIG_00809374
------------------------------------------
Foreground time interval of the image:
0.000 352.000 (delta_t = 352.000 [sec])
Background time interval of the image:
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 352.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98047 ( -0.116258 0.119264 )
Norm@50keV : 9.33876E-04 ( -6.65366e-05 6.56075e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.59 using 59 PHA bins.
# Reduced chi-squared = 1.116 for 57 degrees of freedom
# Null hypothesis probability = 2.556404e-01
Photon flux (15-150 keV) in 352 sec: 0.138838 ( -0.00822942 0.0082449 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.02859e-06 ( -2.04408e-07 2.06723e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 352.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.87192 ( -0.461113 0.327955 )
Epeak [keV] : 51.6782 ( -49.5403 -51.6782 )
Norm@50keV : 1.07277E-03 ( -0.000366145 0.000838864 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.40 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 56 degrees of freedom
# Null hypothesis probability = 2.316809e-01
Photon flux (15-150 keV) in 352 sec: 0.137946 ( -0.008877 0.008791 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.99314e-06 ( -2.47586e-07 1.23805e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 352.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.418047 ( 1.03022 1.03022 )
beta : -2.04398 ( 2.03431 0.146609 )
Epeak [keV] : 24.5457 ( -26.6731 60.6995 )
Norm@50keV : 6.04437E-02 ( -0.05982 150.072 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.43 using 59 PHA bins.
# Reduced chi-squared = 1.135 for 55 degrees of freedom
# Null hypothesis probability = 2.291205e-01
Photon flux (15-150 keV) in 352 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.0447e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.3796 ( )
R^2/D10^2 : 5.31127E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 140.07 using 59 PHA bins.
# Reduced chi-squared = 2.4574 for 57 degrees of freedom
# Null hypothesis probability = 6.048058e-09
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.150e-07 4.435e-08
25- 50 1.087e-06 7.568e-08
50-150 6.311e-07 1.093e-07
15-150 2.133e-06 1.624e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 72.9323 (-13.4869 18.6651)
Norm : 0.659926 (-0.064688 0.0745136)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.32 using 59 PHA bins.
# Reduced chi-squared = 1.181 for 57 degrees of freedom
# Null hypothesis probability = 1.647432e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.984e-07 5.280e-08
25- 50 9.625e-07 5.579e-08
50-150 1.274e-06 1.837e-07
15-150 2.835e-06 2.288e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.40860 (-0.807796 0.913528)
R1^2/D10^2 : 0.483639 (-0.217401 0.450777)
kT2 [keV] : 20.0683 (-3.22152 4.78553)
R2^2/D10^2 : 3.30191E-03 (-0.00183894 0.00329132)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.29 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 55 degrees of freedom
# Null hypothesis probability = 2.329846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.513e-07 1.334e-07
25- 50 8.926e-07 1.427e-07
50-150 1.370e-06 3.582e-07
15-150 2.914e-06 6.274e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 352.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98047 ( -0.116258 0.119264 )
Norm@50keV : 9.33876E-04 ( -6.65366e-05 6.56075e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.59 using 59 PHA bins.
# Reduced chi-squared = 1.116 for 57 degrees of freedom
# Null hypothesis probability = 2.556404e-01
Photon flux (15-150 keV) in 352 sec: 0.138838 ( -0.00822942 0.0082449 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.02859e-06 ( -2.04408e-07 2.06723e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 352.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.87192 ( -0.461113 0.327955 )
Epeak [keV] : 51.6782 ( -49.54 -51.6782 )
Norm@50keV : 1.07277E-03 ( -0.000366145 0.000838864 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.40 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 56 degrees of freedom
# Null hypothesis probability = 2.316809e-01
Photon flux (15-150 keV) in 352 sec: 0.137946 ( -0.008877 0.008791 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.99314e-06 ( -2.47586e-07 1.23805e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 352.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.418047 ( 1.03022 1.03022 )
beta : -2.04398 ( 2.03431 0.146609 )
Epeak [keV] : 24.5457 ( -26.6731 60.6995 )
Norm@50keV : 6.04437E-02 ( -0.05982 150.08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.43 using 59 PHA bins.
# Reduced chi-squared = 1.135 for 55 degrees of freedom
# Null hypothesis probability = 2.291205e-01
Photon flux (15-150 keV) in 352 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.0447e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.3796 ( )
R^2/D10^2 : 5.31127E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 140.07 using 59 PHA bins.
# Reduced chi-squared = 2.4574 for 57 degrees of freedom
# Null hypothesis probability = 6.048058e-09
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.150e-07 4.523e-08
25- 50 1.087e-06 7.146e-08
50-150 6.311e-07 1.045e-07
15-150 2.133e-06 1.478e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 72.9323 (-13.4869 18.6651)
Norm : 0.659926 (-0.064688 0.0745136)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.32 using 59 PHA bins.
# Reduced chi-squared = 1.181 for 57 degrees of freedom
# Null hypothesis probability = 1.647432e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.984e-07 5.174e-08
25- 50 9.625e-07 6.266e-08
50-150 1.274e-06 1.950e-07
15-150 2.835e-06 2.258e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.40860 (-0.807796 0.913528)
R1^2/D10^2 : 0.483639 (-0.217401 0.450777)
kT2 [keV] : 20.0683 (-3.22152 4.78553)
R2^2/D10^2 : 3.30191E-03 (-0.00183894 0.00329132)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.29 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 55 degrees of freedom
# Null hypothesis probability = 2.329846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.513e-07 1.331e-07
25- 50 8.926e-07 1.514e-07
50-150 1.370e-06 4.161e-07
15-150 2.914e-06 5.537e-07
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: 1.98047 ( -0.116258 0.119264 )
Norm@50keV : 9.33876E-04 ( -6.65366e-05 6.56075e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.59 using 59 PHA bins.
# Reduced chi-squared = 1.116 for 57 degrees of freedom
# Null hypothesis probability = 2.556404e-01
Photon flux (15-150 keV) in 352 sec: 0.138838 ( -0.00822942 0.0082449 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.02859e-06 ( -2.04408e-07 2.06723e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.87192 ( -0.461113 0.327955 )
Epeak [keV] : 51.6782 ( -49.5403 -51.6782 )
Norm@50keV : 1.07277E-03 ( -0.000366145 0.000838864 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.40 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 56 degrees of freedom
# Null hypothesis probability = 2.316809e-01
Photon flux (15-150 keV) in 352 sec: 0.137946 ( -0.008877 0.008791 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.99314e-06 ( -2.47586e-07 1.23805e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.418047 ( 1.03022 1.03022 )
beta : -2.04398 ( 2.03431 0.146609 )
Epeak [keV] : 24.5457 ( -26.6731 60.6995 )
Norm@50keV : 6.04437E-02 ( -0.05982 150.079 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.43 using 59 PHA bins.
# Reduced chi-squared = 1.135 for 55 degrees of freedom
# Null hypothesis probability = 2.291205e-01
Photon flux (15-150 keV) in 352 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.0447e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 9.06e-07
S(50-100 keV) = 9.19e-07
T90 vs. Hardness ratio plot
T90 = 352 sec.
Hardness ratio (energy fluence ratio) = 1.01435
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.99933
Count Ratio (50-100 keV) / (15-25 keV) = 0.542417
Mask shadow pattern
IMX = 1.523512643545167E-01, IMY = 5.101184580057200E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 352.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3624 35.3784 5.4 41.8 32.2 -1.2290 -2.1 5.1 Her X-1
268.3716 -1.4389 43.5 56.0 -17.3 0.3113 0.3 0.9 SW J1753.5-0127
288.7973 10.9230 1.4 34.9 -33.2 3.2559 8.1 1.4 GRS 1915+105
299.5916 35.1995 0.2 9.1 -18.5 13.1913 48.0 0.1 Cyg X-1
307.9862 40.9916 2.2 0.5 -63.5 1.4994 5.3 6.1 Cyg X-3
326.0975 38.3481 4.3 14.2 -150.8 0.8204 2.7 3.8 Cyg X-2
255.2119 74.3919 3.1 40.5 93.1 4.9089 3.7 ------ UNKNOWN
23.2900 39.7166 3.2 55.3 177.2 5.4292 3.6 ------ UNKNOWN
24.1960 37.4857 3.3 57.0 179.2 7.1059 3.6 ------ UNKNOWN
292.6551 4.5292 2.7 39.4 -43.0 2.2885 4.2 ------ UNKNOWN
327.8110 4.4244 6.2 41.1 -98.5 2.4860 1.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
398.200590 545.400000
546.000000 963.061500
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4646 35.3848 134.3 36.7 43.0 0.0685 0.1 2.6 Her X-1
268.5049 -1.4532 3.9 46.7 -15.7 2.4308 2.9 8.2 SW J1753.5-0127
273.8639 -14.0194 44.2 54.9 -29.9 0.5300 0.3 8.3 GX 17+2
288.7912 10.9587 0.9 26.1 -35.9 6.2617 12.2 0.9 GRS 1915+105
299.5801 35.2068 0.2 0.2 81.1 20.7721 50.5 0.6 Cyg X-1
308.1329 40.9341 4.4 8.9 164.7 1.1673 2.6 1.5 Cyg X-3
326.2587 38.3829 3.5 21.4 -167.9 1.5664 3.3 5.5 Cyg X-2
288.3763 8.7089 2.1 28.3 -36.8 2.9407 5.5 ------ UNKNOWN
283.3256 -10.7845 2.9 48.4 -39.3 5.4687 4.0 ------ UNKNOWN
343.9386 9.0856 3.2 47.9 -129.1 7.2350 3.6 ------ UNKNOWN
Plot creation:
Sun Feb 11 11:03:41 EST 2018