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
40.7875 +61.3659 0.0411 10.4 -93.5 1.5182 4.7 TRIG_00775946
------------------------------------------
Foreground time interval of the image:
0.000 140.220 (delta_t = 140.220 [sec])
141.000 328.000 (delta_t = 187.000 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 140.220000
141.000000 328.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.79867 ( -0.381052 0.463507 )
Norm@50keV : 1.84397E-04 ( -6.51157e-05 6.91404e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.91 using 59 PHA bins.
# Reduced chi-squared = 1.437 for 57 degrees of freedom
# Null hypothesis probability = 1.698526e-02
Photon flux (15-150 keV) in 327.2 sec: 4.39833E-02 ( -0.0076059 0.00764721 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.65567e-07 ( -1.50187e-07 1.6443e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 140.220000
141.000000 328.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.653413 ( -2.82026 1.41921 )
Epeak [keV] : 20.9046 ( )
Norm@50keV : 4.84229E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.08 using 59 PHA bins.
# Reduced chi-squared = 1.376 for 56 degrees of freedom
# Null hypothesis probability = 3.238037e-02
Photon flux (15-150 keV) in 327.2 sec: 4.36282E-02 ( -0.0073032 0.007318 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.14442e-07 ( -1.20943e-07 1.37211e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 140.220000
141.000000 328.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.473310 ( -1.57431 2.76905 )
beta : -10.0000 ( 10 3.55271e-15 )
Epeak [keV] : 21.7618 ( -13.0922 8.12279 )
Norm@50keV : 6.40120E-03 ( -0.00639602 0.383897 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.05 using 59 PHA bins.
# Reduced chi-squared = 1.401 for 55 degrees of freedom
# Null hypothesis probability = 2.649411e-02
Photon flux (15-150 keV) in 327.2 sec: 4.36025E-02 ( 6.9564 -0.0071526 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.18676e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.83710 (-1.14436 1.24385)
R^2/D10^2 : 9.74866E-02 (-0.0485948 0.110388)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.82 using 59 PHA bins.
# Reduced chi-squared = 1.383 for 57 degrees of freedom
# Null hypothesis probability = 2.941430e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.336e-07 7.174e-08
25- 50 3.055e-07 1.011e-07
50-150 4.646e-08 2.634e-08
15-150 5.856e-07 1.644e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 23.7449 (-7.12756 10.6979)
Norm : 0.453155 (-0.137808 0.226049)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.67 using 59 PHA bins.
# Reduced chi-squared = 1.363 for 57 degrees of freedom
# Null hypothesis probability = 3.573496e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.623e-07 6.078e-08
25- 50 2.600e-07 8.224e-08
50-150 1.024e-07 7.087e-08
15-150 6.247e-07 1.847e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.07207 (-1.8638 2.34888)
R1^2/D10^2 : 17.1877 (-46.6891 -46.9968)
kT2 [keV] : 7.96506 (-1.53157 2.14446)
R2^2/D10^2 : 4.51956E-02 (-0.0342448 0.0568073)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.40 using 59 PHA bins.
# Reduced chi-squared = 1.353 for 55 degrees of freedom
# Null hypothesis probability = 4.181882e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.393e-07 1.198e-07
25- 50 2.960e-07 1.698e-07
50-150 7.602e-08 5.476e-08
15-150 6.113e-07 3.205e-07
Peak spectrum fit
Power-law model
Time interval is from 141.000 sec. to 328.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.79867 ( -0.381052 0.463507 )
Norm@50keV : 1.84397E-04 ( -6.51157e-05 6.91404e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.91 using 59 PHA bins.
# Reduced chi-squared = 1.437 for 57 degrees of freedom
# Null hypothesis probability = 1.698526e-02
Photon flux (15-150 keV) in 327.2 sec: 4.39833E-02 ( -0.0076059 0.00764721 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.65567e-07 ( -1.50187e-07 1.6443e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 141.000 sec. to 328.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.653413 ( -2.82026 1.41921 )
Epeak [keV] : 20.9046 ( )
Norm@50keV : 4.84229E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.08 using 59 PHA bins.
# Reduced chi-squared = 1.376 for 56 degrees of freedom
# Null hypothesis probability = 3.238037e-02
Photon flux (15-150 keV) in 327.2 sec: 4.36282E-02 ( -0.0073032 0.007318 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.14442e-07 ( -1.20943e-07 1.37211e-07 ) ergs/cm2
Band function
Time interval is from 141.000 sec. to 328.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.473310 ( -1.57431 2.76905 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 21.7618 ( -12.98 8.12284 )
Norm@50keV : 6.40120E-03 ( -0.00639602 0.383897 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.05 using 59 PHA bins.
# Reduced chi-squared = 1.401 for 55 degrees of freedom
# Null hypothesis probability = 2.649411e-02
Photon flux (15-150 keV) in 327.2 sec: 4.36025E-02 ( 6.9564 -0.0071526 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.18676e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.83710 (-1.14436 1.24385)
R^2/D10^2 : 9.74866E-02 (-0.0485948 0.110388)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.82 using 59 PHA bins.
# Reduced chi-squared = 1.383 for 57 degrees of freedom
# Null hypothesis probability = 2.941430e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.336e-07 6.222e-08
25- 50 3.055e-07 9.914e-08
50-150 4.646e-08 2.793e-08
15-150 5.856e-07 1.590e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 23.7449 (-7.12756 10.6979)
Norm : 0.453155 (-0.137808 0.226049)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.67 using 59 PHA bins.
# Reduced chi-squared = 1.363 for 57 degrees of freedom
# Null hypothesis probability = 3.573496e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.623e-07 5.955e-08
25- 50 2.600e-07 8.223e-08
50-150 1.024e-07 6.846e-08
15-150 6.247e-07 1.868e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.07207 (-1.80686 2.43248)
R1^2/D10^2 : 17.1877 (-46.6891 -46.9968)
kT2 [keV] : 7.96506 (-1.53157 2.14446)
R2^2/D10^2 : 4.51956E-02 (-0.0342448 0.0568053)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.40 using 59 PHA bins.
# Reduced chi-squared = 1.353 for 55 degrees of freedom
# Null hypothesis probability = 4.181882e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.393e-07 1.180e-07
25- 50 2.960e-07 1.706e-07
50-150 7.602e-08 5.232e-08
15-150 6.113e-07 3.292e-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: 2.79867 ( -0.381052 0.463507 )
Norm@50keV : 1.84397E-04 ( -6.51157e-05 6.91404e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.91 using 59 PHA bins.
# Reduced chi-squared = 1.437 for 57 degrees of freedom
# Null hypothesis probability = 1.698526e-02
Photon flux (15-150 keV) in 327.2 sec: 4.39833E-02 ( -0.0076059 0.00764721 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.65567e-07 ( -1.50187e-07 1.6443e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.653413 ( -2.82026 1.41921 )
Epeak [keV] : 20.9046 ( )
Norm@50keV : 4.84229E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.08 using 59 PHA bins.
# Reduced chi-squared = 1.376 for 56 degrees of freedom
# Null hypothesis probability = 3.238037e-02
Photon flux (15-150 keV) in 327.2 sec: 4.36282E-02 ( -0.0073032 0.007318 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.14442e-07 ( -1.20943e-07 1.37211e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.473310 ( -1.57431 2.76905 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 21.7618 ( -12.9801 8.12284 )
Norm@50keV : 6.40120E-03 ( -0.00639602 0.383897 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.05 using 59 PHA bins.
# Reduced chi-squared = 1.401 for 55 degrees of freedom
# Null hypothesis probability = 2.649411e-02
Photon flux (15-150 keV) in 327.2 sec: 4.36025E-02 ( 6.9564 -0.0071526 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.18676e-07 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 2.24e-07
S(50-100 keV) = 1.29e-07
T90 vs. Hardness ratio plot
T90 = 328 sec.
Hardness ratio (energy fluence ratio) = 0.575893
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.788813
Count Ratio (50-100 keV) / (15-25 keV) = -0.0939009
Mask shadow pattern
IMX = -1.130372508988047E-02, IMY = 1.835873091741558E-01
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 140.220000
141.000000 328.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6185 22.0027 0.6 48.5 -4.6 12.4167 20.8 1.1 Crab
307.9674 40.9556 2700.0 56.6 -177.3 0.0053 0.0 6.5 Cyg X-3
326.3035 38.3727 4.5 47.6 168.6 -2.1339 -2.5 6.9 Cyg X-2
334.1919 26.2737 3.0 50.9 150.9 7.2585 3.8 ------ UNKNOWN
325.7428 42.0796 2.6 45.6 173.0 3.0799 4.3 ------ UNKNOWN
303.8402 48.6009 3.1 53.8 -167.9 4.0551 3.7 ------ UNKNOWN
344.0118 79.6916 2.8 32.4 -127.6 1.6003 4.1 ------ UNKNOWN
84.5173 67.3585 3.6 29.0 -74.8 1.2876 3.2 ------ UNKNOWN
285.5326 56.4606 3.0 56.8 -151.8 7.5238 3.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
377.300610 963.087500
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6446 22.0164 0.4 49.1 -2.5 23.3183 27.0 0.6 Crab
326.3883 38.2548 630.6 49.9 152.4 -0.0532 -0.0 11.0 Cyg X-2
317.2170 60.2452 2.7 38.0 -179.3 2.7943 4.3 ------ UNKNOWN
313.5124 65.8302 2.4 35.9 -170.3 2.7620 4.9 ------ UNKNOWN
263.2761 57.3564 3.1 56.7 -151.8 10.3808 3.8 ------ UNKNOWN
Plot creation:
Wed Oct 4 01:29:44 EDT 2017