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
172.2830 -60.1471 0.0000 14.4 -42.9 -0.3043 -0.6 TRIG_00735413
------------------------------------------
Foreground time interval of the image:
0.000 19.930 (delta_t = 19.930 [sec])
21.000 198.030 (delta_t = 177.030 [sec])
199.000 252.020 (delta_t = 53.020 [sec])
253.000 264.670 (delta_t = 11.670 [sec])
266.000 267.610 (delta_t = 1.610 [sec])
269.000 429.820 (delta_t = 160.820 [sec])
431.000 695.990 (delta_t = 264.990 [sec])
697.000 712.760 (delta_t = 15.760 [sec])
714.000 766.540 (delta_t = 52.540 [sec])
768.000 792.000 (delta_t = 24.000 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 792.000000
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 792.000000
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 792.000000
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 19.930000
21.000000 198.030000
199.000000 252.020000
253.000000 264.670000
266.000000 267.610000
269.000000 429.820000
431.000000 695.990000
697.000000 712.760000
714.000000 766.540000
768.000000 792.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 9.83172 ( -9.83172 -9.83172 )
Norm@50keV : 3.95060E-09 ( -3.9506e-09 -3.9506e-09 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.32 using 59 PHA bins.
# Reduced chi-squared = 1.041 for 57 degrees of freedom
# Null hypothesis probability = 3.911226e-01
Photon flux (15-150 keV) in 781.4 sec: 1.10687E-03 9.69021E-04 8.84191E-04 ( -0.00110687 0.0033731 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.05829e-21 ( -1.50049e-07 3.19592e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 19.930000
21.000000 198.030000
199.000000 252.020000
253.000000 264.670000
266.000000 267.610000
269.000000 429.820000
431.000000 695.990000
697.000000 712.760000
714.000000 766.540000
768.000000 792.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 3.73485E-06 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.66 using 59 PHA bins.
# Reduced chi-squared = 1.083 for 56 degrees of freedom
# Null hypothesis probability = 3.116008e-01
Photon flux (15-150 keV) in 781.4 sec: 4.65150E-04 3.98936E-04 1.45683E-04 7.94605E-06 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.47112e-23 ( 0 0 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 19.930000
21.000000 198.030000
199.000000 252.020000
253.000000 264.670000
266.000000 267.610000
269.000000 429.820000
431.000000 695.990000
697.000000 712.760000
714.000000 766.540000
768.000000 792.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.00554 ( 1.07753 1.07753 )
beta : -9.08523 ( )
Epeak [keV] : 8.09464 ( )
Norm@50keV : 1.33782E-06 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.36 using 59 PHA bins.
# Reduced chi-squared = 1.079 for 55 degrees of freedom
# Null hypothesis probability = 3.198673e-01
Photon flux (15-150 keV) in 781.4 sec: 0.0 ( ) 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] : 0.410098 (-1.67519 -1.67519)
R^2/D10^2 : 5.19295E+11 (-5.31747e+11 -5.31747e+11)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.11 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 57 degrees of freedom
# Null hypothesis probability = 3.985208e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.593e-08 8.826e-09
25- 50 2.969e-10 8.228e-11
50-150 9.289e-16 1.062e-16
15-150 2.623e-08 8.228e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 0.356198 (-0.35612 -0.35612)
Norm : 7.41544E+13 (-7.51453e+13 -7.51453e+13)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.10 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 57 degrees of freedom
# Null hypothesis probability = 3.987846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.388e-08 1.200e-08
25- 50 2.846e-10 1.003e-10
50-150 5.322e-15 3.489e-16
15-150 2.416e-08 6.841e-09
Double BB
# Reduced chi-squared = 1.077 for 55 degrees of freedom
# Reduced chi-squared = 1.077 for 55 degrees of freedom
# Reduced chi-squared = 1.076 for 55 degrees of freedom
# Reduced chi-squared = 1.067 for 55 degrees of freedom
# Null hypothesis probability = 3.127654e-01
# Null hypothesis probability = 3.169194e-01
# Null hypothesis probability = 3.177744e-01
# Null hypothesis probability = 3.184415e-01
# Null hypothesis probability = 3.212381e-01
# Null hypothesis probability = 3.230135e-01
# Null hypothesis probability = 3.240836e-01
# Null hypothesis probability = 3.248105e-01
# Null hypothesis probability = 3.425478e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.033e-08 6.079e-02
25- 50 8.096e-10 0.000e+00
50-150 2.113e-14 6.345e-07
15-150 3.114e-08 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 768.000 sec. to 792.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 9.83172 ( -9.83172 -9.83172 )
Norm@50keV : 3.95060E-09 ( -3.9506e-09 -3.9506e-09 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.32 using 59 PHA bins.
# Reduced chi-squared = 1.041 for 57 degrees of freedom
# Null hypothesis probability = 3.911226e-01
Photon flux (15-150 keV) in 781.4 sec: 1.10687E-03 9.69021E-04 8.84191E-04 ( -0.00110687 0.0033731 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.05829e-21 ( -1.50049e-07 3.19592e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 768.000 sec. to 792.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 3.73485E-06 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.66 using 59 PHA bins.
# Reduced chi-squared = 1.083 for 56 degrees of freedom
# Null hypothesis probability = 3.116008e-01
Photon flux (15-150 keV) in 781.4 sec: 4.65150E-04 3.98936E-04 1.45683E-04 7.94605E-06 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.47112e-23 ( 0 0 ) ergs/cm2
Band function
Time interval is from 768.000 sec. to 792.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.00554 ( 1.07753 1.07753 )
beta : -9.08523 ( )
Epeak [keV] : 8.09464 ( )
Norm@50keV : 1.33782E-06 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.36 using 59 PHA bins.
# Reduced chi-squared = 1.079 for 55 degrees of freedom
# Null hypothesis probability = 3.198673e-01
Photon flux (15-150 keV) in 781.4 sec: 0.0 ( ) 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] : 0.410098 (-1.67519 -1.67519)
R^2/D10^2 : 5.19295E+11 (-5.31747e+11 -5.31747e+11)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.11 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 57 degrees of freedom
# Null hypothesis probability = 3.985208e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.593e-08 1.357e-08
25- 50 2.969e-10 9.342e-11
50-150 9.289e-16 1.337e-16
15-150 2.623e-08 1.032e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 0.356198 (-0.35612 -0.35612)
Norm : 7.41544E+13 (-7.51453e+13 -7.51453e+13)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.10 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 57 degrees of freedom
# Null hypothesis probability = 3.987846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.388e-08 5.837e-09
25- 50 2.846e-10 7.044e-11
50-150 5.322e-15 9.846e-17
15-150 2.416e-08 6.954e-09
Double BB
# Reduced chi-squared = 1.077 for 55 degrees of freedom
# Reduced chi-squared = 1.077 for 55 degrees of freedom
# Reduced chi-squared = 1.076 for 55 degrees of freedom
# Reduced chi-squared = 1.067 for 55 degrees of freedom
# Null hypothesis probability = 3.127654e-01
# Null hypothesis probability = 3.169194e-01
# Null hypothesis probability = 3.177744e-01
# Null hypothesis probability = 3.184415e-01
# Null hypothesis probability = 3.212381e-01
# Null hypothesis probability = 3.230135e-01
# Null hypothesis probability = 3.240836e-01
# Null hypothesis probability = 3.248105e-01
# Null hypothesis probability = 3.425478e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.033e-08 1.632e-02
25- 50 8.096e-10 5.063e-06
50-150 2.113e-14 0.000e+00
15-150 3.114e-08 4.165e-23
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: 9.83172 ( -9.83172 -9.83172 )
Norm@50keV : 3.95060E-09 ( -3.9506e-09 -3.9506e-09 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.32 using 59 PHA bins.
# Reduced chi-squared = 1.041 for 57 degrees of freedom
# Null hypothesis probability = 3.911226e-01
Photon flux (15-150 keV) in 781.4 sec: 1.10687E-03 9.69021E-04 8.84191E-04 ( -0.00110687 0.0033731 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.05829e-21 ( -1.50049e-07 3.19592e-07 ) 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 : 3.73485E-06 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.66 using 59 PHA bins.
# Reduced chi-squared = 1.083 for 56 degrees of freedom
# Null hypothesis probability = 3.116008e-01
Photon flux (15-150 keV) in 781.4 sec: 4.65150E-04 3.98936E-04 1.45683E-04 7.94605E-06 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.47112e-23 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.00554 ( 1.07753 1.07753 )
beta : -9.08523 ( )
Epeak [keV] : 8.09464 ( )
Norm@50keV : 1.33782E-06 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.36 using 59 PHA bins.
# Reduced chi-squared = 1.079 for 55 degrees of freedom
# Null hypothesis probability = 3.198673e-01
Photon flux (15-150 keV) in 781.4 sec: 0.0 ( ) 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) = 2.69e-094.76e-103.20e-10
S(50-100 keV) = 3.23e-084.44e-121.23e-12
T90 vs. Hardness ratio plot
T90 = 792 sec.
Hardness ratio (energy fluence ratio) = 1.20074e+10
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = -1.20587
Count Ratio (50-100 keV) / (15-25 keV) = 0.551044
Mask shadow pattern
IMX = 1.875131754254488E-01, IMY = 1.744256458689568E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 792.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 792.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 792.000000
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 19.930000
21.000000 198.030000
199.000000 252.020000
253.000000 264.670000
266.000000 267.610000
269.000000 429.820000
431.000000 695.990000
697.000000 712.760000
714.000000 766.540000
768.000000 792.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5820 -40.3924 11.6 28.5 39.8 0.6103 1.0 10.0 Vela X-1
170.3932 -60.5821 1.9 14.9 -39.5 2.9809 6.2 3.4 Cen X-3
186.7321 -62.7953 1.9 18.4 -65.2 3.3025 6.1 2.6 GX 301-2
135.8359 -28.5321 3.8 34.8 59.2 2.7553 3.0 ------ UNKNOWN
205.6409 -5.0946 2.4 48.9 176.2 6.0376 4.7 ------ UNKNOWN
222.9449 -31.9882 2.5 39.6 -140.1 3.9377 4.6 ------ UNKNOWN
236.4079 -33.6137 3.6 48.0 -128.9 7.9830 3.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Sun Jan 29 11:25:41 EST 2017