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
176.4154 -6.8577 0.0485 6.3 173.6 0.3937 4.0 TRIG_00723124
------------------------------------------
Foreground time interval of the image:
1.000 65.000 (delta_t = 64.000 [sec])
Background time interval of the image:
-239.000 -204.240 (delta_t = 34.760 [sec])
-203.000 1.000 (delta_t = 204.000 [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 64.000000
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 64.000000
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 64.000000
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
Time interval is from 1.000 sec. to 65.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.27322 ( -0.450545 0.539709 )
Norm@50keV : 3.63331E-04 ( -0.000144608 0.000147629 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.69 using 59 PHA bins.
# Reduced chi-squared = 0.8191 for 57 degrees of freedom
# Null hypothesis probability = 8.333261e-01
Photon flux (15-150 keV) in 64 sec: 6.25507E-02 ( -0.0161312 0.0162308 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.20947e-07 ( -7.19514e-08 8.01293e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.000 sec. to 65.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.964445 ( -5.61596 2.62628 )
Epeak [keV] : 29.3947 ( -13.4507 9.00875 )
Norm@50keV : 5.51812E-02 ( -0.0643497 614.835 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.01 using 59 PHA bins.
# Reduced chi-squared = 0.7502 for 56 degrees of freedom
# Null hypothesis probability = 9.172697e-01
Photon flux (15-150 keV) in 64 sec: 6.11835E-02 ( -0.0150245 0.0152026 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.78518e-07 ( -5.08672e-08 6.31104e-08 ) ergs/cm2
Band function
Time interval is from 1.000 sec. to 65.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.964946 ( -1.82517 -0.0325502 )
beta : -10.0000 ( 10 1.06581e-14 )
Epeak [keV] : 29.5921 ( -6.83012 8.86428 )
Norm@50keV : 5.43619E-02 ( -0.0949102 24.4766 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.01 using 59 PHA bins.
# Reduced chi-squared = 0.7639 for 55 degrees of freedom
# Null hypothesis probability = 9.009107e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.82574e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.57439 (-1.61229 1.98987)
R^2/D10^2 : 9.46370E-02 (-0.0575788 0.149108)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.01 using 59 PHA bins.
# Reduced chi-squared = 0.7371 for 57 degrees of freedom
# Null hypothesis probability = 9.313186e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.015e-08 3.346e-08
25- 50 9.553e-08 4.763e-08
50-150 2.088e-08 1.479e-08
15-150 1.766e-07 9.968e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 35.5836 (-15.1199 35.1129)
Norm : 0.452616 (-0.163357 0.276804)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.09 using 59 PHA bins.
# Reduced chi-squared = 0.7735 for 57 degrees of freedom
# Null hypothesis probability = 8.944909e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.371e-08 2.638e-08
25- 50 7.948e-08 3.930e-08
50-150 5.383e-08 3.965e-08
15-150 1.970e-07 9.091e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.64228 (-5.65123 -5.65123)
R1^2/D10^2 : 8.56484E-02 (-0.0856374 -0.0856374)
kT2 [keV] : 8.39833 (-8.40126 -8.40126)
R2^2/D10^2 : 4.71710E-02 (-0.0470113 -0.0470113)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.98 using 59 PHA bins.
# Reduced chi-squared = 0.7632 for 55 degrees of freedom
# Null hypothesis probability = 9.016648e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.094e-08 5.699e-06
25- 50 9.407e-08 4.253e-05
50-150 2.456e-08 3.834e-04
15-150 1.796e-07 5.610e-04
Peak spectrum fit
Power-law model
Time interval is from 8.500 sec. to 9.500 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.47323 ( -3.48109 -3.48109 )
Norm@50keV : 1.37552E-04 ( -0.000137071 0.00117892 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.06 using 59 PHA bins.
# Reduced chi-squared = 1.141 for 57 degrees of freedom
# Null hypothesis probability = 2.166022e-01
Photon flux (15-150 keV) in 1 sec: 5.44739E-02 ( -0.0543541 0.124405 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.12844e-09 ( -2.12393e-09 1.16918e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 8.500 sec. to 9.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.04054E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.42 using 59 PHA bins.
# Reduced chi-squared = 1.168 for 56 degrees of freedom
# Null hypothesis probability = 1.823297e-01
Photon flux (15-150 keV) in 1 sec: 5.93620E-02 ( -0.059362 0.104804 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.95825e-09 ( -1.95825e-09 1.05336e-08 ) ergs/cm2
Band function
Time interval is from 8.500 sec. to 9.500 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.82951 ( 9.82951 9.82951 )
beta : -3.47868 ( 3.47841 3.47841 )
Epeak [keV] : 31.8233 ( -31.8233 -31.8233 )
Norm@50keV : 1.85988E-02 ( -0.0186037 0.160274 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.06 using 59 PHA bins.
# Reduced chi-squared = 1.183 for 55 degrees of freedom
# Null hypothesis probability = 1.662976e-01
Photon flux (15-150 keV) in 1 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] : 4.17942 (-4.22616 -4.22616)
R^2/D10^2 : 1.17095 (-1.20797 -1.20797)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.93 using 59 PHA bins.
# Reduced chi-squared = 1.139 for 57 degrees of freedom
# Null hypothesis probability = 2.198578e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.312e-09 8.620e-10
25- 50 5.359e-10 5.785e-10
50-150 8.441e-12 1.444e-11
15-150 1.856e-09 1.727e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.6260 (-10.5469 -10.5469)
Norm : 1.70973 (-1.71218 -1.71218)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.00 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 57 degrees of freedom
# Null hypothesis probability = 2.181702e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.275e-09 8.120e-10
25- 50 5.944e-10 5.720e-10
50-150 4.791e-11 4.497e-11
15-150 1.917e-09 1.456e-09
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.16558 (-4.44213 -4.44213)
R1^2/D10^2 : 1.23836 (-0.933136 -0.933136)
kT2 [keV] : 197.693 (-197.985 -197.985)
R2^2/D10^2 : 6.37226E-06 (-6.32544e-06 -6.32544e-06)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.93 using 59 PHA bins.
#Fit statistic : Chi-Squared = 64.88 using 59 PHA bins.
# Reduced chi-squared = 1.181 for 55 degrees of freedom
# Reduced chi-squared = 1.180 for 55 degrees of freedom
# Null hypothesis probability = 1.690830e-01
# Null hypothesis probability = 1.701454e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.303e-09 1.645e-09
25- 50 6.474e-10 2.935e-10
50-150 1.538e-11 5.595e-12
15-150 1.966e-09 1.416e-09
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: 2.27322 ( -0.450545 0.539709 )
Norm@50keV : 3.63331E-04 ( -0.000144608 0.000147629 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.69 using 59 PHA bins.
# Reduced chi-squared = 0.8191 for 57 degrees of freedom
# Null hypothesis probability = 8.333261e-01
Photon flux (15-150 keV) in 64 sec: 6.25507E-02 ( -0.0161312 0.0162308 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.20947e-07 ( -7.19514e-08 8.01293e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.964445 ( -5.61596 2.62628 )
Epeak [keV] : 29.3947 ( -13.4507 9.00875 )
Norm@50keV : 5.51812E-02 ( -0.0643497 614.835 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.01 using 59 PHA bins.
# Reduced chi-squared = 0.7502 for 56 degrees of freedom
# Null hypothesis probability = 9.172697e-01
Photon flux (15-150 keV) in 64 sec: 6.11835E-02 ( -0.0150245 0.0152026 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.78518e-07 ( -5.08672e-08 6.31104e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.964946 ( -1.82517 -0.0325502 )
beta : -10.0000 ( 10 3.55271e-15 )
Epeak [keV] : 29.5921 ( -6.83012 8.86428 )
Norm@50keV : 5.43619E-02 ( -0.0949102 24.4766 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.01 using 59 PHA bins.
# Reduced chi-squared = 0.7639 for 55 degrees of freedom
# Null hypothesis probability = 9.009107e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.82574e-07 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 7.10e-08
S(50-100 keV) = 5.87e-08
T90 vs. Hardness ratio plot
T90 = 48 sec.
Hardness ratio (energy fluence ratio) = 0.826761
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.926024
Count Ratio (50-100 keV) / (15-25 keV) = 0.072771
Mask shadow pattern
IMX = -1.098981266160073E-01, IMY = -1.225833552652300E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
-239.000000 -204.240000
-203.000000 1.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.4376 -40.5299 3.2 44.5 30.4 1.7658 3.6 4.4 Vela X-1
170.5803 -60.5465 16.7 47.6 -10.7 0.2692 0.7 9.0 Cen X-3
186.4301 -62.7540 7.4 50.2 -20.4 0.8347 1.5 6.3 GX 301-2
133.4351 -12.8424 2.3 41.0 71.4 4.4978 4.9 ------ UNKNOWN
170.8865 33.9511 2.6 47.3 160.7 2.7129 4.4 ------ UNKNOWN
143.1123 -43.5008 2.8 41.2 22.2 1.4968 4.0 ------ UNKNOWN
167.7155 -47.6075 2.1 35.1 -4.8 1.5681 5.4 ------ UNKNOWN
176.6257 -69.0485 3.3 55.9 -14.4 2.9583 3.5 ------ UNKNOWN
187.6676 -55.3117 2.8 43.2 -24.0 1.5315 4.2 ------ UNKNOWN
179.6990 -72.5031 2.6 59.4 -15.4 6.5983 4.4 ------ UNKNOWN
211.3244 31.6816 3.1 56.4 -157.3 5.2936 3.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
1.000000 65.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.6378 -40.6118 3.5 44.4 30.2 -0.8325 -3.3 6.0 Vela X-1
170.0688 -60.6466 8.0 47.7 -10.3 -0.2825 -1.4 7.4 Cen X-3
186.4383 -62.7414 6.8 50.2 -20.4 -0.4002 -1.7 6.2 GX 301-2
176.4012 -6.8411 3.1 6.3 173.5 0.3734 3.8 ------ UNKNOWN
218.3477 11.6852 2.3 49.1 -132.4 2.5085 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
98.700600 783.016400
841.000000 963.133600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.4726 -40.5557 11.7 49.6 21.9 1.5911 1.0 2.6 Vela X-1
170.1653 -60.5640 11.8 53.9 -15.1 -1.4193 -1.0 5.7 Cen X-3
186.6640 -62.8718 551.5 56.5 -24.5 -0.0553 -0.0 6.1 GX 301-2
159.0939 40.7841 3.4 50.3 144.1 9.2693 3.4 ------ UNKNOWN
165.7042 -40.6623 2.6 35.1 -4.7 3.0321 4.4 ------ UNKNOWN
193.5159 -11.3094 3.3 17.5 -93.1 1.7559 3.5 ------ UNKNOWN
215.9998 -21.7435 2.7 41.0 -83.5 11.2127 4.3 ------ UNKNOWN
Plot creation:
Mon Nov 21 20:37:39 EST 2016