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
78.4000 +62.4217 0.0427 30.6 -6.1 0.0542 4.5 TRIG_00779171
------------------------------------------
Foreground time interval of the image:
0.000 1.024 (delta_t = 1.024 [sec])
Background time interval of the image:
-239.432 -56.468 (delta_t = 182.964 [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 1.024000
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 1.024000
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 1.024000
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: 2.36229 ( -0.775234 1.11714 )
Norm@50keV : 2.00240E-03 ( -0.00133635 0.00135329 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.49 using 59 PHA bins.
# Reduced chi-squared = 1.149 for 57 degrees of freedom
# Null hypothesis probability = 2.060202e-01
Photon flux (15-150 keV) in 1.024 sec: 0.362470 ( -0.163497 0.163955 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.98316e-08 ( -1.04207e-08 1.17968e-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: -7.25525 ( 7.29501 9.2429 )
Epeak [keV] : 32.4550 ( -7.05498 8.662 )
Norm@50keV : 2744.59 ( -3142.07 206190 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.36 using 59 PHA bins.
# Reduced chi-squared = 1.114 for 56 degrees of freedom
# Null hypothesis probability = 2.604989e-01
Photon flux (15-150 keV) in 1.024 sec: 0.325015 ( -0.140397 0.16281 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59955e-08 ( -6.7385e-09 7.61979e-09 ) 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 ( -14.3038 -5 )
beta : -7.47076 ( 7.59183 17.3961 )
Epeak [keV] : 32.0691 ( -7.1543 7.76416 )
Norm@50keV : 109.241 ( -44.235 869.313 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.44 using 59 PHA bins.
# Reduced chi-squared = 1.135 for 55 degrees of freedom
# Null hypothesis probability = 2.287625e-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] : 7.76952 (-2.30915 3.22923)
R^2/D10^2 : 0.509251 (-0.508228 1.55881)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.19 using 59 PHA bins.
# Reduced chi-squared = 1.109 for 57 degrees of freedom
# Null hypothesis probability = 2.669248e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.565e-09 3.556e-09
25- 50 9.252e-09 5.960e-09
50-150 2.205e-09 1.936e-09
15-150 1.702e-08 1.177e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 34.1979 (-20.3109 95.2481)
Norm : 2.72372 (-1.57645 4.04894)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.63 using 59 PHA bins.
# Reduced chi-squared = 1.134 for 57 degrees of freedom
# Null hypothesis probability = 2.276465e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.035e-09 3.882e-09
25- 50 7.384e-09 4.887e-09
50-150 4.769e-09 4.520e-09
15-150 1.819e-08 1.197e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.00093E-04 (-0.000100093 -0.000100093)
R1^2/D10^2 : 5.92367E-02 (-0.0592371 -0.0592371)
kT2 [keV] : 7.77307 (-2.30753 3.23087)
R2^2/D10^2 : 0.508374 (-0.508082 1.56353)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.20 using 59 PHA bins.
#Fit statistic : Chi-Squared = 63.19 using 59 PHA bins.
# Reduced chi-squared = 1.149 for 55 degrees of freedom
# Reduced chi-squared = 1.149 for 55 degrees of freedom
# Null hypothesis probability = 2.091970e-01
# Null hypothesis probability = 2.094758e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.450e-09 5.072e-04
25- 50 9.350e-09 4.650e-03
50-150 2.373e-09 9.805e-02
15-150 1.717e-08 1.134e-01
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: 2.36229 ( -0.775234 1.11714 )
Norm@50keV : 2.00240E-03 ( -0.00133635 0.00135329 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.49 using 59 PHA bins.
# Reduced chi-squared = 1.149 for 57 degrees of freedom
# Null hypothesis probability = 2.060202e-01
Photon flux (15-150 keV) in 1.024 sec: 0.362470 ( -0.163497 0.163955 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.98316e-08 ( -1.04207e-08 1.17968e-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: -7.25525 ( 7.29501 9.2429 )
Epeak [keV] : 32.4550 ( -7.05498 8.662 )
Norm@50keV : 2744.59 ( -3142.07 206190 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.36 using 59 PHA bins.
# Reduced chi-squared = 1.114 for 56 degrees of freedom
# Null hypothesis probability = 2.604989e-01
Photon flux (15-150 keV) in 1.024 sec: 0.325015 ( -0.140397 0.16281 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59955e-08 ( -6.7385e-09 7.61979e-09 ) 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 ( -6.54924 -5 )
beta : -7.47076 ( 7.59183 17.3961 )
Epeak [keV] : 32.0691 ( -7.1543 7.76416 )
Norm@50keV : 109.241 ( -44.235 869.313 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.44 using 59 PHA bins.
# Reduced chi-squared = 1.135 for 55 degrees of freedom
# Null hypothesis probability = 2.287625e-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] : 7.76952 (-2.30915 3.22923)
R^2/D10^2 : 0.509251 (-0.508228 1.55881)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.19 using 59 PHA bins.
# Reduced chi-squared = 1.109 for 57 degrees of freedom
# Null hypothesis probability = 2.669248e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.565e-09 3.545e-09
25- 50 9.252e-09 6.272e-09
50-150 2.205e-09 2.009e-09
15-150 1.702e-08 1.067e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 34.1979 (-20.3109 95.2481)
Norm : 2.72372 (-1.57645 4.04894)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.63 using 59 PHA bins.
# Reduced chi-squared = 1.134 for 57 degrees of freedom
# Null hypothesis probability = 2.276465e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.035e-09 3.934e-09
25- 50 7.384e-09 4.660e-09
50-150 4.769e-09 4.363e-09
15-150 1.819e-08 1.304e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.00093E-04 (-0.000100093 -0.000100093)
R1^2/D10^2 : 5.92367E-02 (-0.0592371 -0.0592371)
kT2 [keV] : 7.77307 (-2.30753 3.23087)
R2^2/D10^2 : 0.508374 (-0.508082 1.56353)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.20 using 59 PHA bins.
#Fit statistic : Chi-Squared = 63.19 using 59 PHA bins.
# Reduced chi-squared = 1.149 for 55 degrees of freedom
# Reduced chi-squared = 1.149 for 55 degrees of freedom
# Null hypothesis probability = 2.091970e-01
# Null hypothesis probability = 2.094758e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.450e-09 5.745e-04
25- 50 9.350e-09 4.643e-03
50-150 2.373e-09 1.180e-01
15-150 1.717e-08 1.316e-01
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: 2.36229 ( -0.775234 1.11714 )
Norm@50keV : 2.00240E-03 ( -0.00133635 0.00135329 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.49 using 59 PHA bins.
# Reduced chi-squared = 1.149 for 57 degrees of freedom
# Null hypothesis probability = 2.060202e-01
Photon flux (15-150 keV) in 1.024 sec: 0.362470 ( -0.163497 0.163955 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.98316e-08 ( -1.04207e-08 1.17968e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -7.25525 ( 7.29501 9.2429 )
Epeak [keV] : 32.4550 ( -7.05498 8.662 )
Norm@50keV : 2744.59 ( -3142.07 206190 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.36 using 59 PHA bins.
# Reduced chi-squared = 1.114 for 56 degrees of freedom
# Null hypothesis probability = 2.604989e-01
Photon flux (15-150 keV) in 1.024 sec: 0.325015 ( -0.140397 0.16281 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59955e-08 ( -6.7385e-09 7.61979e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -7.06973 -5 )
beta : -7.47076 ( 7.59183 17.3961 )
Epeak [keV] : 32.0691 ( -7.1543 7.76416 )
Norm@50keV : 109.241 ( -44.235 869.313 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.44 using 59 PHA bins.
# Reduced chi-squared = 1.135 for 55 degrees of freedom
# Null hypothesis probability = 2.287625e-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) = 6.47e-09
S(50-100 keV) = 5.03e-09
T90 vs. Hardness ratio plot
T90 = 1.02399998903275 sec.
Hardness ratio (energy fluence ratio) = 0.777434
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.19967
Count Ratio (50-100 keV) / (15-25 keV) = 0.0538211
Mask shadow pattern
IMX = 5.875896222595145E-01, IMY = 6.293306148628705E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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:
-239.432000 -56.468000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.4622 35.3357 5.7 48.9 -158.1 -1.0792 -2.0 10.2 Cyg X-1
308.0854 40.9448 91.4 40.4 -161.7 0.0433 0.1 1.2 Cyg X-3
326.1281 38.1658 4.7 35.3 176.7 -0.7098 -2.5 9.6 Cyg X-2
60.7122 34.5118 2.2 43.8 39.9 2.8268 5.2 ------ UNKNOWN
320.9875 19.5902 3.4 53.9 170.8 3.2985 3.5 ------ UNKNOWN
40.9230 61.4256 0.2 15.7 18.2 14.0224 70.7 ------ UNKNOWN
106.8513 55.7799 2.4 45.5 -15.0 1.6566 4.7 ------ UNKNOWN
145.3661 73.7200 2.8 39.5 -48.9 1.6797 4.2 ------ 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] [']
299.7223 35.2342 4.9 48.8 -158.5 0.0634 2.4 6.8 Cyg X-1
308.0645 41.0160 4.5 40.4 -161.7 -0.0451 -2.6 4.3 Cyg X-3
326.3336 38.2908 6.8 35.1 176.5 -0.0254 -1.7 7.8 Cyg X-2
46.6851 51.0884 2.2 24.4 37.1 0.0677 5.2 ------ UNKNOWN
24.7408 73.1990 2.4 11.1 -38.3 0.0508 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
79.068610 955.568600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6331 22.0140 0.5 40.5 18.4 35.2368 25.5 0.0 Crab
330.9925 50.2611 2.9 53.7 156.6 17.3778 4.0 ------ UNKNOWN
40.9139 61.4265 0.2 17.5 129.5 64.9131 75.4 ------ UNKNOWN
303.5624 55.6480 3.4 56.9 177.3 17.8996 3.4 ------ UNKNOWN
96.4546 17.4830 3.5 46.6 1.9 5.1357 3.3 ------ UNKNOWN
300.7167 56.1968 3.3 57.0 179.3 20.0975 3.5 ------ UNKNOWN
130.2134 55.3574 2.8 26.9 -73.1 4.8994 4.1 ------ UNKNOWN
148.2396 66.6159 3.3 28.7 -103.4 5.1529 3.6 ------ UNKNOWN
201.3139 66.6408 3.2 44.5 -125.8 12.4762 3.6 ------ UNKNOWN
Plot creation:
Mon Oct 16 19:46:35 EDT 2017