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
282.0731 -2.4211 0.0418 28.1 -179.2 1.7117 4.6 TRIG_00707545
------------------------------------------
Foreground time interval of the image:
0.000 174.050 (delta_t = 174.050 [sec])
175.000 376.000 (delta_t = 201.000 [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 174.050000
175.000000 376.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.92806 ( -0.450211 0.565415 )
Norm@50keV : 1.64280E-04 ( -6.86813e-05 7.47095e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.92 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.701226e-01
Photon flux (15-150 keV) in 375 sec: 4.28973E-02 ( -0.00860447 0.00863848 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.16786e-07 ( -1.82561e-07 2.00451e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 174.050000
175.000000 376.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.838283 ( )
Epeak [keV] : 17.4670 ( )
Norm@50keV : 4.36788E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.96 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 56 degrees of freedom
# Null hypothesis probability = 4.392953e-01
Photon flux (15-150 keV) in 375 sec: 4.25077E-02 ( -0.0082907 0.0081597 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.58324e-07 ( -1.48316e-07 1.6794e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 174.050000
175.000000 376.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.536069 ( -1.73368 2.41992 )
beta : -10.0000 ( 10 3.55271e-15 )
Epeak [keV] : 19.2706 ( -10.9664 8.87654 )
Norm@50keV : 6.94771E-03 ( -0.00746296 1.61355 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.91 using 59 PHA bins.
# Reduced chi-squared = 1.035 for 55 degrees of freedom
# Null hypothesis probability = 4.038989e-01
Photon flux (15-150 keV) in 375 sec: 4.90783E-02 ( 6.95092 -0.0119334 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.5649e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.31019 (-1.21817 1.33904)
R^2/D10^2 : 0.132244 (-0.0741609 0.201382)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.14 using 59 PHA bins.
# Reduced chi-squared = 1.020 for 57 degrees of freedom
# Null hypothesis probability = 4.330846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.811e-07 1.076e-07
25- 50 3.122e-07 1.289e-07
50-150 3.500e-08 2.552e-08
15-150 6.283e-07 2.519e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 20.5555 (-6.78571 10.6665)
Norm : 0.515537 (-0.188435 0.349262)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.23 using 59 PHA bins.
# Reduced chi-squared = 1.004 for 57 degrees of freedom
# Null hypothesis probability = 4.663538e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.068e-07 9.000e-08
25- 50 2.743e-07 1.144e-07
50-150 8.600e-08 6.373e-08
15-150 6.671e-07 2.325e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.93879 (-2.18867 3.1248)
R1^2/D10^2 : 30.6289 (-13.1887 -13.2631)
kT2 [keV] : 7.30195 (-1.6979 1.8281)
R2^2/D10^2 : 6.21243E-02 (-0.0523555 0.050367)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.15 using 59 PHA bins.
#Fit statistic : Chi-Squared = 55.07 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 55 degrees of freedom
# Reduced chi-squared = 1.001 for 55 degrees of freedom
# Null hypothesis probability = 4.688151e-01
# Null hypothesis probability = 4.719242e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.920e-07 1.391e-07
25- 50 3.079e-07 1.825e-07
50-150 6.245e-08 4.267e-08
15-150 6.623e-07 3.439e-07
Peak spectrum fit
Power-law model
Time interval is from 175.000 sec. to 376.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.92806 ( -0.450211 0.565415 )
Norm@50keV : 1.64280E-04 ( -6.86813e-05 7.47095e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.92 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.701226e-01
Photon flux (15-150 keV) in 375 sec: 4.28973E-02 ( -0.00860447 0.00863848 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.16786e-07 ( -1.82561e-07 2.00451e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 175.000 sec. to 376.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.838283 ( )
Epeak [keV] : 17.4670 ( )
Norm@50keV : 4.36788E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.96 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 56 degrees of freedom
# Null hypothesis probability = 4.392953e-01
Photon flux (15-150 keV) in 375 sec: 4.25077E-02 ( -0.0082907 0.0081597 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.58324e-07 ( -1.48316e-07 1.6794e-07 ) ergs/cm2
Band function
Time interval is from 175.000 sec. to 376.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.536069 ( -1.73368 2.41992 )
beta : -10.0000 ( 10 7.10543e-15 )
Epeak [keV] : 19.2706 ( -10.9664 8.87546 )
Norm@50keV : 6.94771E-03 ( -0.00746296 1.61355 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.91 using 59 PHA bins.
# Reduced chi-squared = 1.035 for 55 degrees of freedom
# Null hypothesis probability = 4.038989e-01
Photon flux (15-150 keV) in 375 sec: 4.90783E-02 ( 6.95092 -0.0119334 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.5649e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.31019 (-1.21817 1.33904)
R^2/D10^2 : 0.132244 (-0.0741609 0.201382)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.14 using 59 PHA bins.
# Reduced chi-squared = 1.020 for 57 degrees of freedom
# Null hypothesis probability = 4.330846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.811e-07 1.031e-07
25- 50 3.122e-07 1.179e-07
50-150 3.500e-08 2.409e-08
15-150 6.283e-07 2.181e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 20.5555 (-6.78571 10.6665)
Norm : 0.515537 (-0.188435 0.349262)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.23 using 59 PHA bins.
# Reduced chi-squared = 1.004 for 57 degrees of freedom
# Null hypothesis probability = 4.663538e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.068e-07 1.027e-07
25- 50 2.743e-07 1.088e-07
50-150 8.600e-08 6.569e-08
15-150 6.671e-07 2.572e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.93879 (-1.98867 3.14727)
R1^2/D10^2 : 30.6289 (-13.1887 -13.2631)
kT2 [keV] : 7.30195 (-1.6979 1.8281)
R2^2/D10^2 : 6.21243E-02 (-0.0523555 0.050367)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.15 using 59 PHA bins.
#Fit statistic : Chi-Squared = 55.07 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 55 degrees of freedom
# Reduced chi-squared = 1.001 for 55 degrees of freedom
# Null hypothesis probability = 4.688151e-01
# Null hypothesis probability = 4.719242e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.920e-07 1.427e-07
25- 50 3.079e-07 1.899e-07
50-150 6.245e-08 4.629e-08
15-150 6.623e-07 3.484e-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: 2.92806 ( -0.450211 0.565415 )
Norm@50keV : 1.64280E-04 ( -6.86813e-05 7.47095e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.92 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.701226e-01
Photon flux (15-150 keV) in 375 sec: 4.28973E-02 ( -0.00860447 0.00863848 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.16786e-07 ( -1.82561e-07 2.00451e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.838283 ( )
Epeak [keV] : 17.4670 ( )
Norm@50keV : 4.36788E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.96 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 56 degrees of freedom
# Null hypothesis probability = 4.392953e-01
Photon flux (15-150 keV) in 375 sec: 4.25077E-02 ( -0.0082907 0.0081597 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.58324e-07 ( -1.48316e-07 1.6794e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.536069 ( -1.73368 2.41992 )
beta : -10.0000 ( 10 0 )
Epeak [keV] : 19.2706 ( -10.9664 8.87555 )
Norm@50keV : 6.94771E-03 ( -0.00746296 1.61355 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.91 using 59 PHA bins.
# Reduced chi-squared = 1.035 for 55 degrees of freedom
# Null hypothesis probability = 4.038989e-01
Photon flux (15-150 keV) in 375 sec: 4.90783E-02 ( 6.95092 -0.0119334 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.5649e-07 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 2.40e-07
S(50-100 keV) = 1.26e-07
T90 vs. Hardness ratio plot
T90 = 376 sec.
Hardness ratio (energy fluence ratio) = 0.525
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.01771
Count Ratio (50-100 keV) / (15-25 keV) = -0.0583978
Mask shadow pattern
IMX = -5.332582832782641E-01, IMY = 7.770506003850750E-03
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 174.050000
175.000000 376.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
262.9754 -24.7119 10.2 54.5 162.3 -2.3355 -1.1 2.7 GX 1+4
268.2425 -1.3840 6.9 41.1 -170.8 -0.7688 -1.7 8.6 SW J1753.5-0127
270.1485 -25.1607 17.4 49.3 157.3 0.7627 0.7 8.8 GX 5-1
270.3951 -25.7068 6.7 49.4 156.6 2.0737 1.7 5.5 GRS 1758-258
274.0211 -14.0835 2.8 40.2 167.8 2.3955 4.1 3.0 GX 17+2
276.0099 -30.4820 8.4 48.7 147.5 1.9424 1.4 8.2 H1820-303
285.1508 -24.8063 4.7 39.1 144.3 -1.6510 -2.4 9.3 HT1900.1-2455
288.7844 10.7821 13.3 19.9 -148.0 0.2749 0.9 9.8 GRS 1915+105
299.5882 35.1911 0.4 29.4 -85.7 14.1592 29.0 0.6 Cyg X-1
308.0980 40.9536 4.0 34.0 -71.3 1.7715 2.9 0.6 Cyg X-3
326.1028 38.3098 6.6 35.1 -46.4 0.9061 1.7 3.3 Cyg X-2
358.9914 12.3199 3.7 49.9 9.1 2.5199 3.1 ------ UNKNOWN
356.2305 31.9329 2.4 50.8 -16.6 3.7528 4.8 ------ UNKNOWN
289.4860 43.4092 2.2 40.1 -92.2 7.2064 5.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
461.200600 963.047400
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9922 -15.6432 0.3 38.8 -136.6 27.0435 33.4 0.8 Sco X-1
254.5943 35.4520 3.8 45.8 -56.0 -6.2960 -3.0 9.4 Her X-1
256.0230 -37.8827 26.3 42.8 -173.7 0.3404 0.4 2.9 4U 1700-377
256.5245 -36.5118 4.8 41.4 -172.8 1.6978 2.4 6.8 GX 349+2
263.0594 -24.9460 0.0 29.0 -166.9 0.6743 1.3 12.3 GX 1+4
264.9453 -44.3604 7.5 44.6 173.1 -1.6369 -1.5 10.2 4U 1735-44
268.5611 -1.3886 3.9 13.5 -110.3 1.4074 3.0 12.2 SW J1753.5-0127
270.3960 -25.0045 3.9 25.2 -178.9 1.4527 2.9 7.6 GX 5-1
270.2815 -25.6667 3.8 25.9 -179.4 1.5363 3.0 4.7 GRS 1758-258
274.0216 -14.0375 1.7 14.1 -170.4 3.3552 6.9 0.9 GX 17+2
276.0688 -30.4166 5.6 28.6 166.5 1.0697 2.1 8.0 H1820-303
285.2315 -24.8328 235.7 22.6 148.1 -0.0228 -0.0 11.9 HT1900.1-2455
288.6749 11.0287 2.7 15.0 1.5 1.7750 4.3 8.8 GRS 1915+105
299.5973 35.2069 0.4 41.0 -2.4 18.9239 27.7 0.5 Cyg X-1
308.0851 41.0017 4.5 49.5 1.4 2.6592 2.6 3.2 Cyg X-3
263.0109 -33.8626 6.4 36.1 -177.0 1.1939 1.8 2.0 GX 354-0
317.9973 -14.8133 3.1 37.5 87.0 5.3149 3.7 ------ UNKNOWN
315.2985 -8.1164 3.0 33.6 76.7 3.0434 3.8 ------ UNKNOWN
311.7061 -4.9721 2.9 29.7 71.4 2.7757 4.0 ------ UNKNOWN
266.5627 23.2340 3.2 29.8 -54.1 2.2656 3.6 ------ UNKNOWN
Plot creation:
Sun Aug 7 14:50:50 EDT 2016