Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
266.4078 -29.0628 0.0240 8.2984 -84.8610 6.2112555 8.002 TRIG_00689956
Foreground time interval of the image:
0.000 944.000 (delta_t = 944.000 [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
Time interval is from 0.000 sec. to 944.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.82334 ( -0.160145 0.164123 )
Norm@50keV : 3.84731E-04 ( -3.71298e-05 3.65798e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.97 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 57 degrees of freedom
# Null hypothesis probability = 4.729243e-02
Photon flux (15-150 keV) in 944 sec: 5.35023E-02 ( -0.00463449 0.00464277 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.34115e-06 ( -3.241e-07 3.28491e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 944.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.56756 ( -0.726872 0.607014 )
Epeak [keV] : 76.3928 ( -68.1892 -76.3967 )
Norm@50keV : 5.29814E-04 ( -0.000255171 0.000767624 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.51 using 59 PHA bins.
# Reduced chi-squared = 1.348 for 56 degrees of freedom
# Null hypothesis probability = 4.220123e-02
Photon flux (15-150 keV) in 944 sec: 5.27509E-02 ( -0.005006 0.0049751 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.2529e-06 ( -3.88786e-07 3.82046e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 944.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.37991 ( 1.39108 1.39108 )
beta : -2.05395 ( 2.05962 0.373745 )
Epeak [keV] : 58.6228 ( -60.3675 61.7872 )
Norm@50keV : 6.84722E-04 ( -0.000258829 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.26 using 59 PHA bins.
# Reduced chi-squared = 1.368 for 55 degrees of freedom
# Null hypothesis probability = 3.617354e-02
Photon flux (15-150 keV) in 944 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.24559e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.7928 (-1.19102 1.34097)
R^2/D10^2 : 1.32227E-02 (-0.00439198 0.00651791)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 104.01 using 59 PHA bins.
# Reduced chi-squared = 1.8247 for 57 degrees of freedom
# Null hypothesis probability = 1.435508e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.665e-07 5.768e-08
25- 50 1.130e-06 1.251e-07
50-150 9.338e-07 1.902e-07
15-150 2.430e-06 2.492e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 97.0215 (-26.7616 47.6843)
Norm : 0.235749 (-0.0285276 0.0344899)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.93 using 59 PHA bins.
# Reduced chi-squared = 1.332 for 57 degrees of freedom
# Null hypothesis probability = 4.762541e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.816e-07 8.076e-08
25- 50 9.994e-07 9.690e-08
50-150 1.592e-06 5.740e-07
15-150 3.173e-06 6.230e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.80181 (-1.49366 3.00071)
R1^2/D10^2 : 0.240590 (-0.189873 1.02561)
kT2 [keV] : 17.3033 (-3.38826 12.3632)
R2^2/D10^2 : 2.61039E-03 (-0.00227749 0.0036757)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.43 using 59 PHA bins.
# Reduced chi-squared = 1.426 for 55 degrees of freedom
# Null hypothesis probability = 2.070975e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.180e-07 2.988e-07
25- 50 9.474e-07 3.261e-07
50-150 1.451e-06 5.941e-07
15-150 3.017e-06 1.018e-06
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 944.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.82334 ( -0.160145 0.164123 )
Norm@50keV : 3.84731E-04 ( -3.71298e-05 3.65798e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.97 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 57 degrees of freedom
# Null hypothesis probability = 4.729243e-02
Photon flux (15-150 keV) in 944 sec: 5.35023E-02 ( -0.00463449 0.00464277 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.34115e-06 ( -3.241e-07 3.28491e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 944.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.56756 ( -0.726872 0.607014 )
Epeak [keV] : 76.3928 ( -68.1892 -76.3967 )
Norm@50keV : 5.29814E-04 ( -0.000255171 0.000767624 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.51 using 59 PHA bins.
# Reduced chi-squared = 1.348 for 56 degrees of freedom
# Null hypothesis probability = 4.220123e-02
Photon flux (15-150 keV) in 944 sec: 5.27509E-02 ( -0.005006 0.0049751 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.2529e-06 ( -3.88786e-07 3.82046e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 944.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.37991 ( 1.39108 1.39108 )
beta : -2.05395 ( 2.05962 0.373745 )
Epeak [keV] : 58.6228 ( -60.3675 61.7872 )
Norm@50keV : 6.84722E-04 ( -0.000258829 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.26 using 59 PHA bins.
# Reduced chi-squared = 1.368 for 55 degrees of freedom
# Null hypothesis probability = 3.617354e-02
Photon flux (15-150 keV) in 944 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.24559e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.7928 (-1.19102 1.34097)
R^2/D10^2 : 1.32227E-02 (-0.00439198 0.00651791)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 104.01 using 59 PHA bins.
# Reduced chi-squared = 1.8247 for 57 degrees of freedom
# Null hypothesis probability = 1.435508e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.665e-07 6.499e-08
25- 50 1.130e-06 1.251e-07
50-150 9.338e-07 1.865e-07
15-150 2.430e-06 2.723e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 97.0215 (-26.7616 47.6843)
Norm : 0.235749 (-0.0285276 0.0344899)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.93 using 59 PHA bins.
# Reduced chi-squared = 1.332 for 57 degrees of freedom
# Null hypothesis probability = 4.762541e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.816e-07 7.373e-08
25- 50 9.994e-07 9.964e-08
50-150 1.592e-06 6.226e-07
15-150 3.173e-06 6.160e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.80181 (-1.49366 3.00071)
R1^2/D10^2 : 0.240590 (-0.189873 1.02561)
kT2 [keV] : 17.3033 (-3.38826 12.3632)
R2^2/D10^2 : 2.61039E-03 (-0.00227749 0.0036757)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.43 using 59 PHA bins.
# Reduced chi-squared = 1.426 for 55 degrees of freedom
# Null hypothesis probability = 2.070975e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.180e-07 2.929e-07
25- 50 9.474e-07 3.069e-07
50-150 1.451e-06 6.160e-07
15-150 3.017e-06 9.888e-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: 1.82334 ( -0.160145 0.164123 )
Norm@50keV : 3.84731E-04 ( -3.71298e-05 3.65798e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.97 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 57 degrees of freedom
# Null hypothesis probability = 4.729243e-02
Photon flux (15-150 keV) in 944 sec: 5.35023E-02 ( -0.00463449 0.00464277 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.34115e-06 ( -3.241e-07 3.28491e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.56756 ( -0.726872 0.607014 )
Epeak [keV] : 76.3928 ( -68.1892 -76.3967 )
Norm@50keV : 5.29814E-04 ( -0.000255171 0.000767624 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.51 using 59 PHA bins.
# Reduced chi-squared = 1.348 for 56 degrees of freedom
# Null hypothesis probability = 4.220123e-02
Photon flux (15-150 keV) in 944 sec: 5.27509E-02 ( -0.005006 0.0049751 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.2529e-06 ( -3.88786e-07 3.82046e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.37991 ( 1.39108 1.39108 )
beta : -2.05395 ( 2.05962 0.373745 )
Epeak [keV] : 58.6228 ( -60.3675 61.7872 )
Norm@50keV : 6.84722E-04 ( -0.000258829 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.26 using 59 PHA bins.
# Reduced chi-squared = 1.368 for 55 degrees of freedom
# Null hypothesis probability = 3.617354e-02
Photon flux (15-150 keV) in 944 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.24559e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 9.49e-07
S(50-100 keV) = 1.07e-06
T90 vs. Hardness ratio plot
T90 = 944 sec.
Hardness ratio (energy fluence ratio) = 1.1275
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.00956
Count Ratio (50-100 keV) / (15-25 keV) = 0.570119
Mask shadow pattern
IMX = 1.306467582719290E-02, IMY = 1.452694342139665E-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 944.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9750 -15.6362 0.2 16.0 118.3 41.9232 52.7 0.4 Sco X-1
255.9613 -37.8424 0.7 11.2 -7.3 13.6301 16.6 1.2 4U 1700-377
256.3794 -36.4146 8.4 9.7 -8.3 1.1106 1.4 2.8 GX 349+2
263.2010 -24.6266 0.0 5.7 -123.9 1.8853 2.3 12.7 GX 1+4
264.7921 -44.4893 5.9 18.7 -29.8 1.5031 1.9 3.2 4U 1735-44
268.4034 -1.3857 6.4 27.5 -168.7 1.4399 1.8 4.5 SW J1753.5-0127
270.3105 -25.1102 3.0 11.7 -108.3 3.3407 3.8 2.3 GX 5-1
270.3281 -25.7258 2.8 11.6 -105.3 3.9932 4.6 1.7 GRS 1758-258
273.9710 -14.0100 2.9 20.1 -139.3 3.6074 4.0 2.6 GX 17+2
275.9107 -30.3947 2.9 16.7 -86.1 2.8246 3.9 1.8 H1820-303
284.8712 -25.0478 8.6 24.7 -100.9 1.2960 1.3 11.8 HT1900.1-2455
288.8159 10.9449 34.3 48.5 -150.0 0.6369 0.3 1.0 GRS 1915+105
262.9456 -33.9797 9.5 8.7 -45.3 1.0193 1.2 9.0 GX 354-0
216.5240 -51.6172 2.6 39.5 26.6 6.4849 4.5 ------ UNKNOWN
198.9504 -72.4533 2.4 55.2 5.1 15.0784 4.8 ------ UNKNOWN
262.8854 -16.9490 3.3 11.0 -164.5 2.6571 3.6 ------ UNKNOWN
266.4078 -29.0630 1.4 8.3 -84.9 6.2046 8.0 ------ UNKNOWN
302.7801 -22.9175 7.0 41.2 -98.2 7.8057 1.7 ------ UNKNOWN
299.3644 -0.6593 3.5 48.0 -129.0 13.8958 3.3 ------ UNKNOWN
298.6322 4.9630 3.3 51.0 -135.4 17.4795 3.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Thu Jun 9 21:48:31 EDT 2016