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
293.7153 +21.8498 0.0295 29.8 -137.7 0.0167 6.5 TRIG_00686842
------------------------------------------
Foreground time interval of the image:
0.000 0.008 (delta_t = 0.008 [sec])
Background time interval of the image:
-157.067 -55.739 (delta_t = 101.328 [sec])
-54.168 -6.168 (delta_t = 48.000 [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 0.008000
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 0.008000
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 0.008000
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 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.52991 ( -0.597064 0.669546 )
Norm@50keV : 7.23139E-02 ( -0.0330446 0.0326273 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.21 using 59 PHA bins.
# Reduced chi-squared = 0.5827 for 57 degrees of freedom
# Null hypothesis probability = 9.950685e-01
Photon flux (15-150 keV) in 0.008 sec: 14.4700 ( -4.47423 4.47474 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.83266e-09 ( -2.00634e-09 2.0937e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.19430 ( )
Epeak [keV] : 20.0195 ( )
Norm@50keV : 0.569206 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.90 using 59 PHA bins.
# Reduced chi-squared = 0.5876 for 56 degrees of freedom
# Null hypothesis probability = 9.941249e-01
Photon flux (15-150 keV) in 0.008 sec: 14.5231 ( -4.53638 4.5628 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.34465e-09 ( -1.70977e-09 2.42543e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.82150 ( 1.8215 1.8215 )
beta : -8.90972 ( 8.50092 18.4856 )
Epeak [keV] : 8.45495 ( -4.49411 -8.43258 )
Norm@50keV : 0.218151 ( -0.0663253 1.33766e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.97 using 59 PHA bins.
# Reduced chi-squared = 0.5995 for 55 degrees of freedom
# Null hypothesis probability = 9.919437e-01
Photon flux (15-150 keV) in 0.008 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] : 7.60723 (-1.64355 1.91191)
R^2/D10^2 : 21.7731 (-14.4516 38.732)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.84 using 59 PHA bins.
# Reduced chi-squared = 0.5937 for 57 degrees of freedom
# Null hypothesis probability = 9.937260e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.751e-09 9.423e-10
25- 50 2.803e-09 1.300e-09
50-150 6.219e-10 4.196e-10
15-150 5.176e-09 2.504e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 29.1409 (-12.0307 31.9855)
Norm : 123.364 (-61.9474 104.186)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.91 using 59 PHA bins.
# Reduced chi-squared = 0.5774 for 57 degrees of freedom
# Null hypothesis probability = 9.956262e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.978e-09 9.170e-10
25- 50 2.224e-09 1.132e-09
50-150 1.172e-09 8.913e-10
15-150 5.375e-09 2.714e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.80561 (-2.77329 28.042)
R1^2/D10^2 : 812.023 (-915.71 -915.71)
kT2 [keV] : 8.76668 (-2.28003 -8.70246)
R2^2/D10^2 : 9.53923 (-10.068 34.9505)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.62 using 59 PHA bins.
# Reduced chi-squared = 0.5930 for 55 degrees of freedom
# Null hypothesis probability = 9.929542e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.917e-09 1.011e-09
25- 50 2.386e-09 1.460e-09
50-150 8.076e-10 5.424e-10
15-150 5.111e-09 2.670e-09
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.52991 ( -0.597064 0.669546 )
Norm@50keV : 7.23139E-02 ( -0.0330446 0.0326273 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.21 using 59 PHA bins.
# Reduced chi-squared = 0.5827 for 57 degrees of freedom
# Null hypothesis probability = 9.950685e-01
Photon flux (15-150 keV) in 0.008 sec: 14.4700 ( -4.47423 4.47474 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.83266e-09 ( -2.00634e-09 2.0937e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.19430 ( )
Epeak [keV] : 20.0195 ( )
Norm@50keV : 0.569206 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.90 using 59 PHA bins.
# Reduced chi-squared = 0.5876 for 56 degrees of freedom
# Null hypothesis probability = 9.941249e-01
Photon flux (15-150 keV) in 0.008 sec: 14.5231 ( -4.53638 4.5628 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.34465e-09 ( -1.70977e-09 2.42543e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.82150 ( 1.8215 1.8215 )
beta : -8.90972 ( 8.50092 18.4856 )
Epeak [keV] : 8.45495 ( -4.49411 -8.43258 )
Norm@50keV : 0.218151 ( -0.0663253 1.33766e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.97 using 59 PHA bins.
# Reduced chi-squared = 0.5995 for 55 degrees of freedom
# Null hypothesis probability = 9.919437e-01
Photon flux (15-150 keV) in 0.008 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] : 7.60723 (-1.64355 1.91191)
R^2/D10^2 : 21.7731 (-14.4516 38.732)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.84 using 59 PHA bins.
# Reduced chi-squared = 0.5937 for 57 degrees of freedom
# Null hypothesis probability = 9.937260e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.751e-09 9.694e-10
25- 50 2.803e-09 1.542e-09
50-150 6.219e-10 4.640e-10
15-150 5.176e-09 2.584e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 29.1409 (-12.0307 31.9855)
Norm : 123.364 (-61.9474 104.186)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.91 using 59 PHA bins.
# Reduced chi-squared = 0.5774 for 57 degrees of freedom
# Null hypothesis probability = 9.956262e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.978e-09 9.226e-10
25- 50 2.224e-09 9.871e-10
50-150 1.172e-09 8.824e-10
15-150 5.375e-09 2.578e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.80561 (-2.77329 28.042)
R1^2/D10^2 : 812.023 (-915.71 -915.71)
kT2 [keV] : 8.76668 (-2.28003 -8.70246)
R2^2/D10^2 : 9.53923 (-10.068 34.9505)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.62 using 59 PHA bins.
# Reduced chi-squared = 0.5930 for 55 degrees of freedom
# Null hypothesis probability = 9.929542e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.917e-09 9.460e-10
25- 50 2.386e-09 1.406e-09
50-150 8.076e-10 5.348e-10
15-150 5.111e-09 2.791e-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: 2.52991 ( -0.597064 0.669546 )
Norm@50keV : 7.23139E-02 ( -0.0330446 0.0326273 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.21 using 59 PHA bins.
# Reduced chi-squared = 0.5827 for 57 degrees of freedom
# Null hypothesis probability = 9.950685e-01
Photon flux (15-150 keV) in 0.008 sec: 14.4700 ( -4.47423 4.47474 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.83266e-09 ( -2.00634e-09 2.0937e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.19430 ( )
Epeak [keV] : 20.0195 ( )
Norm@50keV : 0.569206 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.90 using 59 PHA bins.
# Reduced chi-squared = 0.5876 for 56 degrees of freedom
# Null hypothesis probability = 9.941249e-01
Photon flux (15-150 keV) in 0.008 sec: 14.5231 ( -4.53638 4.5628 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.34465e-09 ( -1.70977e-09 2.42543e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.82150 ( 1.8215 1.8215 )
beta : -8.90972 ( 8.50092 18.4856 )
Epeak [keV] : 8.45495 ( -4.49411 -8.43258 )
Norm@50keV : 0.218151 ( -0.0663253 1.33766e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.97 using 59 PHA bins.
# Reduced chi-squared = 0.5995 for 55 degrees of freedom
# Null hypothesis probability = 9.919437e-01
Photon flux (15-150 keV) in 0.008 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) = 1.94e-09
S(50-100 keV) = 1.34e-09
T90 vs. Hardness ratio plot
T90 = 0.00800001621246338 sec.
Hardness ratio (energy fluence ratio) = 0.690722
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.4565
Count Ratio (50-100 keV) / (15-25 keV) = 0.353597
Mask shadow pattern
IMX = -4.241333051786652E-01, IMY = 3.854952354326792E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
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:
-157.067400 -55.739200
-54.168000 -6.168000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9830 -15.6494 0.5 36.3 86.9 10.6512 22.1 0.6 Sco X-1
254.4343 35.1646 16.8 46.9 167.4 0.3606 0.7 10.7 Her X-1
255.9170 -37.7991 5.6 39.7 47.5 0.8488 2.1 4.3 4U 1700-377
256.3468 -36.4774 5.9 38.5 48.5 0.7743 1.9 5.4 GX 349+2
262.9746 -24.8925 53.8 26.0 54.9 0.0505 0.2 9.0 GX 1+4
264.5714 -44.4042 8.3 41.8 33.7 0.5585 1.4 7.8 4U 1735-44
268.3277 -1.5466 13.2 12.5 122.1 -0.1672 -0.9 6.1 SW J1753.5-0127
270.2453 -25.2279 3.3 22.5 41.3 0.7544 3.6 9.2 GX 5-1
270.1009 -25.6325 0.0 22.9 41.1 -0.5330 -2.5 12.8 GRS 1758-258
274.0742 -13.9846 3.4 11.0 50.7 0.6324 3.4 5.1 GX 17+2
275.8735 -30.3773 27.2 25.8 25.6 0.0856 0.4 2.7 H1820-303
285.0311 -24.9583 198.9 20.5 4.5 0.0106 0.1 2.3 HT1900.1-2455
288.8320 10.8484 2.3 17.9 -135.2 0.9853 5.0 6.2 GRS 1915+105
299.5800 35.2183 1.0 44.0 -140.5 4.8549 12.1 1.1 Cyg X-1
263.1163 -33.8298 11.9 33.0 43.6 -0.3110 -1.0 6.3 GX 354-0
252.0050 -34.6621 2.8 39.6 54.5 1.9410 4.2 ------ UNKNOWN
254.7953 41.2634 2.4 51.8 172.3 3.0962 4.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.008000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8372 -15.7225 99.3 36.5 86.8 0.0003 0.1 9.6 Sco X-1
254.5160 35.4048 3.8 47.1 167.7 0.0117 3.0 4.7 Her X-1
255.9149 -37.8003 5.1 39.7 47.5 0.0079 2.3 4.3 4U 1700-377
256.5838 -36.3392 45.3 38.2 48.4 -0.0008 -0.3 8.8 GX 349+2
262.8904 -24.9049 0.0 26.1 55.0 -0.0019 -0.8 11.5 GX 1+4
264.5312 -44.3871 7.4 41.8 33.7 -0.0064 -1.6 9.8 4U 1735-44
268.3418 -1.4063 14.7 12.5 122.8 -0.0015 -0.8 3.2 SW J1753.5-0127
270.3112 -24.9872 24.9 22.2 41.4 0.0010 0.5 5.7 GX 5-1
270.3527 -25.8741 6.1 23.0 40.3 0.0040 1.9 8.3 GRS 1758-258
273.9002 -14.2176 0.0 11.2 50.7 0.0022 1.2 12.5 GX 17+2
276.0752 -30.3194 13.5 25.7 25.3 -0.0018 -0.9 8.3 H1820-303
284.9250 -25.0640 7.7 20.6 4.9 -0.0028 -1.5 10.5 HT1900.1-2455
288.8072 10.8399 38.5 17.9 -135.3 -0.0006 -0.3 6.4 GRS 1915+105
299.6310 35.1679 8.5 44.0 -140.4 0.0055 1.4 2.8 Cyg X-1
262.8949 -33.7030 16.4 33.0 44.0 -0.0019 -0.7 9.2 GX 354-0
273.0000 48.4056 2.6 53.7 -169.3 0.0224 4.4 ------ UNKNOWN
293.7178 21.8545 1.7 29.8 -137.7 0.0170 6.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
63.632610 259.632600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5127 35.4722 5.9 36.7 153.2 0.9405 2.0 8.2 Her X-1
268.3767 -1.4540 30.9 34.0 82.7 -0.1972 -0.4 0.5 SW J1753.5-0127
273.9775 -13.9133 172.3 40.7 62.9 -0.0585 -0.1 7.6 GX 17+2
284.9357 -24.9046 5.3 47.5 43.6 2.1751 2.2 5.5 HT1900.1-2455
288.8131 10.9234 1.8 11.9 56.9 1.5338 6.3 1.6 GRS 1915+105
299.5977 35.1955 0.4 14.3 -127.6 6.0827 25.9 0.5 Cyg X-1
308.1653 40.9177 2.1 22.6 -118.0 1.4289 5.5 3.3 Cyg X-3
326.0110 38.2210 8.1 32.1 -95.2 0.5907 1.4 9.7 Cyg X-2
248.0055 40.8140 2.7 42.8 159.8 2.3756 4.2 ------ UNKNOWN
249.9024 51.8422 3.0 45.1 175.5 1.9661 3.8 ------ UNKNOWN
322.1544 -4.9269 2.3 38.6 -16.7 1.5711 5.0 ------ UNKNOWN
257.9732 76.6534 3.1 57.6 -156.5 5.9364 3.8 ------ UNKNOWN
Plot creation:
Fri May 20 04:09:30 EDT 2016