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
282.0823 -2.4446 0.0311 3.0 -142.1 1.4774 6.2 TRIG_00745966
------------------------------------------
Foreground time interval of the image:
-14.499 203.101 (delta_t = 217.600 [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
-66.884000 -56.898600
-56.000000 658.430000
660.000000 886.340000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.22626 ( -0.171852 0.181412 )
Norm@50keV : 3.26352E-04 ( -4.2464e-05 4.20027e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.56 using 59 PHA bins.
# Reduced chi-squared = 0.9923 for 57 degrees of freedom
# Null hypothesis probability = 4.915357e-01
Photon flux (15-150 keV) in 950.8 sec: 5.47855E-02 ( -0.00500933 0.00500949 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.92862e-06 ( -3.24041e-07 3.32252e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-66.884000 -56.898600
-56.000000 658.430000
660.000000 886.340000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.183992 ( -1.3063 1.05213 )
Epeak [keV] : 32.2861 ( -5.96675 4.55673 )
Norm@50keV : 6.09581E-03 ( -0.0061533 0.0350432 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.42 using 59 PHA bins.
# Reduced chi-squared = 0.7754 for 56 degrees of freedom
# Null hypothesis probability = 8.900594e-01
Photon flux (15-150 keV) in 950.8 sec: 5.16860E-02 ( -0.0050795 0.0051107 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.46971e-06 ( -2.92514e-07 3.32856e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-66.884000 -56.898600
-56.000000 658.430000
660.000000 886.340000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -3.48524E-02 ( -1.13653 1.76099 )
beta : -3.61754 ( 3.67659 0.992614 )
Epeak [keV] : 31.8841 ( -4.81941 4.69511 )
Norm@50keV : 7.77140E-03 ( -0.00495301 0.119547 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.26 using 59 PHA bins.
# Reduced chi-squared = 0.7866 for 55 degrees of freedom
# Null hypothesis probability = 8.740373e-01
Photon flux (15-150 keV) in 950.8 sec: 6.15657E-02 ( 6.93843 -0.0130753 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.82371e-06 ( -2.81706e-06 -6.63307e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.54619 (-0.748988 0.819218)
R^2/D10^2 : 4.76524E-02 (-0.0146793 0.0212109)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.21 using 59 PHA bins.
# Reduced chi-squared = 0.8457 for 57 degrees of freedom
# Null hypothesis probability = 7.901187e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.257e-07 8.676e-08
25- 50 1.224e-06 1.341e-07
50-150 3.977e-07 1.134e-07
15-150 2.248e-06 2.558e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 42.6107 (-8.55381 12.0958)
Norm : 0.343982 (-0.0540912 0.0653466)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.68 using 59 PHA bins.
# Reduced chi-squared = 0.8189 for 57 degrees of freedom
# Null hypothesis probability = 8.337182e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.664e-07 9.313e-08
25- 50 1.035e-06 1.114e-07
50-150 8.573e-07 2.321e-07
15-150 2.659e-06 3.689e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.94357 (-2.68699 -3.94326)
R1^2/D10^2 : 0.369536 (-0.324185 799.065)
kT2 [keV] : 10.0671 (-1.66243 -10.0668)
R2^2/D10^2 : 2.10001E-02 (-0.0209923 0.0282863)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.47 using 59 PHA bins.
# Reduced chi-squared = 0.7904 for 55 degrees of freedom
# Null hypothesis probability = 8.691010e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.112e-07 3.680e-07
25- 50 1.140e-06 5.942e-07
50-150 5.528e-07 3.358e-07
15-150 2.404e-06 1.223e-06
Peak spectrum fit
Power-law model
Time interval is from 861.884 sec. to 862.884 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.09255 ( -0.765134 1.01232 )
Norm@50keV : 2.32704E-03 ( -0.00232704 0.00130585 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.22 using 59 PHA bins.
# Reduced chi-squared = 1.109 for 57 degrees of freedom
# Null hypothesis probability = 2.660783e-01
Photon flux (15-150 keV) in 1 sec: 0.364762 ( -0.145147 0.145272 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.16054e-08 ( -1.07095e-08 1.20992e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 861.884 sec. to 862.884 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.91825 ( )
Epeak [keV] : 21.2777 ( )
Norm@50keV : 2.90858E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.26 using 59 PHA bins.
# Reduced chi-squared = 1.130 for 56 degrees of freedom
# Null hypothesis probability = 2.354040e-01
Photon flux (15-150 keV) in 1 sec: 0.364531 ( -0.144603 0.144021 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.15842e-08 ( -1.15683e-08 1.1904e-08 ) ergs/cm2
Band function
Time interval is from 861.884 sec. to 862.884 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.88600 ( -4.886 -4.886 )
beta : -2.25308 ( -2.44891 0.887415 )
Epeak [keV] : 20.8230 ( -20.823 74.606 )
Norm@50keV : 1155.59 ( -456.078 8.83003e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.11 using 59 PHA bins.
# Reduced chi-squared = 1.147 for 55 degrees of freedom
# Null hypothesis probability = 2.114864e-01
Photon flux (15-150 keV) in 1 sec: 6.15657E-02 ( 6.93843 -0.0130753 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.96983e-09 ( -2.96283e-09 -6.9763e-10 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.68288 (-3.09899 5.143)
R^2/D10^2 : 0.468452 (-0.467919 3.35271)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.54 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 57 degrees of freedom
# Null hypothesis probability = 2.299750e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.844e-09 3.054e-09
25- 50 7.893e-09 5.305e-09
50-150 1.811e-09 1.430e-09
15-150 1.455e-08 9.730e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 50.1061 (-50.097 -50.097)
Norm : 2.06284 (-1.08048 3.36456)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.47 using 59 PHA bins.
# Reduced chi-squared = 1.113 for 57 degrees of freedom
# Null hypothesis probability = 2.590928e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.046e-09 3.184e-09
25- 50 7.253e-09 4.703e-09
50-150 7.056e-09 6.105e-09
15-150 1.936e-08 1.311e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.50697 (-6.44149 4.48644)
R1^2/D10^2 : 0.829405 (-0.82507 -0.82507)
kT2 [keV] : 62.6383 (-63.2796 -63.2796)
R2^2/D10^2 : 2.74234E-04 (-0.000273727 0.0907253)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.81 using 59 PHA bins.
#Fit statistic : Chi-Squared = 62.80 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 55 degrees of freedom
# Reduced chi-squared = 1.142 for 55 degrees of freedom
# Null hypothesis probability = 2.192236e-01
# Null hypothesis probability = 2.195299e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.306e-09 3.172e-09
25- 50 6.869e-09 4.434e-09
50-150 1.188e-08 6.165e-09
15-150 2.405e-08 1.140e-08
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: 2.16241 ( -0.303185 0.336222 )
Norm@50keV : 3.47797E-04 ( -8.44451e-05 8.29859e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.04 using 59 PHA bins.
# Reduced chi-squared = 1.071 for 57 degrees of freedom
# Null hypothesis probability = 3.328004e-01
Photon flux (15-150 keV) in 217.6 sec: 5.64648E-02 ( -0.00964858 0.00965094 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.07988e-07 ( -1.48542e-07 1.55752e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.168378 ( -2.70399 1.66304 )
Epeak [keV] : 33.2608 ( -16.0776 10.065 )
Norm@50keV : 6.14191E-03 ( -0.00692166 0.379519 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.37 using 59 PHA bins.
# Reduced chi-squared = 1.007 for 56 degrees of freedom
# Null hypothesis probability = 4.611732e-01
Photon flux (15-150 keV) in 217.6 sec: 5.41301E-02 ( -0.0095349 0.0096178 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.9867e-07 ( -1.28667e-07 1.57529e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.399959 ( -1.71097 -0.423498 )
beta : -3.39573 ( 3.36511 1.14967 )
Epeak [keV] : 32.0386 ( -9.33407 14.1133 )
Norm@50keV : 1.56035E-02 ( -0.0179036 18.2044 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.38 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 55 degrees of freedom
# Null hypothesis probability = 4.232098e-01
Photon flux (15-150 keV) in 217.6 sec: 6.15657E-02 ( 6.93843 -0.0130753 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.46235e-07 ( -6.44712e-07 -1.51804e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 9.33e-07
S(50-100 keV) = 7.97e-07
T90 vs. Hardness ratio plot
T90 = 595.867999970913 sec.
Hardness ratio (energy fluence ratio) = 0.854234
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.07681
Count Ratio (50-100 keV) / (15-25 keV) = 0.289341
Mask shadow pattern
IMX = -4.163683619524744E-02, IMY = 3.240240085307980E-02
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:
-14.499400 203.100640
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9888 -15.6346 1.1 36.4 73.6 6.8887 10.9 0.6 Sco X-1
254.5964 35.3238 12.2 47.0 154.4 0.7937 0.9 6.9 Her X-1
256.0346 -37.8984 3.5 39.7 34.0 1.5096 3.3 4.0 4U 1700-377
256.5595 -36.3430 180.3 38.3 35.1 0.0274 0.1 7.7 GX 349+2
263.0021 -24.7750 2.3 25.9 41.8 1.5102 5.1 1.8 GX 1+4
264.7201 -44.3000 37.6 41.7 20.3 -0.1202 -0.3 9.1 4U 1735-44
268.2235 -1.5813 45.3 12.6 108.5 -0.0635 -0.3 11.6 SW J1753.5-0127
270.4481 -25.2294 0.0 22.4 27.6 -0.1043 -0.4 12.7 GX 5-1
270.1521 -25.8587 14.4 23.1 27.5 -0.1954 -0.8 10.7 GRS 1758-258
273.9546 -14.0409 3.3 11.1 37.8 0.8816 3.5 3.0 GX 17+2
276.0731 -30.2286 5.8 25.6 12.1 0.4535 2.0 11.3 H1820-303
284.9768 -25.0063 4.7 20.6 -8.5 0.6342 2.5 6.1 HT1900.1-2455
288.7826 10.9440 1.9 18.0 -148.8 1.5844 6.2 0.9 GRS 1915+105
299.6110 35.2040 1.0 44.0 -153.8 5.2723 11.9 1.0 Cyg X-1
308.2791 40.8152 8.4 52.4 -150.0 -1.2783 -1.4 11.3 Cyg X-3
263.1511 -33.8957 16.8 33.1 30.2 0.2314 0.7 8.9 GX 354-0
259.9035 -25.0330 0.8 28.1 45.7 4.6112 14.7 ------ UNKNOWN
282.0824 -2.4446 1.9 3.0 -142.1 1.4770 6.2 ------ UNKNOWN
302.3606 46.2743 2.9 54.8 -158.1 3.9092 4.0 ------ UNKNOWN
320.8447 -0.0479 2.8 40.7 -92.2 5.1316 4.0 ------ UNKNOWN
320.5842 4.0511 2.9 41.2 -98.5 4.7492 3.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
223.700580 658.430000
660.000000 821.200600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9728 -15.6345 1.2 38.8 74.5 17.5677 9.8 0.5 Sco X-1
254.5907 35.3996 10.0 45.7 155.1 2.0362 1.2 7.4 Her X-1
255.9412 -37.7887 2.4 42.7 37.6 5.4261 4.8 4.0 4U 1700-377
256.4683 -36.4147 3.9 41.4 38.4 3.1291 2.9 1.7 GX 349+2
262.9911 -24.7184 2.0 28.9 44.6 3.7892 5.7 1.9 GX 1+4
264.5629 -44.3306 2.7 44.6 24.5 4.1208 4.4 10.5 4U 1735-44
268.5018 -1.2904 0.0 13.6 101.3 -0.2329 -0.4 12.6 SW J1753.5-0127
270.2848 -25.1047 2.4 25.3 32.2 2.7203 4.7 1.5 GX 5-1
270.2235 -25.6707 6.3 25.9 31.7 1.0477 1.9 6.1 GRS 1758-258
273.9414 -14.0837 5.3 14.1 40.8 1.2182 2.2 4.7 GX 17+2
275.8872 -30.3660 4.4 28.5 17.9 1.4143 2.6 2.0 H1820-303
285.0399 -24.9213 320.1 22.7 -0.4 0.0199 0.0 0.2 HT1900.1-2455
288.8129 10.9418 1.4 15.0 -146.7 4.0363 8.0 0.9 GRS 1915+105
299.5827 35.2052 0.6 41.1 -151.3 14.6340 18.6 0.4 Cyg X-1
308.2693 40.9320 6.5 49.5 -147.3 2.3152 1.8 7.3 Cyg X-3
263.0518 -33.9085 3.2 36.1 34.0 2.8617 3.6 5.4 GX 354-0
259.9054 -25.0225 0.9 31.1 48.1 9.7615 13.1 ------ UNKNOWN
257.7647 26.0549 2.8 36.9 148.8 3.9743 4.2 ------ UNKNOWN
278.2004 18.0032 3.1 20.8 176.4 1.6766 3.8 ------ UNKNOWN
282.0175 -2.4420 1.6 0.0 115.4 3.3045 7.2 ------ UNKNOWN
321.9163 7.9165 3.1 41.1 -98.3 9.2461 3.7 ------ UNKNOWN
UNKNOWN
Plot creation:
Fri Apr 7 11:43:39 EDT 2017