Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
48.8950 -87.4763 0.0048 35.3427 -147.1642 2.9822395 39.539 TRIG_00845443
Foreground time interval of the image:
-0.356 11.909 (delta_t = 12.265 [sec])
Background time interval of the image:
-90.891 -0.356 (delta_t = 90.535 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) 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.
- 4) 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.
- 5) 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)
Quad-rate summed light curves (from T0-300s to T0+1000s)
Spectral Evolution
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.
Time averaged spectrum fit using the average DRM
Power-law model
Time interval is from -0.356 sec. to 30.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.06118 ( -0.0972639 0.0993133 )
Norm@50keV : 6.22797E-03 ( -0.000363508 0.000359704 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 34.42 using 59 PHA bins.
# Reduced chi-squared = 0.6038 for 57 degrees of freedom
# Null hypothesis probability = 9.922386e-01
Photon flux (15-150 keV) in 30.38 sec: 0.961543 ( -0.050186 0.050317 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.75222e-06 ( -9.49281e-08 9.55117e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.356 sec. to 30.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.82823 ( -0.397392 0.363964 )
Epeak [keV] : 33.1976 ( -26.7939 -33.1986 )
Norm@50keV : 8.32941E-03 ( -0.00292662 0.00522728 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.23 using 59 PHA bins.
# Reduced chi-squared = 0.5935 for 56 degrees of freedom
# Null hypothesis probability = 9.933358e-01
Photon flux (15-150 keV) in 30.38 sec: 0.948026 ( -0.054283 0.054334 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from -0.356 sec. to 30.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 10.5059 ( )
R^2/D10^2 : 0.346348 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 131.26 using 59 PHA bins.
# Reduced chi-squared = 2.3028 for 57 degrees of freedom
# Null hypothesis probability = 8.654272e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.401e-07 2.196e-08
25- 50 6.390e-07 3.661e-08
50-150 3.841e-07 4.663e-08
15-150 1.263e-06 7.109e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 66.4414 (-9.68767 12.3492)
Norm : 4.70176 (-0.416748 0.467768)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.56 using 59 PHA bins.
# Reduced chi-squared = 0.6590 for 57 degrees of freedom
# Null hypothesis probability = 9.781862e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.643e-07 2.810e-08
25- 50 5.713e-07 2.916e-08
50-150 7.054e-07 8.203e-08
15-150 1.641e-06 9.068e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.83770 (-0.869298 0.926647)
R1^2/D10^2 : 2.52845 (-1.06176 2.2298)
kT2 [keV] : 20.4800 (-3.29235 4.8496)
R2^2/D10^2 : 1.89382E-02 (-0.0106906 0.0199555)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 35.93 using 59 PHA bins.
# Reduced chi-squared = 0.6533 for 55 degrees of freedom
# Null hypothesis probability = 9.782430e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.801e-07 5.888e-08
25- 50 5.467e-07 8.036e-08
50-150 7.525e-07 1.981e-07
15-150 1.679e-06 2.874e-07
Peak spectrum fit
Power-law model
Time interval is from 3.648 sec. to 4.648 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.02022 ( -0.10698 0.109084 )
Norm@50keV : 4.30985E-02 ( -0.00278906 0.00275684 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.97 using 59 PHA bins.
# Reduced chi-squared = 0.8415 for 57 degrees of freedom
# Null hypothesis probability = 7.973042e-01
Photon flux (15-150 keV) in 1 sec: 6.52614 ( -0.38361 0.38478 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.97979e-07 ( -2.43075e-08 2.44464e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 3.648 sec. to 4.648 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.06984 ( -0.387003 0.176788 )
Epeak [keV] : 63.9381 ( )
Norm@50keV : 4.05020E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.91 using 59 PHA bins.
# Reduced chi-squared = 0.8556 for 56 degrees of freedom
# Null hypothesis probability = 7.704891e-01
Photon flux (15-150 keV) in 1 sec: 6.47945 ( -0.33621 0.40842 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 3.648 sec. to 4.648 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 10.1873 ( )
R^2/D10^2 : 2.67303 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 150.42 using 59 PHA bins.
# Reduced chi-squared = 2.6390 for 57 degrees of freedom
# Null hypothesis probability = 2.333085e-10
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.684e-08 6.155e-09
25- 50 1.450e-07 9.800e-09
50-150 7.986e-08 1.166e-08
15-150 2.817e-07 1.975e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 71.8440 (-12.1964 16.3557)
Norm : 31.0391 (-3.04915 3.46752)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.18 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 57 degrees of freedom
# Null hypothesis probability = 4.682374e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.984e-08 6.955e-09
25- 50 1.279e-07 7.550e-09
50-150 1.675e-07 2.115e-08
15-150 3.752e-07 2.320e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.22089 (-0.742673 0.785136)
R1^2/D10^2 : 14.7180 (-5.39592 9.5629)
kT2 [keV] : 25.8903 (-4.58327 6.86141)
R2^2/D10^2 : 5.61132E-02 (-0.031287 0.0598879)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.90 using 59 PHA bins.
# Reduced chi-squared = 0.8165 for 55 degrees of freedom
# Null hypothesis probability = 8.324845e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.598e-08 1.352e-08
25- 50 1.228e-07 1.624e-08
50-150 1.920e-07 5.666e-08
15-150 4.008e-07 6.765e-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: 2.02120 ( -0.0804735 0.0816964 )
Norm@50keV : 1.40757E-02 ( -0.000642619 0.000638046 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.17 using 59 PHA bins.
# Reduced chi-squared = 0.7222 for 57 degrees of freedom
# Null hypothesis probability = 9.434013e-01
Photon flux (15-150 keV) in 12.26 sec: 2.13220 ( -0.0944253 0.0947837 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59333e-06 ( -6.91614e-08 6.93861e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.84816 ( -0.315572 0.295319 )
Epeak [keV] : 41.6005 ( -35.6884 -41.6004 )
Norm@50keV : 1.73142E-02 ( -0.00462811 0.00774706 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.18 using 59 PHA bins.
# Reduced chi-squared = 0.7175 for 56 degrees of freedom
# Null hypothesis probability = 9.452300e-01
Photon flux (15-150 keV) in 12.26 sec: 2.10589 ( -0.10361 0.10398 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.57019e-06 ( -8.00823e-08 7.96287e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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) = 5.38e-07
S(50-100 keV) = 5.13e-07
T90 vs. Hardness ratio plot
T90 = 18.9599999189377 sec.
Hardness ratio (energy fluence ratio) = 0.953532
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.986406
Count Ratio (50-100 keV) / (15-25 keV) = 0.528779
Mask shadow pattern
IMX = -5.958556712528323E-01, IMY = 3.845295785922921E-01
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:
-90.891410 -0.356000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.0592 -60.5354 5.9 31.8 -90.0 -0.4141 -1.9 9.2 Cen X-3
186.6442 -62.7772 0.9 23.7 -90.1 1.9345 12.5 0.5 GX 301-2
244.9793 -15.6130 1.6 42.4 49.3 2.5780 7.1 1.6 Sco X-1
255.9852 -37.8307 16.5 24.2 79.9 -0.1130 -0.7 0.8 4U 1700-377
256.4705 -36.3179 9.0 25.8 78.9 0.2233 1.3 6.5 GX 349+2
262.9466 -24.6381 6.4 38.7 78.3 0.8532 1.8 7.3 GX 1+4
264.6496 -44.5851 3.4 22.9 103.2 0.5260 3.4 9.0 4U 1735-44
276.0316 -30.2984 3.5 39.6 98.8 -1.7658 -3.2 6.9 H1820-303
263.0186 -33.9754 8.7 30.5 86.2 0.2954 1.3 8.6 GX 354-0
264.3492 -45.0900 2.8 22.4 103.8 0.6496 4.2 ------ UNKNOWN
226.5433 -26.1163 2.4 31.5 20.7 0.7216 4.7 ------ UNKNOWN
202.7210 -13.3117 3.0 49.8 -7.9 1.0202 3.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.356000 11.908600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.6241 -60.5473 6.7 31.6 -89.8 -0.1756 -1.7 10.2 Cen X-3
186.9270 -62.8057 9.7 23.5 -90.2 -0.0814 -1.2 7.7 GX 301-2
244.8457 -15.7062 5.7 42.3 49.2 -0.3039 -2.0 8.7 Sco X-1
255.7696 -37.8973 22.9 24.1 79.6 0.0372 0.5 10.8 4U 1700-377
256.4262 -36.2252 0.0 25.8 78.7 -0.1597 -2.0 11.9 GX 349+2
262.9747 -24.5977 5.3 38.7 78.4 -0.3765 -2.2 9.1 GX 1+4
264.7566 -44.4718 58.1 23.0 103.1 0.0122 0.2 1.4 4U 1735-44
275.7944 -30.3467 1401.0 39.5 98.6 0.0015 0.0 6.9 H1820-303
262.7550 -33.8821 0.0 30.4 85.8 -0.0098 -0.1 12.0 GX 354-0
335.5459 -59.5804 2.7 48.0 171.4 0.5497 4.2 ------ UNKNOWN
48.8951 -87.4763 0.3 35.3 -147.2 2.9821 39.5 ------ UNKNOWN
183.3438 -17.7436 2.1 54.2 -31.6 1.1981 5.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
67.908600 962.070500
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1913 -60.5893 16.2 30.8 -14.6 -0.5092 -0.7 4.2 Cen X-3
186.6624 -62.7779 0.3 29.1 1.3 25.4207 33.4 0.5 GX 301-2
240.3058 -48.5447 2.9 43.9 51.4 9.1254 4.0 ------ UNKNOWN
214.1833 -39.7323 2.8 52.7 26.3 12.3299 4.2 ------ UNKNOWN
344.2470 -38.7948 3.9 50.2 154.0 8.5927 2.9 ------ UNKNOWN
242.8329 -69.8123 3.3 22.6 53.0 2.7840 3.5 ------ UNKNOWN
215.2509 -62.6941 1.8 29.7 27.9 5.2878 6.4 ------ UNKNOWN
3.4095 -31.4168 2.8 56.8 173.9 18.4340 4.1 ------ UNKNOWN
121.7731 -45.7535 2.9 43.6 -64.1 15.8178 4.0 ------ UNKNOWN
58.9209 -39.5578 3.1 48.0 -129.1 15.5172 3.8 ------ UNKNOWN
55.1069 -37.7590 3.1 49.8 -133.0 16.2892 3.8 ------ UNKNOWN
Plot creation:
Mon Aug 6 22:38:12 EDT 2018