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
279.8897 23.2387 0.0045 31.2930 49.2264 9.8681757 42.411 TRIG_00843122
Foreground time interval of the image:
-6.924 37.788 (delta_t = 44.712 [sec])
Background time interval of the image:
-41.267 -6.924 (delta_t = 34.343 [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 -6.924 sec. to 37.788 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.72735 ( -0.0523692 0.0525757 )
Norm@50keV : 1.39187E-02 ( -0.00038009 0.000379696 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.53 using 59 PHA bins.
# Reduced chi-squared = 1.290 for 57 degrees of freedom
# Null hypothesis probability = 6.934043e-02
Photon flux (15-150 keV) in 44.71 sec: 1.86666 ( -0.05596 0.05617 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.75114e-06 ( -1.61872e-07 1.62228e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -6.924 sec. to 37.788 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.53885 ( -0.212923 0.202384 )
Epeak [keV] : 126.544 ( -41.3033 -126.544 )
Norm@50keV : 1.71515E-02 ( -0.0033232 0.00444071 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.02 using 59 PHA bins.
# Reduced chi-squared = 1.268 for 56 degrees of freedom
# Null hypothesis probability = 8.514790e-02
Photon flux (15-150 keV) in 44.71 sec: 1.83846 ( -0.06301 0.06329 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.66243e-06 ( -1.8793e-07 1.87148e-07 ) ergs/cm2
Band function
Time interval is from -6.924 sec. to 37.788 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] : 14.0585 ( )
R^2/D10^2 : 0.239974 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 369.66 using 59 PHA bins.
# Reduced chi-squared = 6.4853 for 57 degrees of freedom
# Null hypothesis probability = 2.379497e-47
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.478e-07 2.468e-08
25- 50 1.672e-06 5.745e-08
50-150 2.181e-06 1.268e-07
15-150 4.301e-06 1.337e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 138.829 (-18.1825 18.913)
Norm : 7.58758 (-0.268012 0.328231)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.77 using 59 PHA bins.
# Reduced chi-squared = 1.312 for 57 degrees of freedom
# Null hypothesis probability = 5.728689e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.704e-07 5.030e-08
25- 50 1.598e-06 7.824e-08
50-150 3.072e-06 6.798e-07
15-150 5.540e-06 7.422e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.52238 (-0.672548 0.692924)
R1^2/D10^2 : 1.65891 (-0.428893 0.643747)
kT2 [keV] : 27.5584 (-2.98135 3.96863)
R2^2/D10^2 : 1.57485E-02 (-0.00602138 0.00843774)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.68 using 59 PHA bins.
# Reduced chi-squared = 1.376 for 55 degrees of freedom
# Null hypothesis probability = 3.362551e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.102e-07 6.885e-08
25- 50 1.656e-06 9.724e-08
50-150 3.130e-06 2.821e-07
15-150 5.595e-06 3.890e-07
Peak spectrum fit
Power-law model
Time interval is from 4.468 sec. to 5.468 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.55507 ( -0.0912262 0.0919415 )
Norm@50keV : 6.09414E-02 ( -0.00317631 0.00316174 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.38 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 57 degrees of freedom
# Null hypothesis probability = 1.258574e-01
Photon flux (15-150 keV) in 1 sec: 7.72642 ( -0.40683 0.4077 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.73377e-07 ( -3.21867e-08 3.23264e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 4.468 sec. to 5.468 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.46674 ( -0.33411 0.170602 )
Epeak [keV] : 311.824 ( -311.824 -311.824 )
Norm@50keV : 6.73790E-02 ( -0.00930941 0.0300083 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.15 using 59 PHA bins.
# Reduced chi-squared = 1.235 for 56 degrees of freedom
# Null hypothesis probability = 1.114549e-01
Photon flux (15-150 keV) in 1 sec: 7.69197 ( -0.42397 0.42433 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.70033e-07 ( -3.44584e-08 3.38461e-08 ) ergs/cm2
Band function
Time interval is from 4.468 sec. to 5.468 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] : 14.6154 ( )
R^2/D10^2 : 0.920583 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 183.88 using 59 PHA bins.
# Reduced chi-squared = 3.2260 for 57 degrees of freedom
# Null hypothesis probability = 2.881710e-15
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.133e-08 4.340e-09
25- 50 1.603e-07 1.200e-08
50-150 2.303e-07 2.465e-08
15-150 4.319e-07 2.640e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-39.6452 -200)
Norm : 31.3421 (-1.58777 1.58777)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.47 using 59 PHA bins.
# Reduced chi-squared = 1.236 for 57 degrees of freedom
# Null hypothesis probability = 1.083654e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.815e-08 4.305e-09
25- 50 1.503e-07 8.300e-09
50-150 3.297e-07 1.955e-08
15-150 5.582e-07 3.525e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.30703 (-0.905308 0.970696)
R1^2/D10^2 : 7.54010 (-2.62543 4.49479)
kT2 [keV] : 30.1810 (-4.41655 6.42369)
R2^2/D10^2 : 5.86491E-02 (-0.0276766 0.0432583)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.62 using 59 PHA bins.
# Reduced chi-squared = 1.157 for 55 degrees of freedom
# Null hypothesis probability = 1.990295e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.580e-08 1.210e-08
25- 50 1.518e-07 1.905e-08
50-150 3.499e-07 7.755e-08
15-150 5.775e-07 9.465e-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: 1.72735 ( -0.0523692 0.0525757 )
Norm@50keV : 1.39187E-02 ( -0.00038009 0.000379696 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.53 using 59 PHA bins.
# Reduced chi-squared = 1.290 for 57 degrees of freedom
# Null hypothesis probability = 6.934043e-02
Photon flux (15-150 keV) in 44.71 sec: 1.86657 ( -0.0559547 0.056164 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.75029e-06 ( -1.61932e-07 1.622e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.53883 ( -0.212921 0.202386 )
Epeak [keV] : 126.536 ( -41.3138 -126.544 )
Norm@50keV : 1.71519E-02 ( -0.0033232 0.00444071 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.02 using 59 PHA bins.
# Reduced chi-squared = 1.268 for 56 degrees of freedom
# Null hypothesis probability = 8.514790e-02
Photon flux (15-150 keV) in 44.71 sec: 1.83813 ( -0.06297 0.06326 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.66431e-06 ( -1.8805e-07 1.87201e-07 ) 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) = 1.57e-06
S(50-100 keV) = 1.90e-06
T90 vs. Hardness ratio plot
T90 = 22.9479999542236 sec.
Hardness ratio (energy fluence ratio) = 1.21019
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.28228
Count Ratio (50-100 keV) / (15-25 keV) = 0.828446
Mask shadow pattern
IMX = 3.969636863810926E-01, IMY = -4.603158957568526E-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:
-41.267400 -6.924000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2615 35.4197 4.2 11.8 99.9 -0.1868 -2.8 10.7 Her X-1
288.7651 11.0562 9.0 46.1 48.3 0.3819 1.3 6.9 GRS 1915+105
299.5425 35.2429 6.8 35.2 11.3 0.1503 1.7 3.4 Cyg X-1
308.0689 40.9620 4.7 38.0 -2.7 0.2316 2.4 2.0 Cyg X-3
326.2152 38.3768 2.6 51.3 -9.9 0.6432 4.4 3.9 Cyg X-2
276.8615 18.7872 2.2 33.7 58.0 0.6277 5.3 ------ UNKNOWN
218.3557 24.4401 2.5 36.7 162.5 0.4737 4.6 ------ UNKNOWN
234.8760 44.2814 2.6 14.1 -176.8 0.2773 4.4 ------ UNKNOWN
329.9458 47.7405 2.3 48.7 -22.1 0.6555 5.0 ------ UNKNOWN
337.8955 37.2996 2.1 59.4 -15.5 2.2743 5.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-6.924000 37.788000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2905 35.2609 5.2 12.0 99.8 0.2840 2.2 9.5 Her X-1
288.8375 10.8141 4.4 46.4 48.4 1.8040 2.6 8.2 GRS 1915+105
299.6966 35.1881 14.1 35.3 11.2 0.1514 0.8 5.3 Cyg X-1
308.1527 41.0130 8.6 38.1 -2.8 -0.2586 -1.3 4.1 Cyg X-3
326.1837 38.4076 5.1 51.3 -9.9 -0.6973 -2.3 5.2 Cyg X-2
279.8897 23.2387 0.3 31.3 49.2 9.8679 42.4 ------ UNKNOWN
173.1770 55.6115 2.5 48.6 -130.3 2.6227 4.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
250.732600 962.849500
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2801 35.4269 11.1 25.3 -159.0 -0.6541 -1.0 10.1 Her X-1
268.3777 -1.4405 43.1 27.2 102.5 0.2443 0.3 0.9 SW J1753.5-0127
273.8697 -14.0758 5.6 37.8 86.1 4.0280 2.1 8.3 GX 17+2
288.7874 10.9277 1.0 15.0 40.6 6.7600 11.8 1.2 GRS 1915+105
299.5682 35.1795 1.5 20.8 -52.7 4.9468 7.5 1.7 Cyg X-1
308.0835 40.9665 2.2 29.5 -57.0 4.7389 5.2 1.5 Cyg X-3
326.0490 38.4188 14.9 41.9 -45.7 -0.9646 -0.8 8.2 Cyg X-2
303.5544 -15.9586 2.6 45.6 43.9 8.8577 4.5 ------ UNKNOWN
275.0925 7.1749 0.2 16.8 93.3 30.1602 48.7 ------ UNKNOWN
219.2680 18.2631 3.6 56.5 173.7 10.7371 3.2 ------ UNKNOWN
288.6588 12.5322 2.6 13.6 37.3 2.4309 4.5 ------ UNKNOWN
326.7207 16.9660 2.6 44.2 -14.2 4.0432 4.4 ------ UNKNOWN
333.9737 13.3059 4.0 52.0 -12.4 4.2459 2.9 ------ UNKNOWN
Plot creation:
Fri Jul 6 14:36:05 EDT 2018