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
323.7779 -24.4054 0.0174 39.6492 -62.7566 1.7659817 11.148 TRIG_00744791
Foreground time interval of the image:
-2.784 17.152 (delta_t = 19.936 [sec])
Background time interval of the image:
-239.280 -2.784 (delta_t = 236.496 [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 8.192000
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 8.192000
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 8.192000
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 -2.784 sec. to 17.152 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.86877 ( -0.201759 0.210921 )
Norm@50keV : 5.85021E-03 ( -0.000813261 0.000799855 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.89 using 59 PHA bins.
# Reduced chi-squared = 1.209 for 57 degrees of freedom
# Null hypothesis probability = 1.344039e-01
Photon flux (15-150 keV) in 19.94 sec: 0.828698 ( -0.102284 0.102405 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.07262e-06 ( -1.47164e-07 1.49111e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -2.784 sec. to 17.152 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.355513 ( -1.35509 1.04264 )
Epeak [keV] : 47.9571 ( -8.32925 16.3744 )
Norm@50keV : 4.01682E-02 ( -0.0401692 0.186362 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.20 using 59 PHA bins.
# Reduced chi-squared = 1.111 for 56 degrees of freedom
# Null hypothesis probability = 2.649671e-01
Photon flux (15-150 keV) in 19.94 sec: 0.789239 ( -0.105778 0.105911 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.66619e-07 ( -1.49764e-07 1.60384e-07 ) ergs/cm2
Band function
Time interval is from -2.784 sec. to 17.152 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] : 11.4898 (-1.35961 1.55095)
R^2/D10^2 : 0.243733 (-0.0935965 0.148677)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.06 using 59 PHA bins.
# Reduced chi-squared = 1.177 for 57 degrees of freedom
# Null hypothesis probability = 1.701044e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.350e-07 2.927e-08
25- 50 4.034e-07 6.620e-08
50-150 3.107e-07 8.385e-08
15-150 8.491e-07 1.287e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 82.5182 (-24.8433 46.0694)
Norm : 3.91371 (-0.65006 0.790861)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.38 using 59 PHA bins.
# Reduced chi-squared = 1.129 for 57 degrees of freedom
# Null hypothesis probability = 2.341587e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.029e-07 3.563e-08
25- 50 3.364e-07 4.427e-08
50-150 4.848e-07 2.349e-07
15-150 1.024e-06 2.167e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.97818 (-5.2329 -6.05198)
R1^2/D10^2 : 1.18264 (-0.896221 -1.11391)
kT2 [keV] : 15.0353 (-3.83425 -15.2689)
R2^2/D10^2 : 6.79028E-02 (-0.0615111 0.214411)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.70 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 55 degrees of freedom
# Null hypothesis probability = 2.221041e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.755e-07 9.383e-08
25- 50 3.653e-07 1.853e-07
50-150 4.028e-07 2.338e-07
15-150 9.435e-07 4.790e-07
Peak spectrum fit
Power-law model
Time interval is from 0.420 sec. to 1.420 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.72458 ( -0.50131 0.514016 )
Norm@50keV : 9.32168E-03 ( -0.00313968 0.00310209 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.91 using 59 PHA bins.
# Reduced chi-squared = 1.209 for 57 degrees of freedom
# Null hypothesis probability = 1.339954e-01
Photon flux (15-150 keV) in 1 sec: 1.24879 ( -0.418702 0.42231 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.61747e-08 ( -2.93339e-08 2.97698e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.420 sec. to 1.420 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.24437 ( -6.20315 2.94186 )
Epeak [keV] : 50.2748 ( -12.5389 59.8914 )
Norm@50keV : 0.354045 ( -0.466591 225.446 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.64 using 59 PHA bins.
# Reduced chi-squared = 1.172 for 56 degrees of freedom
# Null hypothesis probability = 1.773120e-01
Photon flux (15-150 keV) in 1 sec: 1.15371 ( -0.435607 0.43604 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.51623e-08 ( -2.57085e-08 2.93097e-08 ) ergs/cm2
Band function
Time interval is from 0.420 sec. to 1.420 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] : 12.8729 (-3.095 4.04822)
R^2/D10^2 : 0.267530 (-0.26753 0.477773)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.59 using 59 PHA bins.
# Reduced chi-squared = 1.151 for 57 degrees of freedom
# Null hypothesis probability = 2.036418e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.403e-09 5.950e-09
25- 50 3.204e-08 2.007e-08
50-150 3.337e-08 2.306e-08
15-150 7.482e-08 4.011e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 107.379 (-61.5446 -106.087)
Norm : 5.60732 (-2.07847 3.09771)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.87 using 59 PHA bins.
# Reduced chi-squared = 1.191 for 57 degrees of freedom
# Null hypothesis probability = 1.535813e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.465e-08 9.210e-09
25- 50 2.569e-08 1.569e-08
50-150 4.329e-08 3.242e-08
15-150 8.363e-08 5.765e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 196.992 (-197.553 -197.553)
R1^2/D10^2 : 4.76676E-05 (-4.72287e-05 0.693314)
kT2 [keV] : 12.0096 (-12.0088 4.50318)
R2^2/D10^2 : 0.327498 (-0.328021 1.70148)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.57 using 59 PHA bins.
#Fit statistic : Chi-Squared = 65.22 using 59 PHA bins.
# Reduced chi-squared = 1.192 for 55 degrees of freedom
# Reduced chi-squared = 1.186 for 55 degrees of freedom
# Null hypothesis probability = 1.557874e-01
# Null hypothesis probability = 1.628299e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.024e-08 7.695e-09
25- 50 3.187e-08 2.377e-08
50-150 3.366e-08 2.471e-08
15-150 7.577e-08 5.115e-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: 1.86877 ( -0.201759 0.210921 )
Norm@50keV : 5.85021E-03 ( -0.000813261 0.000799855 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.89 using 59 PHA bins.
# Reduced chi-squared = 1.209 for 57 degrees of freedom
# Null hypothesis probability = 1.344039e-01
Photon flux (15-150 keV) in 19.94 sec: 0.828648 ( -0.102274 0.102396 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.07244e-06 ( -1.47114e-07 1.49174e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.359644 ( -1.35617 1.04163 )
Epeak [keV] : 47.9715 ( -8.33153 16.3384 )
Norm@50keV : 3.99541E-02 ( -0.0401654 0.186362 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.20 using 59 PHA bins.
# Reduced chi-squared = 1.111 for 56 degrees of freedom
# Null hypothesis probability = 2.649660e-01
Photon flux (15-150 keV) in 19.94 sec: 0.789132 ( -0.105745 0.105876 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.66879e-07 ( -1.49845e-07 1.60467e-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) = 3.09e-07
S(50-100 keV) = 3.39e-07
T90 vs. Hardness ratio plot
T90 = 17.6160000562668 sec.
Hardness ratio (energy fluence ratio) = 1.09709
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.56373
Count Ratio (50-100 keV) / (15-25 keV) = 0.719744
Mask shadow pattern
IMX = 3.793650527095629E-01, IMY = 7.367904562794484E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
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:
-239.280000 -2.784000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9453 -15.5901 1.4 37.2 86.9 7.2556 8.5 3.6 Sco X-1
255.9994 -37.8163 2.6 34.4 45.0 2.0584 4.4 1.8 4U 1700-377
256.3684 -36.4808 5.6 33.4 46.6 0.9202 2.1 4.7 GX 349+2
262.9789 -24.7072 4.2 22.2 61.6 0.8574 2.8 2.8 GX 1+4
264.8119 -44.6037 7.3 34.9 28.3 0.6256 1.6 9.7 4U 1735-44
268.2183 -1.3215 6.7 19.2 132.9 -0.5134 -1.7 11.9 SW J1753.5-0127
270.3586 -25.0275 2.7 16.8 49.7 1.2083 4.2 5.1 GX 5-1
270.1337 -25.5950 0.0 17.4 48.7 0.7499 2.6 12.7 GRS 1758-258
273.9995 -14.0743 3.3 9.1 90.0 0.9031 3.5 2.3 GX 17+2
275.9186 -30.2912 23.8 18.2 26.0 -0.1360 -0.5 4.6 H1820-303
285.0794 -24.8352 74.2 11.5 -2.9 0.0464 0.2 5.6 HT1900.1-2455
288.7600 10.8935 1.6 24.9 -162.2 2.1128 7.2 3.9 GRS 1915+105
299.5922 35.1936 1.3 51.0 -157.8 7.3841 8.8 0.5 Cyg X-1
263.0886 -33.9159 5.6 27.5 43.5 0.7024 2.1 7.0 GX 354-0
259.9017 -25.0173 0.8 24.9 63.9 4.9948 15.1 ------ UNKNOWN
290.7376 39.9920 2.6 53.9 -167.9 4.3290 4.4 ------ UNKNOWN
325.4784 -46.5195 3.1 48.3 -33.1 2.3326 3.7 ------ UNKNOWN
329.3296 -38.6308 4.8 47.7 -44.4 2.9189 2.4 ------ UNKNOWN
324.7343 -15.5586 3.1 40.1 -76.6 4.6211 3.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-2.784000 17.152000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8201 -15.6816 8.6 37.3 86.7 -0.2580 -1.4 9.5 Sco X-1
255.8404 -37.9589 5.6 34.6 44.9 0.2170 2.1 9.8 4U 1700-377
256.5183 -36.4292 7.1 33.2 46.5 0.1632 1.6 4.0 GX 349+2
263.1719 -24.8843 7.5 22.2 61.0 0.1103 1.5 12.2 GX 1+4
264.8229 -44.5278 5.4 34.9 28.4 -0.1784 -2.1 5.8 4U 1735-44
268.5161 -1.5169 8.7 18.9 133.0 -0.0835 -1.3 9.7 SW J1753.5-0127
270.2094 -25.2138 10.8 17.1 49.5 -0.0647 -1.1 9.0 GX 5-1
270.4676 -25.7919 6.0 17.3 47.5 0.1221 2.0 9.4 GRS 1758-258
274.1567 -13.9611 8.4 8.9 90.6 0.0822 1.4 9.9 GX 17+2
275.7684 -30.5181 0.0 18.4 26.0 0.0631 1.0 12.2 H1820-303
284.9563 -25.0300 5.9 11.7 -2.3 0.1108 1.9 7.9 HT1900.1-2455
288.9250 10.8502 5.4 24.9 -161.8 -0.1286 -2.2 9.4 GRS 1915+105
299.5694 35.2017 4.1 51.0 -157.8 0.4749 2.8 1.0 Cyg X-1
263.1595 -33.8853 3.7 27.4 43.5 -0.2290 -3.1 9.0 GX 354-0
294.5601 -28.1171 1.9 18.0 -28.7 0.3375 6.0 ------ UNKNOWN
323.7779 -24.4054 1.0 39.6 -62.8 1.7657 11.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
108.220600 962.854800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
285.1984 -24.9076 5.6 34.9 107.4 -2.6856 -2.1 8.9 HT1900.1-2455
288.7431 10.9437 4.3 49.2 158.3 5.4093 2.7 3.3 GRS 1915+105
26.3386 -58.6555 3.5 55.2 -7.8 5.8767 3.3 ------ UNKNOWN
11.9362 -19.3067 3.7 44.8 -60.2 10.6092 3.1 ------ UNKNOWN
Plot creation:
Tue Apr 25 19:02:02 EDT 2017