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
265.6548 -26.6331 0.0128 19.1842 -2.0787 3.9701766 15.011 TRIG_00848932
Foreground time interval of the image:
-150.520 13.444 (delta_t = 163.964 [sec])
Background time interval of the image:
-239.944 -150.520 (delta_t = 89.424 [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 -150.520 sec. to 13.444 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.38805 ( -0.131492 0.130523 )
Norm@50keV : 1.43644E-03 ( -9.89996e-05 9.89009e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.03 using 59 PHA bins.
# Reduced chi-squared = 0.9304 for 57 degrees of freedom
# Null hypothesis probability = 6.246793e-01
Photon flux (15-150 keV) in 164 sec: 0.174467 ( -0.012614 0.012683 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.28221e-06 ( -1.73027e-07 1.74219e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -150.520 sec. to 13.444 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.38485 ( -0.230498 0.131319 )
Epeak [keV] : 9999.29 ( -9999.36 -9999.36 )
Norm@50keV : 1.44160E-03 ( -9.93206e-05 0.000468238 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.06 using 59 PHA bins.
# Reduced chi-squared = 0.9474 for 56 degrees of freedom
# Null hypothesis probability = 5.870245e-01
Photon flux (15-150 keV) in 164 sec: 0.175594 ( -0.021736 0.016241 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.29575e-06 ( -1.8769e-07 1.59881e-07 ) ergs/cm2
Band function
Time interval is from -150.520 sec. to 13.444 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] : 17.5499 ( )
R^2/D10^2 : 1.11850E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 123.56 using 59 PHA bins.
# Reduced chi-squared = 2.1677 for 57 degrees of freedom
# Null hypothesis probability = 8.049976e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.140e-07 1.692e-08
25- 50 5.172e-07 5.396e-08
50-150 1.148e-06 1.461e-07
15-150 1.780e-06 1.709e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-25.0055 -200)
Norm : 0.721612 (-0.0498828 0.0498828)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.98 using 59 PHA bins.
# Reduced chi-squared = 1.070 for 57 degrees of freedom
# Null hypothesis probability = 3.347386e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.948e-07 2.649e-08
25- 50 5.670e-07 6.216e-08
50-150 1.244e-06 3.464e-07
15-150 2.105e-06 3.504e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.91198 (-1.12317 1.31921)
R1^2/D10^2 : 0.203143 (-0.094592 0.190998)
kT2 [keV] : 34.0285 (-6.5983 11.5973)
R2^2/D10^2 : 1.09654E-03 (-0.000625836 0.00107464)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.87 using 59 PHA bins.
# Reduced chi-squared = 0.8704 for 55 degrees of freedom
# Null hypothesis probability = 7.412265e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.824e-07 6.986e-08
25- 50 5.317e-07 1.108e-07
50-150 1.552e-06 4.845e-07
15-150 2.366e-06 5.842e-07
Peak spectrum fit
Power-law model
Time interval is from 3.220 sec. to 4.220 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.23920 ( -0.248021 0.242983 )
Norm@50keV : 1.00362E-02 ( -0.00137969 0.00137954 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.79 using 59 PHA bins.
# Reduced chi-squared = 1.102 for 57 degrees of freedom
# Null hypothesis probability = 2.785608e-01
Photon flux (15-150 keV) in 1 sec: 1.18497 ( -0.16957 0.1703 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.00742e-07 ( -1.5123e-08 1.52639e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 3.220 sec. to 4.220 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.830551 ( -1.14769 0.532459 )
Epeak [keV] : 156.459 ( -156.459 -156.459 )
Norm@50keV : 1.55470E-02 ( -0.00668174 0.0346775 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.25 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 56 degrees of freedom
# Null hypothesis probability = 2.635974e-01
Photon flux (15-150 keV) in 1 sec: 1.16083 ( -0.179316 0.17884 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.39657e-08 ( -8.28836e-09 5.75711e-09 ) ergs/cm2
Band function
Time interval is from 3.220 sec. to 4.220 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] : 18.8200 (-3.13608 4.01125)
R^2/D10^2 : 6.55496E-02 (-0.0310112 0.0553502)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.30 using 59 PHA bins.
# Reduced chi-squared = 1.233 for 57 degrees of freedom
# Null hypothesis probability = 1.108744e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.579e-09 1.354e-09
25- 50 2.188e-08 4.995e-09
50-150 5.684e-08 1.611e-08
15-150 8.329e-08 1.854e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-48.4983 -200)
Norm : 4.94773 (-0.690624 0.690624)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.05 using 59 PHA bins.
# Reduced chi-squared = 1.176 for 57 degrees of freedom
# Null hypothesis probability = 1.702845e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.232e-08 7.160e-09
25- 50 2.370e-08 1.320e-08
50-150 5.198e-08 2.909e-08
15-150 8.800e-08 4.905e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.61224 (-3.89657 7.83462)
R1^2/D10^2 : 1.06109 (-0.952641 52.6108)
kT2 [keV] : 25.9634 (-7.34282 116.204)
R2^2/D10^2 : 1.97392E-02 (-0.019321 0.0262926)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.73 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 55 degrees of freedom
# Null hypothesis probability = 2.213405e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.262e-09 5.305e-09
25- 50 2.165e-08 1.127e-08
50-150 6.618e-08 3.710e-08
15-150 9.710e-08 5.145e-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: 1.38805 ( -0.131492 0.130523 )
Norm@50keV : 1.43644E-03 ( -9.89996e-05 9.89009e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.03 using 59 PHA bins.
# Reduced chi-squared = 0.9304 for 57 degrees of freedom
# Null hypothesis probability = 6.246793e-01
Photon flux (15-150 keV) in 164 sec: 0.174464 ( -0.012613 0.0126827 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.28193e-06 ( -1.73176e-07 1.74239e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.38978 ( -0.136871 0.126912 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 1.43864E-03 ( -9.89316e-05 0.000469306 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.06 using 59 PHA bins.
# Reduced chi-squared = 0.9475 for 56 degrees of freedom
# Null hypothesis probability = 5.868123e-01
Photon flux (15-150 keV) in 164 sec: 0.174765 ( -0.019304 0.012335 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.27293e-06 ( -1.65246e-07 1.78891e-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) = 5.33e-07
S(50-100 keV) = 8.15e-07
T90 vs. Hardness ratio plot
T90 = 122.987999916077 sec.
Hardness ratio (energy fluence ratio) = 1.52908
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.36335
Count Ratio (50-100 keV) / (15-25 keV) = 1.11484
Mask shadow pattern
IMX = 3.476987868010762E-01, IMY = 1.262000909967558E-02
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:
-239.944000 -150.520000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9707 -15.6461 0.5 41.0 -10.6 4.5248 24.0 0.6 Sco X-1
256.2353 -37.8627 0.0 21.9 -41.2 0.0844 0.6 11.8 4U 1700-377
256.3166 -36.4666 6.7 22.1 -37.5 0.2377 1.7 6.3 GX 349+2
263.0222 -24.9504 0.0 22.1 -2.9 0.0406 0.3 12.3 GX 1+4
264.4586 -44.4523 8.0 16.1 -62.8 -0.1937 -1.4 12.2 4U 1735-44
268.1532 -1.4695 0.0 39.3 31.6 0.2320 1.0 12.9 SW J1753.5-0127
270.3531 -25.1237 5.8 17.3 11.0 0.2736 2.1 4.6 GX 5-1
270.3127 -25.5643 7.0 17.0 9.9 0.2317 1.8 10.7 GRS 1758-258
273.9598 -13.9827 5.4 25.6 34.0 0.3238 2.1 4.2 GX 17+2
275.6865 -30.3964 5.4 10.2 12.0 -0.2793 -2.1 12.5 H1820-303
285.1060 -25.0862 3.9 12.8 61.4 0.3940 3.0 10.6 HT1900.1-2455
263.0740 -33.6998 4.1 17.5 -25.2 -0.3564 -2.9 9.1 GX 354-0
251.8617 7.5511 2.1 54.5 16.8 3.8979 5.4 ------ UNKNOWN
295.7212 -26.2724 3.1 15.2 100.8 0.5128 3.7 ------ UNKNOWN
332.8590 -83.5212 2.9 48.0 -129.2 2.5345 4.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-150.520000 13.444000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1474 -15.6692 5.7 40.8 -10.5 0.7749 2.0 9.9 Sco X-1
255.7940 -37.8720 3.9 22.3 -41.4 0.8230 3.0 9.3 4U 1700-377
256.2801 -36.4959 4.7 22.1 -37.6 0.6425 2.4 8.7 GX 349+2
262.8694 -24.7771 5.8 22.3 -2.7 0.5201 2.0 7.8 GX 1+4
264.5378 -44.5120 5.9 16.1 -63.1 0.5145 2.0 9.5 4U 1735-44
268.2389 -1.4208 5.8 39.3 31.8 -0.9528 -2.0 8.0 SW J1753.5-0127
270.2482 -24.8867 5.3 17.5 11.2 0.5707 2.2 11.7 GX 5-1
270.1785 -25.8371 3.5 16.9 9.0 0.8262 3.3 8.8 GRS 1758-258
273.9699 -13.8512 14.4 25.7 34.1 -0.2572 -0.8 11.3 GX 17+2
275.8124 -30.3369 5.5 10.2 12.7 0.5312 2.1 6.1 H1820-303
285.0991 -24.7807 6.2 13.1 61.3 0.4844 1.8 9.1 HT1900.1-2455
263.0490 -33.6782 4.0 17.6 -25.1 0.7210 2.9 9.9 GX 354-0
314.8426 -8.6224 2.6 40.3 108.7 4.7624 4.5 ------ UNKNOWN
265.6547 -26.6331 0.8 19.2 -2.1 3.9693 15.1 ------ UNKNOWN
249.3065 -15.8102 2.4 37.7 -6.4 1.5825 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
78.956610 424.056600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9785 -15.6438 0.2 22.1 -61.0 21.8353 47.4 0.2 Sco X-1
256.0941 -37.9114 9.9 13.9 -143.4 0.4146 1.2 6.5 4U 1700-377
256.3320 -36.3633 3.9 12.6 -139.7 1.0584 3.0 6.1 GX 349+2
262.9440 -24.8980 6.8 3.0 -52.8 0.6521 1.7 9.8 GX 1+4
264.8666 -44.3202 12.3 17.8 -174.6 0.3192 0.9 9.4 4U 1735-44
268.4913 -1.3083 4.6 25.4 10.2 -0.9530 -2.5 11.4 SW J1753.5-0127
270.2355 -25.0761 3.8 4.4 74.8 1.0308 3.0 2.7 GX 5-1
270.4652 -25.7018 12.6 4.4 83.4 0.3154 1.0 9.1 GRS 1758-258
274.1553 -14.0126 5.1 14.9 37.6 0.8388 2.2 8.8 GX 17+2
275.9102 -30.3993 6.7 9.8 119.0 0.6479 1.7 2.1 H1820-303
284.9068 -25.0921 0.0 17.4 93.0 0.1560 0.4 12.5 HT1900.1-2455
288.9199 10.9844 6.8 43.8 37.6 1.5897 1.7 7.5 GRS 1915+105
262.8028 -33.6902 0.0 7.5 -158.1 0.7743 2.0 12.7 GX 354-0
282.3330 8.9940 3.4 39.1 30.3 2.1927 3.4 ------ UNKNOWN
277.4194 15.9895 2.2 44.1 19.9 3.6941 5.3 ------ UNKNOWN
284.9384 -30.4398 2.8 17.4 111.0 1.5898 4.1 ------ UNKNOWN
275.1136 7.1620 2.1 34.9 20.1 2.8455 5.4 ------ UNKNOWN
243.3196 25.6923 3.0 56.5 -20.7 5.7389 3.9 ------ UNKNOWN
Plot creation:
Mon Aug 6 22:27:42 EDT 2018