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
170.1286 24.9270 0.0098 14.4701 167.3957 0.5726498 19.552 TRIG_00826428
Foreground time interval of the image:
0.096 7.168 (delta_t = 7.072 [sec])
Background time interval of the image:
-238.816 0.096 (delta_t = 238.912 [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
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)
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 0.096 sec. to 7.168 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.35790 ( -0.142475 0.142761 )
Norm@50keV : 4.95128E-03 ( -0.000428222 0.000427196 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.17 using 59 PHA bins.
# Reduced chi-squared = 1.091 for 57 degrees of freedom
# Null hypothesis probability = 2.972892e-01
Photon flux (15-150 keV) in 7.072 sec: 0.597474 ( -0.05141 0.051453 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41431e-07 ( -3.29397e-08 3.33028e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.096 sec. to 7.168 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.343053 ( -0.802183 0.676202 )
Epeak [keV] : 79.6850 ( -16.8081 61.9121 )
Norm@50keV : 1.64226E-02 ( -0.00891734 0.0252565 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.16 using 59 PHA bins.
# Reduced chi-squared = 0.9850 for 56 degrees of freedom
# Null hypothesis probability = 5.065749e-01
Photon flux (15-150 keV) in 7.072 sec: 0.572963 ( -0.054105 0.053972 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.12912e-07 ( -3.74623e-08 3.82458e-08 ) ergs/cm2
Band function
Time interval is from 0.096 sec. to 7.168 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.32716E-03 ( -0.895717 -0.0187777 )
beta : -1.97665 ( 1.9742 0.516076 )
Epeak [keV] : 66.3725 ( -32.0621 47.21 )
Norm@50keV : 2.65544E-02 ( -0.0298881 37.9082 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.93 using 59 PHA bins.
# Reduced chi-squared = 0.9805 for 55 degrees of freedom
# Null hypothesis probability = 5.155915e-01
Photon flux (15-150 keV) in 7.072 sec: 0.573209 ( -0.053441 0.053406 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.1837e-07 ( -3.7431e-08 3.84606e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 15.3010 (-1.44532 1.63888)
R^2/D10^2 : 6.67661E-02 (-0.0198773 0.0274116)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.59 using 59 PHA bins.
# Reduced chi-squared = 1.168 for 57 degrees of freedom
# Null hypothesis probability = 1.803176e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.306e-08 3.692e-09
25- 50 9.332e-08 9.653e-09
50-150 1.500e-07 2.458e-08
15-150 2.664e-07 2.967e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-35.4379 -200)
Norm : 2.46521 (-0.209662 0.209662)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.17 using 59 PHA bins.
# Reduced chi-squared = 1.108 for 57 degrees of freedom
# Null hypothesis probability = 2.675214e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.341e-08 5.633e-09
25- 50 8.350e-08 1.529e-08
50-150 1.831e-07 8.296e-08
15-150 3.100e-07 9.505e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 44.6545 (-4.63957 3.73757)
R1^2/D10^2 : 1.09304E-03 (-0.0985203 0.551247)
kT2 [keV] : 11.3108 (-5.49416 2.78897)
R2^2/D10^2 : 0.145086 (-0.0671274 0.555565)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.55 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.45 using 59 PHA bins.
# Reduced chi-squared = 0.9919 for 55 degrees of freedom
# Reduced chi-squared = 0.9901 for 55 degrees of freedom
# Null hypothesis probability = 4.916418e-01
# Null hypothesis probability = 4.954164e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.049e-08 1.116e-08
25- 50 9.235e-08 3.731e-08
50-150 1.978e-07 9.900e-08
15-150 3.206e-07 1.458e-07
Peak spectrum fit
Power-law model
Time interval is from 0.236 sec. to 1.236 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.40810 ( -0.106841 0.107329 )
Norm@50keV : 2.47880E-02 ( -0.0015341 0.00152981 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.84 using 59 PHA bins.
# Reduced chi-squared = 1.067 for 57 degrees of freedom
# Null hypothesis probability = 3.395533e-01
Photon flux (15-150 keV) in 1 sec: 3.02436 ( -0.18601 0.18618 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.39155e-07 ( -1.65679e-08 1.668e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.236 sec. to 1.236 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.40509 ( -0.374541 0.161177 )
Epeak [keV] : 9996.82 ( -9996.71 -9996.71 )
Norm@50keV : 2.48765E-02 ( -0.00152908 0.0156944 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.84 using 59 PHA bins.
# Reduced chi-squared = 1.086 for 56 degrees of freedom
# Null hypothesis probability = 3.060837e-01
Photon flux (15-150 keV) in 1 sec: 3.02263 ( -0.19223 0.18788 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.38864e-07 ( -1.82668e-08 1.69534e-08 ) ergs/cm2
Band function
Time interval is from 0.236 sec. to 1.236 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.667762 ( 0.764112 5.76297 )
beta : -1.51999 ( -0.245351 0.184245 )
Epeak [keV] : 65.8917 ( -65.8917 249.081 )
Norm@50keV : 6.95979E-02 ( -0.0695979 2.15725e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.40 using 59 PHA bins.
# Reduced chi-squared = 1.080 for 55 degrees of freedom
# Null hypothesis probability = 3.182885e-01
Photon flux (15-150 keV) in 1 sec: 2.94041 ( -0.13235 0.24846 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.39155e-07 ( -1.65679e-08 1.668e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.7829 ( )
R^2/D10^2 : 0.363518 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 129.10 using 59 PHA bins.
# Reduced chi-squared = 2.2650 for 57 degrees of freedom
# Null hypothesis probability = 1.631690e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.667e-08 1.910e-09
25- 50 6.534e-08 5.110e-09
50-150 9.655e-08 1.280e-08
15-150 1.786e-07 1.330e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-23.0663 -200)
Norm : 12.4275 (-0.753736 0.753736)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.65 using 59 PHA bins.
# Reduced chi-squared = 1.169 for 57 degrees of freedom
# Null hypothesis probability = 1.790314e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.095e-08 2.115e-09
25- 50 5.953e-08 4.520e-09
50-150 1.306e-07 2.893e-08
15-150 2.211e-07 3.920e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.31436 (-1.41597 1.44518)
R1^2/D10^2 : 1.36785 (-0.485185 0.885711)
kT2 [keV] : 49.6352 (-16.6488 71.9034)
R2^2/D10^2 : 5.55810E-03 (-0.00442022 0.0126784)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.26 using 59 PHA bins.
# Reduced chi-squared = 1.041 for 55 degrees of freedom
# Null hypothesis probability = 3.913296e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.500e-08 4.280e-09
25- 50 6.349e-08 9.295e-09
50-150 1.539e-07 6.654e-08
15-150 2.424e-07 7.371e-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: 1.35790 ( -0.142475 0.142761 )
Norm@50keV : 4.95128E-03 ( -0.000428222 0.000427196 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.17 using 59 PHA bins.
# Reduced chi-squared = 1.091 for 57 degrees of freedom
# Null hypothesis probability = 2.972892e-01
Photon flux (15-150 keV) in 7.072 sec: 0.597465 ( -0.0514083 0.0514502 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41389e-07 ( -3.29886e-08 3.33049e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.343032 ( -0.802178 0.676207 )
Epeak [keV] : 79.6842 ( -16.808 61.9121 )
Norm@50keV : 1.64231E-02 ( -0.00891736 0.0252565 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.16 using 59 PHA bins.
# Reduced chi-squared = 0.9850 for 56 degrees of freedom
# Null hypothesis probability = 5.065749e-01
Photon flux (15-150 keV) in 7.072 sec: 0.572920 ( -0.054096 0.054025 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.13031e-07 ( -3.7495e-08 3.82765e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.32716E-03 ( -0.895717 -0.0187777 )
beta : -1.97665 ( 1.9742 0.516076 )
Epeak [keV] : 66.3725 ( -32.0621 47.21 )
Norm@50keV : 2.65544E-02 ( -0.0298881 37.9082 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.93 using 59 PHA bins.
# Reduced chi-squared = 0.9805 for 55 degrees of freedom
# Null hypothesis probability = 5.155915e-01
Photon flux (15-150 keV) in 7.072 sec: 0.573209 ( -0.053441 0.053406 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.1837e-07 ( -3.7431e-08 3.84606e-08 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 7.85e-08
S(50-100 keV) = 1.22e-07
T90 vs. Hardness ratio plot
T90 = 4.40799999237061 sec.
Hardness ratio (energy fluence ratio) = 1.55414
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.75922
Count Ratio (50-100 keV) / (15-25 keV) = 1.33671
Mask shadow pattern
IMX = -2.518425959351169E-01, IMY = -5.631317706837238E-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:
-238.816000 0.096000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5044 35.4151 7.1 57.2 -5.0 -1.4757 -1.6 4.9 Her X-1
191.0885 16.4902 3.0 18.0 85.3 0.7999 3.9 ------ UNKNOWN
134.2644 0.3504 3.3 56.8 173.9 4.6709 3.5 ------ UNKNOWN
127.7262 8.2839 2.8 57.2 -173.8 5.0046 4.2 ------ UNKNOWN
124.8780 26.4324 2.6 50.9 -152.5 2.7407 4.5 ------ UNKNOWN
171.7109 72.7484 3.3 40.0 -76.8 3.0193 3.5 ------ UNKNOWN
133.8516 58.5737 2.9 41.6 -108.3 3.4717 4.1 ------ UNKNOWN
122.3030 44.2015 3.0 48.1 -129.2 3.9731 3.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.096000 7.168000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3737 35.2865 14.0 57.1 -4.9 -0.1122 -0.8 5.3 Her X-1
198.9368 17.6143 2.3 20.7 63.7 0.1661 5.1 ------ UNKNOWN
247.2324 22.8140 2.2 56.2 11.8 0.9273 5.3 ------ UNKNOWN
170.1286 24.9271 0.6 14.5 167.4 0.5725 19.5 ------ UNKNOWN
153.0066 35.3017 2.3 25.4 -147.9 0.1572 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
272.084600 963.276800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9705 -15.6366 0.7 25.0 95.8 22.5001 16.2 0.6 Sco X-1
254.4896 35.3542 49.3 55.6 167.9 -1.2725 -0.2 1.7 Her X-1
256.0230 -37.8131 2.6 23.7 34.7 4.7663 4.4 2.5 4U 1700-377
256.6137 -36.3063 17.2 22.2 36.1 0.6817 0.7 11.1 GX 349+2
263.0217 -24.6314 7.1 9.9 51.2 1.4921 1.6 6.9 GX 1+4
264.5628 -44.5975 0.0 27.1 14.3 2.5790 2.4 11.7 4U 1735-44
268.2156 -1.3128 0.0 17.0 174.7 1.4788 1.5 12.4 SW J1753.5-0127
270.1184 -25.0662 8.2 7.1 10.6 1.2632 1.4 9.0 GX 5-1
270.2307 -25.6985 2.9 7.7 9.3 3.9476 4.3 4.7 GRS 1758-258
274.0641 -13.8812 3.5 5.1 -140.0 3.1739 3.3 9.9 GX 17+2
275.9108 -30.3773 4.0 13.1 -14.8 2.5744 2.8 1.0 H1820-303
285.0311 -24.8137 22.6 14.7 -56.0 -0.5101 -0.5 6.4 HT1900.1-2455
288.8058 10.9616 1.9 33.9 -143.2 8.2858 6.2 1.1 GRS 1915+105
262.8635 -33.8072 2.4 17.4 27.4 4.4263 4.9 6.5 GX 354-0
275.0902 7.1830 0.1 25.6 -166.3 96.4887 93.5 ------ UNKNOWN
297.4221 -47.3215 2.3 36.4 -26.4 6.3187 5.1 ------ UNKNOWN
319.5309 -45.8613 3.1 48.6 -39.8 14.0591 3.8 ------ UNKNOWN
320.4426 -35.8338 2.4 47.0 -53.2 23.4153 4.8 ------ UNKNOWN
305.3106 16.1417 3.1 48.1 -129.1 18.7146 3.7 ------ UNKNOWN
Plot creation:
Sun May 13 07:46:58 EDT 2018