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
221.6517 10.0018 0.0088 47.3747 7.9314 4.1905155 21.917 TRIG_00707231
Foreground time interval of the image:
25.140 73.301 (delta_t = 48.161 [sec])
Background time interval of the image:
-239.000 25.140 (delta_t = 264.140 [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 25.140 sec. to 247.148 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.87765 ( -0.0500786 0.0503738 )
Norm@50keV : 5.55951E-03 ( -0.000147552 0.000147321 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.56 using 59 PHA bins.
# Reduced chi-squared = 1.238 for 57 degrees of freedom
# Null hypothesis probability = 1.070007e-01
Photon flux (15-150 keV) in 222 sec: 0.790435 ( -0.023109 0.02321 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.13478e-05 ( -3.00877e-07 3.01276e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 25.140 sec. to 247.148 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.41470 ( -0.222108 0.211593 )
Epeak [keV] : 64.2334 ( -7.20772 13.7869 )
Norm@50keV : 9.33167E-03 ( -0.00192445 0.00257672 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.87 using 59 PHA bins.
# Reduced chi-squared = 0.9976 for 56 degrees of freedom
# Null hypothesis probability = 4.798245e-01
Photon flux (15-150 keV) in 222 sec: 0.759942 ( -0.026338 0.026509 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.09266e-05 ( -3.53923e-07 3.53548e-07 ) ergs/cm2
Band function
Time interval is from 25.140 sec. to 247.148 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.40589 ( -0.186244 1.02236 )
beta : -2.53175 ( 2.53034 0.558933 )
Epeak [keV] : 63.7063 ( -24.5807 14.0436 )
Norm@50keV : 9.43548E-03 ( -0.00199736 0.0309994 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.81 using 59 PHA bins.
# Reduced chi-squared = 1.015 for 55 degrees of freedom
# Null hypothesis probability = 4.441536e-01
Photon flux (15-150 keV) in 222 sec: 0.759406 ( -0.029053 0.026653 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.09381e-05 ( -3.88591e-07 3.51337e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.2428 ( )
R^2/D10^2 : 0.121814 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 328.95 using 59 PHA bins.
# Reduced chi-squared = 5.7710 for 57 degrees of freedom
# Null hypothesis probability = 6.805039e-40
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.005e-06 5.317e-08
25- 50 3.532e-06 1.132e-07
50-150 3.958e-06 2.031e-07
15-150 8.495e-06 2.287e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 97.8965 (-8.99022 10.5405)
Norm : 3.40702 (-0.143579 0.152056)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.53 using 59 PHA bins.
# Reduced chi-squared = 0.9917 for 57 degrees of freedom
# Null hypothesis probability = 4.927546e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.977e-06 1.179e-07
25- 50 3.403e-06 1.299e-07
50-150 5.449e-06 1.279e-06
15-150 1.083e-05 1.267e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.76999 (-0.665553 0.699747)
R1^2/D10^2 : 0.995710 (-0.288812 0.459474)
kT2 [keV] : 22.0573 (-1.9588 2.52079)
R2^2/D10^2 : 1.33575E-02 (-0.00475956 0.00632191)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.53 using 59 PHA bins.
# Reduced chi-squared = 1.137 for 55 degrees of freedom
# Null hypothesis probability = 2.265172e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.837e-06 1.759e-07
25- 50 3.426e-06 1.854e-07
50-150 5.429e-06 4.695e-07
15-150 1.069e-05 6.971e-07
Peak spectrum fit
Power-law model
Time interval is from 88.592 sec. to 89.592 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.66323 ( -0.18899 0.194558 )
Norm@50keV : 2.16198E-02 ( -0.00258725 0.00256068 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.20 using 59 PHA bins.
# Reduced chi-squared = 1.232 for 57 degrees of freedom
# Null hypothesis probability = 1.125157e-01
Photon flux (15-150 keV) in 1 sec: 2.83556 ( -0.32741 0.32794 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.0084e-07 ( -2.5169e-08 2.53691e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 88.592 sec. to 89.592 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.10438 ( -0.881933 0.677773 )
Epeak [keV] : 78.9614 ( -31.241 -78.9614 )
Norm@50keV : 4.20007E-02 ( -0.0220028 0.0758428 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.60 using 59 PHA bins.
# Reduced chi-squared = 1.225 for 56 degrees of freedom
# Null hypothesis probability = 1.203094e-01
Photon flux (15-150 keV) in 1 sec: 2.78155 ( -0.3359 0.33597 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.9446e-07 ( -2.68731e-08 2.69055e-08 ) ergs/cm2
Band function
Time interval is from 88.592 sec. to 89.592 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.12968 ( -0.492001 0.651512 )
beta : -9.34901 ( 9.3699 19.3699 )
Epeak [keV] : 81.0034 ( -25.17 -80.9632 )
Norm@50keV : 4.06219E-02 ( -0.0206254 0.014846 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.61 using 59 PHA bins.
# Reduced chi-squared = 1.247 for 55 degrees of freedom
# Null hypothesis probability = 1.027868e-01
Photon flux (15-150 keV) in 1 sec: 2.78835 ( -0.31625 0.32417 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.0084e-07 ( -2.5169e-08 2.53691e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.5871 (-1.81047 2.11856)
R^2/D10^2 : 0.451953 (-0.185032 0.307606)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 85.05 using 59 PHA bins.
# Reduced chi-squared = 1.492 for 57 degrees of freedom
# Null hypothesis probability = 9.404969e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.767e-08 3.780e-09
25- 50 6.374e-08 1.043e-08
50-150 7.627e-08 1.738e-08
15-150 1.577e-07 2.195e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 151.397 (-58.587 -149.849)
Norm : 11.7235 (-1.46402 1.87329)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.75 using 59 PHA bins.
# Reduced chi-squared = 1.206 for 57 degrees of freedom
# Null hypothesis probability = 1.368856e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.009e-08 8.305e-09
25- 50 5.584e-08 1.916e-08
50-150 1.107e-07 6.382e-08
15-150 1.966e-07 9.288e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.90093 (-2.12685 2.58353)
R1^2/D10^2 : 3.22818 (-2.05462 8.65261)
kT2 [keV] : 23.3995 (-5.97379 14.4598)
R2^2/D10^2 : 4.67898E-02 (-0.0388749 0.105093)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.00 using 59 PHA bins.
# Reduced chi-squared = 1.236 for 55 degrees of freedom
# Null hypothesis probability = 1.120305e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.893e-08 1.566e-08
25- 50 5.762e-08 2.936e-08
50-150 1.082e-07 5.760e-08
15-150 1.947e-07 9.872e-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: 1.97354 ( -0.121375 0.124992 )
Norm@50keV : 5.72242E-03 ( -0.000442505 0.000437373 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.24 using 59 PHA bins.
# Reduced chi-squared = 0.9691 for 57 degrees of freedom
# Null hypothesis probability = 5.413800e-01
Photon flux (15-150 keV) in 48.16 sec: 0.848088 ( -0.0590811 0.0591987 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.53833e-06 ( -1.88549e-07 1.89826e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.19879 ( -0.632367 0.547735 )
Epeak [keV] : 46.7987 ( -9.53275 13.8921 )
Norm@50keV : 1.50489E-02 ( -0.00734896 0.0179653 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.13 using 59 PHA bins.
# Reduced chi-squared = 0.8773 for 56 degrees of freedom
# Null hypothesis probability = 7.304076e-01
Photon flux (15-150 keV) in 48.16 sec: 0.817477 ( -0.062705 0.062766 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.39145e-06 ( -2.12554e-07 2.15261e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.894537 ( -0.757734 1.43083 )
beta : -2.48875 ( 2.48978 0.413692 )
Epeak [keV] : 42.9242 ( -11.2957 13.6936 )
Norm@50keV : 2.32374E-02 ( -0.00747771 0.208241 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.22 using 59 PHA bins.
# Reduced chi-squared = 0.8768 for 55 degrees of freedom
# Null hypothesis probability = 7.292452e-01
Photon flux (15-150 keV) in 48.16 sec: 0.814439 ( -0.062651 0.062895 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.1567e-15 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.29e-06
S(50-100 keV) = 3.57e-06
T90 vs. Hardness ratio plot
T90 = 152.743999958038 sec.
Hardness ratio (energy fluence ratio) = 1.08511
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.23573
Count Ratio (50-100 keV) / (15-25 keV) = 0.759506
Mask shadow pattern
IMX = 1.076134540255951E+00, IMY = -1.499279680944308E-01
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:
-239.000000 25.140000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2230 -60.7863 26.6 34.2 -167.3 0.1315 0.4 10.2 Cen X-3
186.4121 -62.7100 3.9 30.5 179.7 0.8832 3.0 7.6 GX 301-2
244.9946 -15.6392 0.8 41.3 57.5 14.3566 14.4 0.9 Sco X-1
229.3222 10.0490 2.6 50.5 17.1 3.3226 4.4 ------ UNKNOWN
132.1176 -48.1912 2.5 53.7 -144.3 7.3125 4.6 ------ UNKNOWN
181.8078 11.7370 2.9 50.6 -44.6 5.2453 3.9 ------ UNKNOWN
173.0762 -1.4844 2.6 43.6 -64.1 4.9762 4.4 ------ UNKNOWN
153.4070 -28.3513 2.5 43.1 -112.6 5.1620 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
25.140000 73.300590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3178 -60.6218 47.7 34.1 -167.1 -0.0272 -0.2 0.1 Cen X-3
186.8245 -62.8971 6.8 30.5 179.2 -0.1787 -1.7 8.9 GX 301-2
244.9016 -15.5073 4.1 41.3 57.2 0.9400 2.8 9.2 Sco X-1
245.4948 -28.9040 2.3 35.6 76.9 1.0089 5.1 ------ UNKNOWN
221.6517 10.0018 0.5 47.4 7.9 4.1908 21.9 ------ UNKNOWN
112.6839 -77.1742 2.2 57.0 179.2 2.7195 5.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
136.500590 838.953600
841.000000 963.160000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9831 -15.6489 0.4 34.6 121.4 44.4238 28.5 0.6 Sco X-1
254.4154 35.4031 4.7 39.2 28.1 2.8130 2.4 4.2 Her X-1
269.9377 34.8153 3.3 50.4 36.4 12.0966 3.5 ------ UNKNOWN
247.4134 -23.2847 2.7 41.8 126.9 11.1393 4.2 ------ UNKNOWN
223.4599 -17.6320 2.6 27.7 160.0 3.5334 4.4 ------ UNKNOWN
218.2703 -21.9598 3.5 32.1 169.6 3.0250 3.3 ------ UNKNOWN
221.6574 10.0170 1.6 0.0 63.9 4.9501 7.3 ------ UNKNOWN
215.5740 -2.6995 3.2 14.1 -170.6 2.6798 3.6 ------ UNKNOWN
238.1401 63.9575 3.2 55.2 -7.5 8.1949 3.6 ------ UNKNOWN
183.3188 40.3897 3.4 45.5 -57.7 14.5454 3.4 ------ UNKNOWN
Plot creation:
Mon Aug 22 16:20:06 EDT 2016