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
49.6037 -47.2105 0.0049 29.2660 -64.1523 11.4082013 39.342 TRIG_00894718
Foreground time interval of the image:
-0.408 57.608 (delta_t = 58.016 [sec])
Background time interval of the image:
-239.256 -0.408 (delta_t = 238.848 [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 2.048000
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 2.048000
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 2.048000
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 -0.408 sec. to 57.608 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47418 ( -0.0510819 0.0510666 )
Norm@50keV : 1.27357E-02 ( -0.000350052 0.000350033 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.72 using 59 PHA bins.
# Reduced chi-squared = 1.170 for 57 degrees of freedom
# Null hypothesis probability = 1.775567e-01
Photon flux (15-150 keV) in 58.02 sec: 1.57917 ( -0.0473 0.04742 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.04137e-06 ( -2.05591e-07 2.05959e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.408 sec. to 57.608 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.19791 ( -0.207699 0.198358 )
Epeak [keV] : 157.155 ( -44.9149 235.314 )
Norm@50keV : 1.71261E-02 ( -0.00319941 0.00414159 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.96 using 59 PHA bins.
# Reduced chi-squared = 1.089 for 56 degrees of freedom
# Null hypothesis probability = 3.021816e-01
Photon flux (15-150 keV) in 58.02 sec: 1.54995 ( -0.0513 0.05143 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.91047e-06 ( -2.26914e-07 2.26233e-07 ) ergs/cm2
Band function
Time interval is from -0.408 sec. to 57.608 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] : 16.7398 ( )
R^2/D10^2 : 0.119330 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 323.49 using 59 PHA bins.
# Reduced chi-squared = 5.6752 for 57 degrees of freedom
# Null hypothesis probability = 6.603499e-39
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.968e-07 2.071e-08
25- 50 1.734e-06 6.933e-08
50-150 3.451e-06 1.685e-07
15-150 5.582e-06 1.691e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-8.26676 -200)
Norm : 6.51235 (-0.178977 0.178977)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.15 using 59 PHA bins.
# Reduced chi-squared = 1.266 for 57 degrees of freedom
# Null hypothesis probability = 8.519004e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.411e-07 2.756e-08
25- 50 1.810e-06 5.657e-08
50-150 3.970e-06 1.178e-07
15-150 6.722e-06 2.031e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.53460 (-0.702739 0.759434)
R1^2/D10^2 : 1.21026 (-0.330095 0.486772)
kT2 [keV] : 28.1942 (-2.53039 3.29467)
R2^2/D10^2 : 1.57937E-02 (-0.00510273 0.00643079)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.91 using 59 PHA bins.
# Reduced chi-squared = 0.9984 for 55 degrees of freedom
# Null hypothesis probability = 4.779499e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.052e-07 7.688e-08
25- 50 1.791e-06 1.082e-07
50-150 4.310e-06 3.844e-07
15-150 6.906e-06 4.235e-07
Peak spectrum fit
Power-law model
Time interval is from 23.740 sec. to 24.740 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.41568 ( -0.0747674 0.0751724 )
Norm@50keV : 9.66981E-02 ( -0.00436355 0.00436055 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.97 using 59 PHA bins.
# Reduced chi-squared = 1.175 for 57 degrees of freedom
# Null hypothesis probability = 1.720804e-01
Photon flux (15-150 keV) in 1 sec: 11.8188 ( -0.5463 0.5469 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.31537e-07 ( -4.58098e-08 4.59253e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 23.740 sec. to 24.740 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.773714 ( -0.342788 0.318808 )
Epeak [keV] : 101.977 ( -18.8182 47.8656 )
Norm@50keV : 0.196552 ( -0.0571908 0.0882113 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.36 using 59 PHA bins.
# Reduced chi-squared = 0.9707 for 56 degrees of freedom
# Null hypothesis probability = 5.371301e-01
Photon flux (15-150 keV) in 1 sec: 11.5249 ( -0.5634 0.5641 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.03504e-07 ( -4.88506e-08 4.87e-08 ) ergs/cm2
Band function
Time interval is from 23.740 sec. to 24.740 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] : 16.2909 ( )
R^2/D10^2 : 1.05526 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 130.81 using 59 PHA bins.
# Reduced chi-squared = 2.2949 for 57 degrees of freedom
# Null hypothesis probability = 9.882527e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.767e-08 4.645e-09
25- 50 2.464e-07 1.460e-08
50-150 4.601e-07 4.060e-08
15-150 7.642e-07 4.170e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-13.2237 -200)
Norm : 49.0591 (-2.19659 2.19659)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.17 using 59 PHA bins.
# Reduced chi-squared = 1.214 for 57 degrees of freedom
# Null hypothesis probability = 1.294597e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.221e-07 6.100e-09
25- 50 2.350e-07 1.160e-08
50-150 5.153e-07 2.845e-08
15-150 8.725e-07 4.255e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.67582 (-1.57456 1.62445)
R1^2/D10^2 : 5.26942 (-1.96919 4.19918)
kT2 [keV] : 27.9959 (-4.4099 7.49767)
R2^2/D10^2 : 0.119665 (-0.0699802 0.114393)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.79 using 59 PHA bins.
# Reduced chi-squared = 1.014 for 55 degrees of freedom
# Null hypothesis probability = 4.449032e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.097e-08 1.349e-08
25- 50 2.433e-07 3.730e-08
50-150 5.710e-07 1.604e-07
15-150 9.053e-07 2.033e-07
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: 1.47418 ( -0.0510819 0.0510666 )
Norm@50keV : 1.27357E-02 ( -0.000350052 0.000350033 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.72 using 59 PHA bins.
# Reduced chi-squared = 1.170 for 57 degrees of freedom
# Null hypothesis probability = 1.775567e-01
Photon flux (15-150 keV) in 58.02 sec: 1.57913 ( -0.0472957 0.0474121 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.04044e-06 ( -2.05659e-07 2.0597e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.19791 ( -0.207698 0.198359 )
Epeak [keV] : 157.154 ( -44.9147 235.315 )
Norm@50keV : 1.71261E-02 ( -0.00319942 0.00414158 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.96 using 59 PHA bins.
# Reduced chi-squared = 1.089 for 56 degrees of freedom
# Null hypothesis probability = 3.021816e-01
Photon flux (15-150 keV) in 58.02 sec: 1.54977 ( -0.05128 0.05141 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.91314e-06 ( -2.27438e-07 2.26278e-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) = 1.72e-06
S(50-100 keV) = 2.48e-06
T90 vs. Hardness ratio plot
T90 = 22.7840000391006 sec.
Hardness ratio (energy fluence ratio) = 1.44186
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.52002
Count Ratio (50-100 keV) / (15-25 keV) = 1.17829
Mask shadow pattern
IMX = 2.443212856985810E-01, IMY = 5.043304860523055E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
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:
-239.256000 -0.408000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.2490 -40.5307 0.0 38.1 60.1 1.1257 0.6 12.8 Vela X-1
170.4444 -60.7538 16.2 32.7 111.4 0.8888 0.7 8.7 Cen X-3
186.6576 -62.7861 6.9 35.8 124.4 2.4494 1.7 1.0 GX 301-2
110.9555 -28.2649 3.3 43.8 25.1 4.1303 3.5 ------ UNKNOWN
129.0866 -58.1489 2.3 21.0 71.8 3.7740 5.0 ------ UNKNOWN
273.7794 -63.7862 2.7 46.2 178.7 6.3077 4.3 ------ UNKNOWN
60.2049 -27.4902 2.5 45.3 -40.2 6.4360 4.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.408000 57.608000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5998 -40.4010 11.5 38.4 60.4 0.5380 1.0 9.8 Vela X-1
170.3546 -60.5322 28.7 32.9 111.1 -0.1669 -0.4 5.6 Cen X-3
186.5726 -62.6268 20.7 35.9 124.2 0.2553 0.6 8.9 GX 301-2
124.5553 -32.0557 1.8 43.0 43.1 2.7478 6.6 ------ UNKNOWN
254.5409 -54.6841 2.6 55.0 165.7 5.5428 4.5 ------ UNKNOWN
25.5169 -66.3703 2.8 22.4 -116.3 1.0079 4.1 ------ UNKNOWN
49.6037 -47.2105 0.3 29.3 -64.2 11.4072 39.3 ------ UNKNOWN
21.6297 -54.3339 3.5 32.4 -101.0 1.3960 3.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
681.844610 937.644600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.6477 -40.6647 13.8 38.4 30.8 0.5363 0.8 8.5 Vela X-1
170.1183 -60.4410 0.0 15.8 75.0 0.3340 0.9 12.4 Cen X-3
186.5894 -62.6846 1.8 14.7 106.1 2.2232 6.6 5.5 GX 301-2
255.9293 -37.7429 7.2 52.8 170.5 1.9923 1.6 6.7 4U 1700-377
256.4845 -36.5276 6.0 54.1 170.6 2.6919 1.9 6.7 GX 349+2
264.7699 -44.3881 8.7 48.5 -178.7 1.0323 1.3 3.9 4U 1735-44
147.8684 -53.0299 2.7 24.5 41.5 1.6735 4.2 ------ UNKNOWN
109.8060 -78.7349 2.3 12.5 -56.3 1.4755 4.9 ------ UNKNOWN
87.5654 -32.2197 3.1 56.8 -17.4 5.0586 3.8 ------ UNKNOWN
10.5050 -62.4358 3.8 40.7 -92.0 5.6338 3.0 ------ UNKNOWN
Plot creation:
Thu Apr 11 00:53:36 EDT 2019