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
53.3896 -50.2140 0.0025 25.1501 -147.2724 7.0760727 77.592 TRIG_00821902
Foreground time interval of the image:
-5.908 11.901 (delta_t = 17.809 [sec])
Background time interval of the image:
-239.800 -5.908 (delta_t = 233.892 [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 -5.908 sec. to 196.280 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.33366 ( -0.0365017 0.0364244 )
Norm@50keV : 5.95097E-03 ( -0.000110991 0.000110877 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 31.12 using 59 PHA bins.
# Reduced chi-squared = 0.5459 for 57 degrees of freedom
# Null hypothesis probability = 9.979517e-01
Photon flux (15-150 keV) in 202.2 sec: 0.714565 ( -0.015113 0.01519 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17975e-05 ( -2.24137e-07 2.24027e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -5.908 sec. to 196.280 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.28422 ( -0.147458 0.0626794 )
Epeak [keV] : 835.133 ( -873.109 -873.109 )
Norm@50keV : 6.24554E-03 ( -0.000151065 0.000939427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 30.81 using 59 PHA bins.
# Reduced chi-squared = 0.5501 for 56 degrees of freedom
# Null hypothesis probability = 9.975257e-01
Photon flux (15-150 keV) in 202.2 sec: 0.711628 ( -0.017292 0.015502 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17631e-05 ( -2.46039e-07 2.36635e-07 ) ergs/cm2
Band function
Time interval is from -5.908 sec. to 196.280 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.957389 ( 0.965904 4.90849 )
beta : -1.35482 ( 1.35474 0.0504054 )
Epeak [keV] : 101.047 ( -106.405 534.259 )
Norm@50keV : 9.90254E-03 ( -0.00362951 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 30.16 using 59 PHA bins.
# Reduced chi-squared = 0.5484 for 55 degrees of freedom
# Null hypothesis probability = 9.974258e-01
Photon flux (15-150 keV) in 202.2 sec: 0.706471 ( -0.020212 0.020163 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17975e-05 ( -2.24137e-07 2.24027e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 19.5103 ( )
R^2/D10^2 : 3.29456E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 577.81 using 59 PHA bins.
# Reduced chi-squared = 10.137 for 57 degrees of freedom
# Null hypothesis probability = 3.054644e-87
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.935e-07 1.870e-08
25- 50 2.418e-06 6.572e-08
50-150 6.797e-06 2.032e-07
15-150 9.708e-06 2.113e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 3.04428 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 179.67 using 59 PHA bins.
# Reduced chi-squared = 3.1521 for 57 degrees of freedom
# Null hypothesis probability = 1.265700e-14
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.533e-06 3.084e-08
25- 50 2.948e-06 6.673e-08
50-150 6.467e-06 1.375e-07
15-150 1.095e-05 2.265e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.42241 (-0.658245 0.69876)
R1^2/D10^2 : 0.349739 (-0.0787425 0.109018)
kT2 [keV] : 33.3968 (-2.63333 3.37204)
R2^2/D10^2 : 4.57828E-03 (-0.00123784 0.00146842)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.89 using 59 PHA bins.
# Reduced chi-squared = 0.8162 for 55 degrees of freedom
# Null hypothesis probability = 8.328664e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.091e-06 7.623e-08
25- 50 2.765e-06 1.102e-07
50-150 7.829e-06 3.488e-07
15-150 1.169e-05 4.802e-07
Peak spectrum fit
Power-law model
Time interval is from 8.880 sec. to 9.880 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.792318 ( -0.0744128 0.0732945 )
Norm@50keV : 4.49179E-02 ( -0.00201102 0.00200434 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.63 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 57 degrees of freedom
# Null hypothesis probability = 4.153878e-01
Photon flux (15-150 keV) in 1 sec: 5.16392 ( -0.22699 0.22712 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.2666e-07 ( -2.45718e-08 2.46299e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 8.880 sec. to 9.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.320594 ( -0.326893 0.303271 )
Epeak [keV] : 212.681 ( -62.798 254.404 )
Norm@50keV : 7.17533E-02 ( -0.0182277 0.0262939 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.31 using 59 PHA bins.
# Reduced chi-squared = 0.9163 for 56 degrees of freedom
# Null hypothesis probability = 6.525530e-01
Photon flux (15-150 keV) in 1 sec: 5.10055 ( -0.23063 0.23066 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.18764e-07 ( -2.57605e-08 2.56133e-08 ) ergs/cm2
Band function
Time interval is from 8.880 sec. to 9.880 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.861797 ( 0.861797 0.861797 )
beta : -0.792325 ( -0.0732479 0.0744914 )
Epeak [keV] : 15.4898 ( -15.4898 -15.4898 )
Norm@50keV : 6.44428E-02 ( -0.0214898 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.63 using 59 PHA bins.
# Reduced chi-squared = 1.066 for 55 degrees of freedom
# Null hypothesis probability = 3.437755e-01
Photon flux (15-150 keV) in 1 sec: 0.158822 ( -0.158822 -0.122593 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.15822e-07 ( -2.55241e-08 2.55303e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 24.9081 (-1.47239 1.61782)
R^2/D10^2 : 0.135257 (-0.0231766 0.0272362)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 103.30 using 59 PHA bins.
# Reduced chi-squared = 1.8122 for 57 degrees of freedom
# Null hypothesis probability = 1.708166e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.461e-08 1.295e-09
25- 50 8.271e-08 5.765e-09
50-150 3.807e-07 2.415e-08
15-150 4.780e-07 2.435e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 19.6049 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 325.37 using 59 PHA bins.
# Reduced chi-squared = 5.7082 for 57 degrees of freedom
# Null hypothesis probability = 3.023904e-39
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.882e-08 2.430e-09
25- 50 9.391e-08 5.045e-09
50-150 2.060e-07 1.255e-08
15-150 3.487e-07 2.220e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 12.6853 (-3.12865 2.97471)
R1^2/D10^2 : 0.566762 (-0.208775 0.44839)
kT2 [keV] : 49.7410 (-15.6305 139.753)
R2^2/D10^2 : 1.40974E-02 (-0.00935442 0.0237322)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.52 using 59 PHA bins.
# Reduced chi-squared = 0.8821 for 55 degrees of freedom
# Null hypothesis probability = 7.190827e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.316e-08 5.565e-09
25- 50 9.246e-08 2.079e-08
50-150 4.006e-07 1.570e-07
15-150 5.162e-07 1.754e-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: 0.729163 ( -0.0337873 0.0335367 )
Norm@50keV : 2.62460E-02 ( -0.000527065 0.000525234 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.88 using 59 PHA bins.
# Reduced chi-squared = 0.8224 for 57 degrees of freedom
# Null hypothesis probability = 8.282927e-01
Photon flux (15-150 keV) in 17.81 sec: 3.02737 ( -0.057836 0.0579003 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.63193e-06 ( -1.0489e-07 1.04917e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.436046 ( -0.146641 0.141824 )
Epeak [keV] : 351.340 ( -93.7335 252.975 )
Norm@50keV : 3.39394E-02 ( -0.00388911 0.00451035 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 34.10 using 59 PHA bins.
# Reduced chi-squared = 0.6090 for 56 degrees of freedom
# Null hypothesis probability = 9.908369e-01
Photon flux (15-150 keV) in 17.81 sec: 2.99026 ( -0.06003 0.06022 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.60675e-06 ( -1.07092e-07 1.0686e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99995 ( -4.99995 -4.99995 )
beta : -0.729232 ( -0.0335244 0.0338154 )
Epeak [keV] : 16.7741 ( -16.7741 9982.82 )
Norm@50keV : 1.32803E+04 ( -235.943 7.6273e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.86 using 59 PHA bins.
# Reduced chi-squared = 0.8519 for 55 degrees of freedom
# Null hypothesis probability = 7.745948e-01
Photon flux (15-150 keV) in 17.81 sec: 2.99287 ( -0.05574 0.05127 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.63254e-06 ( -1.04971e-07 1.04847e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 2.67e-06
S(50-100 keV) = 4.25e-06
T90 vs. Hardness ratio plot
T90 = 111.707999944687 sec.
Hardness ratio (energy fluence ratio) = 1.59176
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.45754
Count Ratio (50-100 keV) / (15-25 keV) = 1.24904
Mask shadow pattern
IMX = -3.949684927038987E-01, IMY = 2.538342577597678E-01
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:
-239.800000 -5.908000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6605 22.0150 1.6 59.2 -16.3 9.3995 7.4 1.5 Crab
135.2994 -40.4930 0.0 39.9 94.9 1.3215 1.4 11.1 Vela X-1
130.6924 -79.0703 2.5 45.9 152.4 2.4676 4.6 ------ UNKNOWN
346.1517 -84.0090 2.8 53.8 171.0 3.3893 4.1 ------ UNKNOWN
90.0994 -2.0331 3.4 35.6 -5.1 0.9369 3.4 ------ UNKNOWN
66.3539 -17.7881 2.9 24.6 -59.0 0.9794 4.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-5.908000 11.900600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6193 21.9494 6.2 59.1 -16.3 -1.0493 -1.9 4.0 Crab
135.4658 -40.4494 10.9 40.0 94.9 -0.4245 -1.1 6.9 Vela X-1
111.0214 -5.9492 2.5 40.0 29.1 0.7291 4.6 ------ UNKNOWN
40.5797 -64.6452 2.5 37.3 -167.6 0.4789 4.6 ------ UNKNOWN
53.3894 -50.2142 0.1 25.2 -147.3 7.0749 77.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
59.100600 962.228800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
90.0037 -22.2732 2.9 39.9 14.3 3.2758 3.9 ------ UNKNOWN
338.1102 -70.7904 2.5 38.8 165.6 4.8453 4.6 ------ UNKNOWN
53.4336 -50.2020 1.5 0.0 71.9 4.2707 7.7 ------ UNKNOWN
38.2514 -23.9125 2.8 28.8 -74.7 3.5920 4.1 ------ UNKNOWN
69.1755 5.7945 3.4 57.6 -26.3 12.9018 3.4 ------ UNKNOWN
32.8998 -13.8032 4.0 40.0 -76.9 6.0226 2.9 ------ UNKNOWN
3.3522 -25.6409 3.0 45.3 -121.3 11.2746 3.8 ------ UNKNOWN
356.7331 -27.7389 3.1 48.0 -129.1 12.8246 3.7 ------ UNKNOWN
Plot creation:
Sun May 13 08:00:50 EDT 2018