Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
314.6788 +41.7555 0.0273 13.5 -144.0 1.0528 7.0 TRIG_00895479
------------------------------------------
Foreground time interval of the image:
0.000 128.000 (delta_t = 128.000 [sec])
Background time interval of the image:
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) 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.
- 5) 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.
- 6) 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)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of 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.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 128.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.66244 ( -0.338381 0.393549 )
Norm@50keV : 3.66660E-04 ( -0.000112549 0.000116805 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.53 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 57 degrees of freedom
# Null hypothesis probability = 2.303088e-01
Photon flux (15-150 keV) in 128 sec: 7.98250E-02 ( -0.0136744 0.0137194 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.92536e-07 ( -1.0583e-07 1.13405e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 128.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.08408 ( -4.57999 2.15032 )
Epeak [keV] : 25.6027 ( -7.51264 4.62574 )
Norm@50keV : 0.131708 ( -0.149098 262.735 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.39 using 59 PHA bins.
# Reduced chi-squared = 0.9713 for 56 degrees of freedom
# Null hypothesis probability = 5.359656e-01
Photon flux (15-150 keV) in 128 sec: 7.83300E-02 ( -0.013055 0.013131 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.23908e-07 ( -7.98144e-08 8.86682e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 128.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.19140 ( -2.20915 -1.16096 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 25.6970 ( -6.33846 4.55821 )
Norm@50keV : 0.156752 ( -0.156741 34.2905 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.36 using 59 PHA bins.
# Reduced chi-squared = 0.9884 for 55 degrees of freedom
# Null hypothesis probability = 4.988962e-01
Photon flux (15-150 keV) in 128 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.29033e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.67780 (-0.959738 1.09207)
R^2/D10^2 : 0.200425 (-0.0945525 0.184042)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.30 using 59 PHA bins.
# Reduced chi-squared = 0.9526 for 57 degrees of freedom
# Null hypothesis probability = 5.770649e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.746e-07 4.900e-08
25- 50 2.178e-07 6.771e-08
50-150 3.034e-08 1.808e-08
15-150 4.227e-07 1.149e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.1724 (-7.1266 10.7637)
Norm : 0.781120 (-0.227642 0.345147)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.97 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 57 degrees of freedom
# Null hypothesis probability = 4.392653e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.839e-07 4.673e-08
25- 50 1.894e-07 5.538e-08
50-150 8.133e-08 5.268e-08
15-150 4.546e-07 1.196e-07
Double BB
# Reduced chi-squared = 0.9513 for 55 degrees of freedom
# Reduced chi-squared = 0.9503 for 55 degrees of freedom
# Reduced chi-squared = 0.9497 for 55 degrees of freedom
# Reduced chi-squared = 0.9496 for 55 degrees of freedom
# Null hypothesis probability = 5.010320e-01
# Null hypothesis probability = 5.022123e-01
# Null hypothesis probability = 5.557276e-01
# Null hypothesis probability = 5.666485e-01
# Null hypothesis probability = 5.737408e-01
# Null hypothesis probability = 5.776997e-01
# Null hypothesis probability = 5.798020e-01
# Null hypothesis probability = 5.809100e-01
# Null hypothesis probability = 5.813070e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.752e-07 1.062e-04
25- 50 2.166e-07 7.392e-04
50-150 3.320e-08 1.244e-02
15-150 4.250e-07 1.236e-02
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 128.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.66244 ( -0.338381 0.393549 )
Norm@50keV : 3.66660E-04 ( -0.000112549 0.000116805 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.53 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 57 degrees of freedom
# Null hypothesis probability = 2.303088e-01
Photon flux (15-150 keV) in 128 sec: 7.98250E-02 ( -0.0136744 0.0137194 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.92536e-07 ( -1.0583e-07 1.13405e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 128.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.08408 ( -4.57999 2.15032 )
Epeak [keV] : 25.6027 ( -7.51264 4.62574 )
Norm@50keV : 0.131708 ( -0.149098 262.735 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.39 using 59 PHA bins.
# Reduced chi-squared = 0.9713 for 56 degrees of freedom
# Null hypothesis probability = 5.359656e-01
Photon flux (15-150 keV) in 128 sec: 7.83300E-02 ( -0.013055 0.013131 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.23908e-07 ( -7.98144e-08 8.86682e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 128.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.19140 ( -2.20915 -1.16096 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 25.6970 ( -6.33851 4.55821 )
Norm@50keV : 0.156752 ( -0.156741 34.2871 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.36 using 59 PHA bins.
# Reduced chi-squared = 0.9884 for 55 degrees of freedom
# Null hypothesis probability = 4.988962e-01
Photon flux (15-150 keV) in 128 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.29033e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.67780 (-0.959738 1.09207)
R^2/D10^2 : 0.200425 (-0.0945525 0.184042)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.30 using 59 PHA bins.
# Reduced chi-squared = 0.9526 for 57 degrees of freedom
# Null hypothesis probability = 5.770649e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.746e-07 4.783e-08
25- 50 2.178e-07 6.833e-08
50-150 3.034e-08 1.702e-08
15-150 4.227e-07 1.172e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.1724 (-7.1266 10.7637)
Norm : 0.781120 (-0.227642 0.345147)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.97 using 59 PHA bins.
# Reduced chi-squared = 1.017 for 57 degrees of freedom
# Null hypothesis probability = 4.392653e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.839e-07 4.580e-08
25- 50 1.894e-07 6.346e-08
50-150 8.133e-08 5.590e-08
15-150 4.546e-07 1.306e-07
Double BB
# Reduced chi-squared = 0.9513 for 55 degrees of freedom
# Reduced chi-squared = 0.9503 for 55 degrees of freedom
# Reduced chi-squared = 0.9497 for 55 degrees of freedom
# Reduced chi-squared = 0.9496 for 55 degrees of freedom
# Null hypothesis probability = 5.010320e-01
# Null hypothesis probability = 5.022123e-01
# Null hypothesis probability = 5.557276e-01
# Null hypothesis probability = 5.666485e-01
# Null hypothesis probability = 5.737408e-01
# Null hypothesis probability = 5.776997e-01
# Null hypothesis probability = 5.798020e-01
# Null hypothesis probability = 5.809100e-01
# Null hypothesis probability = 5.813070e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.752e-07 1.251e-04
25- 50 2.166e-07 7.827e-04
50-150 3.320e-08 1.267e-02
15-150 4.250e-07 1.260e-02
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: 2.66244 ( -0.338381 0.393549 )
Norm@50keV : 3.66660E-04 ( -0.000112549 0.000116805 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.53 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 57 degrees of freedom
# Null hypothesis probability = 2.303088e-01
Photon flux (15-150 keV) in 128 sec: 7.98250E-02 ( -0.0136744 0.0137194 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.92536e-07 ( -1.0583e-07 1.13405e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.08408 ( -4.57999 2.15032 )
Epeak [keV] : 25.6027 ( -7.51264 4.62574 )
Norm@50keV : 0.131708 ( -0.149098 262.735 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.39 using 59 PHA bins.
# Reduced chi-squared = 0.9713 for 56 degrees of freedom
# Null hypothesis probability = 5.359656e-01
Photon flux (15-150 keV) in 128 sec: 7.83300E-02 ( -0.013055 0.013131 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.23908e-07 ( -7.98144e-08 8.86682e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.19140 ( -2.20915 -1.16096 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 25.6970 ( -6.33848 4.55821 )
Norm@50keV : 0.156752 ( -0.156741 36.2732 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.36 using 59 PHA bins.
# Reduced chi-squared = 0.9884 for 55 degrees of freedom
# Null hypothesis probability = 4.988962e-01
Photon flux (15-150 keV) in 128 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.29033e-07 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.65e-07
S(50-100 keV) = 1.04e-07
T90 vs. Hardness ratio plot
T90 = 128 sec.
Hardness ratio (energy fluence ratio) = 0.630303
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.842788
Count Ratio (50-100 keV) / (15-25 keV) = 0.0247299
Mask shadow pattern
IMX = -1.943132318852840E-01, IMY = 1.409179795112322E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 128.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5398 35.3418 3.5 39.9 103.2 -2.2279 -3.3 4.0 Her X-1
268.3098 -1.5052 36.0 46.9 45.8 -0.2475 -0.3 4.7 SW J1753.5-0127
288.8683 10.9453 2.8 24.8 29.3 0.7932 4.1 4.1 GRS 1915+105
299.5834 35.2047 0.5 4.1 134.7 3.6284 23.1 0.4 Cyg X-1
308.1455 41.0540 4.2 9.9 -161.1 -0.4690 -2.8 6.3 Cyg X-3
326.2643 38.4398 36.5 20.1 -120.0 0.0558 0.3 8.3 Cyg X-2
270.9339 43.8608 2.6 27.5 119.4 1.1324 4.5 ------ UNKNOWN
314.6788 41.7555 1.6 13.5 -144.0 1.0528 7.0 ------ UNKNOWN
347.9984 74.8669 2.5 48.0 -170.7 1.4619 4.6 ------ UNKNOWN
312.0318 -2.7398 2.7 35.9 -20.9 0.8477 4.3 ------ UNKNOWN
343.1906 21.7090 2.7 37.2 -89.1 1.9916 4.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
176.200600 465.110000
466.000000 656.320000
657.000000 963.026000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.7400 10.9430 3.3 38.3 18.5 3.3985 3.5 3.4 GRS 1915+105
299.5844 35.2048 0.3 13.5 40.5 23.3482 39.6 0.3 Cyg X-1
308.2548 41.0707 7.9 4.9 58.7 0.8910 1.4 9.6 Cyg X-3
326.1873 38.3618 5.2 9.4 -98.2 1.3348 2.2 2.5 Cyg X-2
295.0351 24.2910 2.6 23.9 23.7 2.7431 4.4 ------ UNKNOWN
347.7553 67.5582 3.0 31.3 178.2 2.8827 3.9 ------ UNKNOWN
314.6995 41.7700 1.2 0.0 -166.9 5.9976 9.5 ------ UNKNOWN
310.7369 27.1964 3.4 14.9 -11.7 1.9829 3.4 ------ UNKNOWN
49.9728 62.3876 2.7 56.1 -171.6 10.8599 4.3 ------ UNKNOWN
43.0288 51.6812 4.3 57.6 -158.2 12.8163 2.7 ------ UNKNOWN
Plot creation:
Thu Mar 28 17:23:04 EDT 2019