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
163.7743 +22.4606 0.0084 55.2 -10.7 5.2030 23.0 TRIG_00791201
------------------------------------------
Foreground time interval of the image:
-15.528 8.773 (delta_t = 24.301 [sec])
Background time interval of the image:
-239.528 -15.528 (delta_t = 224.000 [sec])
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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000
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 0.256000
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 0.256000
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 -15.528 sec. to 64.472 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.66545 ( -0.0627465 0.0630636 )
Norm@50keV : 1.18427E-02 ( -0.000422763 0.000422662 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.86 using 59 PHA bins.
# Reduced chi-squared = 1.243 for 57 degrees of freedom
# Null hypothesis probability = 1.026334e-01
Photon flux (15-150 keV) in 80 sec: 1.55434 ( -0.0619123 0.062157 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.79816e-06 ( -3.22411e-07 3.22677e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -15.528 sec. to 64.472 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.05949 ( -0.289709 0.273018 )
Epeak [keV] : 85.9748 ( -11.8525 26.0639 )
Norm@50keV : 2.24322E-02 ( -0.00548333 0.00777071 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.57 using 59 PHA bins.
# Reduced chi-squared = 0.9923 for 56 degrees of freedom
# Null hypothesis probability = 4.910347e-01
Photon flux (15-150 keV) in 80 sec: 1.49082 ( -0.06678 0.06722 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.55848e-06 ( -3.4376e-07 3.4288e-07 ) ergs/cm2
Band function
Time interval is from -15.528 sec. to 64.472 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.05960 ( -0.261468 0.307837 )
beta : -10.0000 ( 10 7.10543e-15 )
Epeak [keV] : 85.9665 ( -11.363 26.0577 )
Norm@50keV : 2.24276E-02 ( -0.00549062 0.00777641 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.57 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 55 degrees of freedom
# Null hypothesis probability = 4.530793e-01
Photon flux (15-150 keV) in 80 sec: 1.49008 ( 5.50992 -0.05728 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.56464e-06 ( -8.56408e-06 -3.5632e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 15.8814 ( )
R^2/D10^2 : 0.137663 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 187.73 using 59 PHA bins.
# Reduced chi-squared = 3.2935 for 57 degrees of freedom
# Null hypothesis probability = 7.381887e-16
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.753e-07 4.220e-08
25- 50 2.405e-06 1.164e-07
50-150 4.228e-06 2.628e-07
15-150 7.209e-06 2.912e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 160.526 (-24.1176 31.9469)
Norm : 6.32211 (-0.279474 0.299267)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.45 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.584070e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.287e-06 7.800e-08
25- 50 2.411e-06 1.864e-07
50-150 4.904e-06 1.194e-06
15-150 8.602e-06 1.330e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.44094 (-1.15111 1.29941)
R1^2/D10^2 : 1.96273 (-0.924754 2.24577)
kT2 [keV] : 22.2165 (-2.08071 2.87778)
R2^2/D10^2 : 3.32108E-02 (-0.0131932 0.0166888)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.28 using 59 PHA bins.
# Reduced chi-squared = 1.096 for 55 degrees of freedom
# Null hypothesis probability = 2.905783e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.193e-06 2.060e-07
25- 50 2.388e-06 2.788e-07
50-150 4.873e-06 4.376e-07
15-150 8.454e-06 7.828e-07
Peak spectrum fit
Power-law model
Time interval is from 39.972 sec. to 40.972 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.87297 ( -0.0664507 0.0673196 )
Norm@50keV : 8.02005E-02 ( -0.00327793 0.00327105 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.21 using 59 PHA bins.
# Reduced chi-squared = 1.232 for 57 degrees of freedom
# Null hypothesis probability = 1.123095e-01
Photon flux (15-150 keV) in 1 sec: 11.3798 ( -0.492316 0.493784 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.37287e-07 ( -3.0128e-08 3.0154e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 39.972 sec. to 40.972 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.970515 ( -0.342818 0.318167 )
Epeak [keV] : 59.2365 ( -5.13673 7.23509 )
Norm@50keV : 0.221365 ( -0.0656053 0.102647 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.85 using 59 PHA bins.
# Reduced chi-squared = 0.7831 for 56 degrees of freedom
# Null hypothesis probability = 8.807854e-01
Photon flux (15-150 keV) in 1 sec: 10.8348 ( -0.517 0.5199 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.1069e-07 ( -3.215e-08 3.1965e-08 ) ergs/cm2
Band function
Time interval is from 39.972 sec. to 40.972 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.598227 ( -0.487928 0.631061 )
beta : -2.44152 ( 2.44449 0.251401 )
Epeak [keV] : 52.4234 ( -6.70659 8.28198 )
Norm@50keV : 0.360786 ( -0.16256 0.464793 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.30 using 59 PHA bins.
# Reduced chi-squared = 0.7510 for 55 degrees of freedom
# Null hypothesis probability = 9.144032e-01
Photon flux (15-150 keV) in 1 sec: 10.7067 ( -3.7067 -0.5268 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.08596e-07 ( -7.08589e-07 -3.1424e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.3749 ( )
R^2/D10^2 : 1.83990 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 134.77 using 59 PHA bins.
# Reduced chi-squared = 2.3644 for 57 degrees of freedom
# Null hypothesis probability = 3.038440e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.975e-08 5.385e-09
25- 50 2.476e-07 1.170e-08
50-150 2.846e-07 2.280e-08
15-150 6.019e-07 2.685e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 98.3935 (-11.6141 14.2196)
Norm : 50.2260 (-2.92965 3.12105)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.67 using 59 PHA bins.
# Reduced chi-squared = 0.8188 for 57 degrees of freedom
# Null hypothesis probability = 8.337623e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.313e-07 1.045e-08
25- 50 2.262e-07 1.140e-08
50-150 3.632e-07 9.090e-08
15-150 7.208e-07 9.375e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.69573 (-1.51346 1.29775)
R1^2/D10^2 : 6.24315 (-2.01901 4.59722)
kT2 [keV] : 25.1568 (-5.00186 8.31716)
R2^2/D10^2 : 0.100413 (-0.0667515 0.166674)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.71 using 59 PHA bins.
# Reduced chi-squared = 0.9220 for 55 degrees of freedom
# Null hypothesis probability = 6.391987e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.012e-07 1.325e-08
25- 50 2.441e-07 2.845e-08
50-150 3.559e-07 1.041e-07
15-150 7.012e-07 1.180e-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: 1.35018 ( -0.111364 0.110444 )
Norm@50keV : 1.48316E-02 ( -0.000998854 0.000998088 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.04 using 59 PHA bins.
# Reduced chi-squared = 1.123 for 57 degrees of freedom
# Null hypothesis probability = 2.433427e-01
Photon flux (15-150 keV) in 24.3 sec: 1.78684 ( -0.130895 0.131478 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.51986e-06 ( -2.43058e-07 2.4335e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.524064 ( -0.549402 0.487407 )
Epeak [keV] : 103.981 ( -20.3518 64.0868 )
Norm@50keV : 3.42449E-02 ( -0.0130605 0.0238652 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.06 using 59 PHA bins.
# Reduced chi-squared = 0.9832 for 56 degrees of freedom
# Null hypothesis probability = 5.104807e-01
Photon flux (15-150 keV) in 24.3 sec: 1.71745 ( -0.13642 0.13703 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.44139e-06 ( -2.52015e-07 2.51262e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.523989 ( -0.356674 0.766852 )
beta : -10.0000 ( 10 3.55271e-15 )
Epeak [keV] : 103.961 ( -16.0825 63.7374 )
Norm@50keV : 3.42477E-02 ( -0.0130488 0.0238995 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.06 using 59 PHA bins.
# Reduced chi-squared = 1.001 for 55 degrees of freedom
# Null hypothesis probability = 4.723878e-01
Photon flux (15-150 keV) in 24.3 sec: 1.73157 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.44268e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 2.35e-06
S(50-100 keV) = 2.96e-06
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 1.25957
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.5277
Count Ratio (50-100 keV) / (15-25 keV) = 1.23784
Mask shadow pattern
IMX = 1.412443566695675E+00, IMY = 2.658009751184113E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000
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:
-239.528000 -15.528000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2860 35.3398 10.1 39.5 -126.4 -0.5620 -1.1 8.4 Her X-1
299.5224 35.1340 7.5 55.8 -171.9 1.5591 1.5 5.2 Cyg X-1
308.1026 40.7979 6.5 53.8 177.6 1.6178 1.9 9.3 Cyg X-3
236.0430 30.1646 3.9 39.9 -101.0 2.9032 3.0 ------ UNKNOWN
212.9095 25.5453 3.1 42.5 -69.2 3.8311 3.8 ------ UNKNOWN
205.9653 23.6280 3.1 44.8 -60.2 4.5322 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-15.528000 8.772600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3958 35.4489 4.8 39.4 -126.6 -0.3245 -2.4 7.1 Her X-1
299.6946 35.2347 19.4 55.8 -172.1 -0.1524 -0.6 5.5 Cyg X-1
308.0133 40.8979 5.8 53.7 177.6 0.4805 2.0 5.5 Cyg X-3
9.4896 68.4986 2.5 42.3 121.7 1.0700 4.7 ------ UNKNOWN
163.7743 22.4606 0.5 55.2 -10.7 5.2030 23.0 ------ UNKNOWN
208.6700 31.5647 2.3 36.7 -63.0 0.6600 5.0 ------ UNKNOWN
252.2394 29.3485 2.0 44.5 -120.8 1.6516 5.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
77.472600 714.772590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
123.8430 19.4810 3.3 37.3 68.1 3.6480 3.5 ------ UNKNOWN
137.6263 68.3022 4.0 48.6 142.4 5.8547 2.9 ------ UNKNOWN
225.0061 61.6276 2.7 56.8 -175.2 10.0667 4.3 ------ UNKNOWN
219.8589 54.0530 2.9 52.3 -167.0 5.4170 4.0 ------ UNKNOWN
192.6050 29.7125 3.0 26.8 -136.9 1.7012 3.8 ------ UNKNOWN
Plot creation:
Mon Nov 20 18:46:54 EST 2017