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
270.9686 +41.4849 0.0469 20.5 -164.8 0.0089 4.1 TRIG_01082569
------------------------------------------
Foreground time interval of the image:
0.000 0.032 (delta_t = 0.032 [sec])
Background time interval of the image:
-239.376 -221.226 (delta_t = 18.150 [sec])
-220.376 -163.746 (delta_t = 56.630 [sec])
-162.376 -149.816 (delta_t = 12.560 [sec])
-148.376 -21.170 (delta_t = 127.206 [sec])
-20.376 -7.376 (delta_t = 13.000 [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 0.032000
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 0.032000
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 0.032000
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 0.032 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.50000 ( -1.5 -1.5 )
Norm@50keV : 0.0 ( 0 0.00239358 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.17 using 59 PHA bins.
# Reduced chi-squared = 0.9329 for 57 degrees of freedom
# Null hypothesis probability = 6.193526e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 0.340108 ( -0.34 0.5067 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 1.12651e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 0.0 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.17 using 59 PHA bins.
# Reduced chi-squared = 0.9495 for 56 degrees of freedom
# Null hypothesis probability = 5.824980e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 1.70392 1.71365 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.38138 ( 0.98395 0.98395 )
beta : -9.37167 ( 2.5 2.5 )
Epeak [keV] : 21.3691 ( -80 -80 )
Norm@50keV : 2078.49 ( -2087.32 1581.84 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.69 using 59 PHA bins.
# Reduced chi-squared = 0.8125 for 55 degrees of freedom
# Null hypothesis probability = 8.383758e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 ( ) 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] : 4.53358 (-1.30162 1.24747)
R^2/D10^2 : 14.7230 (-14.711 48.1272)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.98 using 59 PHA bins.
# Reduced chi-squared = 0.8242 for 57 degrees of freedom
# Null hypothesis probability = 8.255026e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.615e-10 5.254e-10
25- 50 3.875e-10 3.302e-10
50-150 9.583e-12 1.395e-11
15-150 1.159e-09 8.347e-10
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.52596 (-6.28022 11.4762)
Norm : 23.6566 (-22.1064 116.382)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.665e-10 3.878e-10
25- 50 1.879e-10 2.019e-10
50-150 1.126e-11 2.845e-11
15-150 6.657e-10 5.946e-10
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.53265 (-1.3008 1.24836)
R1^2/D10^2 : 14.7251 (-11.9845 48.2298)
kT2 [keV] : 0.289830 (-0.28983 -0.28983)
R2^2/D10^2 : 2.97388E-04 (-0.000297365 -0.000297365)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.50000 ( -1.5 -1.5 )
Norm@50keV : 0.0 ( 0 0.00239358 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.17 using 59 PHA bins.
# Reduced chi-squared = 0.9329 for 57 degrees of freedom
# Null hypothesis probability = 6.193526e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 0.340108 ( -0.34 0.5067 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 1.12651e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 0.0 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.17 using 59 PHA bins.
# Reduced chi-squared = 0.9495 for 56 degrees of freedom
# Null hypothesis probability = 5.824980e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 1.70392 1.71365 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.38138 ( 0.98395 0.98395 )
beta : -9.37167 ( 2.5 2.5 )
Epeak [keV] : 21.3691 ( -80 -80 )
Norm@50keV : 2078.49 ( -2087.32 1581.84 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.69 using 59 PHA bins.
# Reduced chi-squared = 0.8125 for 55 degrees of freedom
# Null hypothesis probability = 8.383758e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.53358 (-1.30162 1.24747)
R^2/D10^2 : 14.7230 (-14.711 48.1272)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.615e-10 5.302e-10
25- 50 3.875e-10 3.296e-10
50-150 9.583e-12 1.613e-11
15-150 1.159e-09 9.038e-10
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.52596 (-6.28022 11.4762)
Norm : 23.6566 (-22.1064 116.382)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.665e-10 4.034e-10
25- 50 1.879e-10 2.243e-10
50-150 1.126e-11 1.968e-11
15-150 6.657e-10 5.938e-10
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.53265 (-1.3008 1.24836)
R1^2/D10^2 : 14.7251 (-11.9845 48.2298)
kT2 [keV] : 0.289830 (-0.28983 -0.28983)
R2^2/D10^2 : 2.97388E-04 (-0.000297365 -0.000297365)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 1.50000 ( -1.5 -1.5 )
Norm@50keV : 0.0 ( 0 0.00239358 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.17 using 59 PHA bins.
# Reduced chi-squared = 0.9329 for 57 degrees of freedom
# Null hypothesis probability = 6.193526e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 0.340108 ( -0.34 0.5067 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 1.12651e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 0.0 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.17 using 59 PHA bins.
# Reduced chi-squared = 0.9495 for 56 degrees of freedom
# Null hypothesis probability = 5.824980e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 1.70392 1.71365 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.38138 ( 0.98395 0.98395 )
beta : -9.37167 ( 2.5 2.5 )
Epeak [keV] : 21.3691 ( -80 -80 )
Norm@50keV : 2078.49 ( -2087.32 1581.84 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.69 using 59 PHA bins.
# Reduced chi-squared = 0.8125 for 55 degrees of freedom
# Null hypothesis probability = 8.383758e-01
Photon flux (15-150 keV) in 0.032 sec: 0.0 ( ) 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) = 0.00e+00
S(50-100 keV) = 0.00e+00
T90 vs. Hardness ratio plot
T90 = 0.031999945640564 sec.
Hardness ratio (energy fluence ratio) =
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.423298
Count Ratio (50-100 keV) / (15-25 keV) = -0.11895
Mask shadow pattern
IMX = -3.601120012311139E-01, IMY = 9.792367184824767E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
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:
-239.376000 -221.226000
-220.376000 -163.746000
-162.376000 -149.816000
-148.376000 -21.170500
-20.376000 -7.376000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4952 35.3566 3.7 22.4 -125.4 0.9268 3.1 2.0 Her X-1
288.9181 10.9627 5.2 54.8 -165.6 -1.9899 -2.2 7.1 GRS 1915+105
299.6122 35.2075 0.5 39.0 165.4 8.7710 21.2 1.1 Cyg X-1
307.9486 40.9273 6.1 39.2 151.6 1.0905 1.9 7.5 Cyg X-3
328.4952 66.7410 2.7 34.7 104.4 2.3469 4.2 ------ UNKNOWN
303.1599 18.7233 2.1 54.3 175.0 5.5623 5.6 ------ UNKNOWN
208.1747 23.7474 3.7 45.7 -57.5 3.9778 3.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.032000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5223 35.1615 5.7 22.6 -125.4 0.0049 2.0 11.3 Her X-1
288.9432 10.9401 11.3 54.8 -165.6 0.0063 1.0 8.5 GRS 1915+105
299.5596 35.0619 49.0 39.1 165.6 -0.0007 -0.2 8.5 Cyg X-1
308.1605 40.9739 39.5 39.3 151.4 0.0011 0.3 2.6 Cyg X-3
284.9346 36.0816 2.4 31.0 -179.0 0.0121 4.8 ------ UNKNOWN
255.3750 16.6470 2.5 41.1 -124.4 0.0254 4.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
52.424590 646.344000
647.624000 696.094000
697.624000 712.074000
713.624000 962.725200
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3692 35.3485 2.1 14.4 -69.7 5.3724 5.5 4.3 Her X-1
268.3737 -1.4395 13.2 42.9 -136.3 1.7514 0.9 0.9 SW J1753.5-0127
288.6981 10.9810 28.6 34.1 -172.2 0.4321 0.4 6.3 GRS 1915+105
299.6095 35.2194 0.4 23.1 135.9 35.4721 32.4 1.4 Cyg X-1
308.3258 40.8900 28.7 27.8 118.3 -0.5543 -0.4 10.5 Cyg X-3
308.0561 37.6786 1.6 28.5 124.9 8.8515 7.2 ------ UNKNOWN
253.8420 74.9248 2.4 34.4 31.9 6.8034 4.8 ------ UNKNOWN
294.6773 -0.9526 2.9 47.5 -173.2 6.6422 4.1 ------ UNKNOWN
294.6701 -8.0835 2.8 54.0 -169.6 11.6689 4.2 ------ UNKNOWN
268.6547 7.9270 4.1 33.5 -135.9 4.0949 2.8 ------ UNKNOWN
254.6922 11.9680 3.8 32.7 -109.6 6.1447 3.0 ------ UNKNOWN
Plot creation:
Sat Nov 6 12:15:29 EDT 2021