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
106.7752 +7.1966 0.0117 14.5 165.8 0.2046 16.3 TRIG_01297832
------------------------------------------
Foreground time interval of the image:
0.000 0.672 (delta_t = 0.672 [sec])
Background time interval of the image:
-239.128 -233.738 (delta_t = 5.390 [sec])
-232.128 -162.998 (delta_t = 69.130 [sec])
-162.128 -137.538 (delta_t = 24.590 [sec])
-136.128 0.000 (delta_t = 136.128 [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 0.064000
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 0.064000
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 0.064000
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 0.672 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.651474 ( -0.192775 0.180714 )
Norm@50keV : 1.73769E-02 ( -0.00202771 0.00199497 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.83 using 59 PHA bins.
# Reduced chi-squared = 1.313 for 57 degrees of freedom
# Null hypothesis probability = 5.671194e-02
Photon flux (15-150 keV) in 0.672 sec: 2.01732 ( -0.220256 0.220782 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.45742e-07 ( -1.63522e-08 1.64157e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.672 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.70647E-02 ( -0.910233 0.699027 )
Epeak [keV] : 183.679 ( -75.7827 -183.635 )
Norm@50keV : 3.29089E-02 ( -0.0163535 0.0457457 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.76 using 59 PHA bins.
# Reduced chi-squared = 1.299 for 56 degrees of freedom
# Null hypothesis probability = 6.550329e-02
Photon flux (15-150 keV) in 0.672 sec: 1.98515 ( -0.22412 0.22421 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.41734e-07 ( -1.79968e-08 1.75164e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.672 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -0.949005 ( -0.383944 0.262403 )
Epeak [keV] : 43.1063 ( -10.8597 10.14 )
Norm@50keV : 49.0100 ( -5.09436 181.337 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.70 using 59 PHA bins.
# Reduced chi-squared = 1.231 for 55 degrees of freedom
# Null hypothesis probability = 1.167663e-01
Photon flux (15-150 keV) in 0.672 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] : 26.0835 (-3.77935 4.9524)
R^2/D10^2 : 4.69969E-02 (-0.0186186 0.0280621)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.68 using 59 PHA bins.
# Reduced chi-squared = 1.380 for 57 degrees of freedom
# Null hypothesis probability = 3.010193e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.648e-09 7.674e-10
25- 50 2.114e-08 3.696e-09
50-150 1.059e-07 1.700e-08
15-150 1.307e-07 1.942e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 7.41520 ( )
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.241e-08 6.959e-09
25- 50 2.387e-08 1.324e-08
50-150 5.235e-08 2.871e-08
15-150 8.862e-08 4.932e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 16.2193 (-5.49746 4.56603)
R1^2/D10^2 : 0.138647 (-0.0586449 0.14009)
kT2 [keV] : 200.000 (-157.884 -200)
R2^2/D10^2 : 3.95498E-04 (-0.000161075 0.00225257)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.467e-09 3.119e-09
25- 50 2.414e-08 1.430e-08
50-150 1.084e-07 5.853e-08
15-150 1.380e-07 7.194e-08
Peak spectrum fit
Power-law model
Time interval is from -0.162 sec. to 0.838 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.613559 ( -0.214909 0.198921 )
Norm@50keV : 1.21090E-02 ( -0.00156413 0.00152678 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.24 using 59 PHA bins.
# Reduced chi-squared = 1.197 for 57 degrees of freedom
# Null hypothesis probability = 1.463904e-01
Photon flux (15-150 keV) in 1 sec: 1.41151 ( -0.165769 0.166425 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.53849e-07 ( -1.79748e-08 1.80315e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.162 sec. to 0.838 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.213511 ( -0.952467 0.514952 )
Epeak [keV] : 269.166 ( -269.151 -269.151 )
Norm@50keV : 1.79302E-02 ( -0.00700632 0.0254705 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.52 using 59 PHA bins.
# Reduced chi-squared = 1.206 for 56 degrees of freedom
# Null hypothesis probability = 1.392808e-01
Photon flux (15-150 keV) in 1 sec: 1.39725 ( -0.16802 0.16863 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.51612e-07 ( -1.9293e-08 1.8817e-08 ) ergs/cm2
Band function
Time interval is from -0.162 sec. to 0.838 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -0.828493 ( -0.371977 0.268554 )
Epeak [keV] : 40.3665 ( -12.3701 13.002 )
Norm@50keV : 46.4458 ( -5.1022 281.492 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.56 using 59 PHA bins.
# Reduced chi-squared = 1.156 for 55 degrees of freedom
# Null hypothesis probability = 2.003667e-01
Photon flux (15-150 keV) in 1 sec: ( ) 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] : 27.7815 (-4.44901 6.14508)
R^2/D10^2 : 2.73956E-02 (-0.0118452 0.0185457)
(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 3.464e-09 8.025e-10
25- 50 2.067e-08 3.970e-09
50-150 1.157e-07 2.317e-08
15-150 1.398e-07 2.265e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 5.31054 ( )
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.322e-08 7.500e-09
25- 50 2.544e-08 1.418e-08
50-150 5.579e-08 3.106e-08
15-150 9.445e-08 5.265e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 15.8807 (-3.84166 4.60896)
R1^2/D10^2 : 9.86609E-02 (-0.0446243 0.114558)
kT2 [keV] : 200.000 (-151.911 -200)
R2^2/D10^2 : 3.05943E-04 (-0.000115522 0.00160931)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.657e-09 3.239e-09
25- 50 2.478e-08 1.452e-08
50-150 1.209e-07 6.250e-08
15-150 1.513e-07 1.015e-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: 0.651474 ( -0.192775 0.180714 )
Norm@50keV : 1.73769E-02 ( -0.00202771 0.00199497 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.83 using 59 PHA bins.
# Reduced chi-squared = 1.313 for 57 degrees of freedom
# Null hypothesis probability = 5.671194e-02
Photon flux (15-150 keV) in 0.672 sec: 2.01732 ( -0.220256 0.220782 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.45742e-07 ( -1.63522e-08 1.64157e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.70647E-02 ( -0.910233 0.699027 )
Epeak [keV] : 183.679 ( -75.7827 -183.635 )
Norm@50keV : 3.29089E-02 ( -0.0163535 0.0457457 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.76 using 59 PHA bins.
# Reduced chi-squared = 1.299 for 56 degrees of freedom
# Null hypothesis probability = 6.550329e-02
Photon flux (15-150 keV) in 0.672 sec: 1.98515 ( -0.22412 0.22421 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.41734e-07 ( -1.79968e-08 1.75164e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -0.949005 ( -0.383944 0.262403 )
Epeak [keV] : 43.1063 ( -10.8597 10.14 )
Norm@50keV : 49.0100 ( -5.09436 181.337 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.70 using 59 PHA bins.
# Reduced chi-squared = 1.231 for 55 degrees of freedom
# Null hypothesis probability = 1.167663e-01
Photon flux (15-150 keV) in 0.672 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) = 2.11e-08
S(50-100 keV) = 5.36e-08
T90 vs. Hardness ratio plot
T90 = 0.623999953269958 sec.
Hardness ratio (energy fluence ratio) = 2.54028
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.99308
Count Ratio (50-100 keV) / (15-25 keV) = 3.26442
Mask shadow pattern
IMX = -2.502583573890934E-01, IMY = -6.331530340810082E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
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:
-239.128000 -233.738000
-232.128000 -162.998000
-162.128000 -137.538000
-136.128000 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6378 22.0181 0.5 17.8 -81.9 9.2757 23.4 0.3 Crab
129.1506 -16.3550 2.3 45.6 145.2 5.7064 5.0 ------ UNKNOWN
134.4664 29.3793 3.0 29.7 69.3 2.2382 3.9 ------ UNKNOWN
94.3546 59.5285 3.8 38.8 -5.0 1.5747 3.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.672000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6053 22.0100 3.9 17.8 -81.9 -0.0401 -3.0 1.6 Crab
106.7752 7.1966 0.7 14.5 165.8 0.2046 16.3 ------ UNKNOWN
102.4849 -30.0242 1.9 51.2 -177.8 0.1928 6.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
55.572600 143.463600
144.872000 206.232000
206.872000 218.472000
219.872000 316.849100
317.872000 359.752000
360.872000 378.522000
420.872000 430.382000
450.872000 514.852000
535.872000 582.592000
583.872000 716.176200
720.872000 801.332000
802.872000 803.372000
805.872000 898.622000
899.872000 962.992000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6496 22.0225 0.5 26.7 -56.5 32.1139 23.8 1.0 Crab
117.9139 47.0720 3.1 41.0 9.0 6.3295 3.8 ------ UNKNOWN
93.2838 -39.1377 3.0 48.0 -168.6 9.3911 3.8 ------ UNKNOWN
72.4749 14.8152 2.5 34.4 -76.9 9.5890 4.7 ------ UNKNOWN
Plot creation:
Sun Mar 23 17:49:30 EDT 2025