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
232.9794 -53.3364 0.0175 10.2128 -79.0193 0.8795507 11.022 TRIG_01340954
Foreground time interval of the image:
0.672 38.752 (delta_t = 38.080 [sec])
Background time interval of the image:
-239.648 0.672 (delta_t = 240.320 [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 16.384000
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 16.384000
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 16.384000
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 0.672 sec. to 38.752 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.95496 ( -0.233742 0.24732 )
Norm@50keV : 1.30961E-03 ( -0.000214552 0.00020937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.81 using 59 bins.
Reduced chi-squared = 0.944035
# Null hypothesis probability of 5.96e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 38.08 sec: 0.192497 ( -0.025122 0.025128 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.59089e-07 ( -7.11555e-08 7.30157e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.672 sec. to 38.752 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.09368 ( -1.40101 1.05759 )
Epeak [keV] : 42.1430 ( -32.6396 -42.1427 )
Norm@50keV : 4.24512E-03 ( -0.00424547 0.0256399 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.97 using 59 bins.
Reduced chi-squared = 0.928036
# Null hypothesis probability of 6.28e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 38.08 sec: 0.186678 ( -0.025998 0.026104 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.16991e-07 ( -7.85392e-08 8.85969e-08 ) ergs/cm2
Band function
Time interval is from 0.672 sec. to 38.752 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 9.66962 (-1.36268 1.62706)
R^2/D10^2 : 0.103335 (-0.0467452 0.0827013)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.76 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.76e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.401e-08 1.794e-08
25- 50 1.753e-07 2.993e-08
50-150 8.296e-08 2.846e-08
15-150 3.323e-07 5.998e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 67.2019 (-22.0673 42.5471)
Norm : 0.966508 (-0.188221 0.234407)
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.03 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.61e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.399e-08 1.696e-08
25- 50 1.479e-07 2.450e-08
50-150 1.842e-07 7.664e-08
15-150 4.260e-07 8.423e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.57066 (-2.37048 2.59469)
R1^2/D10^2 : 0.327706 (-0.208337 1.09696)
kT2 [keV] : 20.2303 (-16.0757 -20.2318)
R2^2/D10^2 : 3.68437E-03 (-0.00367277 0.0293026)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.08 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.25e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.168e-08 5.059e-08
25- 50 1.527e-07 7.841e-08
50-150 1.808e-07 1.034e-07
15-150 4.252e-07 2.171e-07
Peak spectrum fit
Power-law model
Time interval is from 13.644 sec. to 14.644 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.85140 ( -0.516694 0.616194 )
Norm@50keV : 3.87962E-03 ( -0.0014168 0.0013019 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.21 using 59 bins.
Reduced chi-squared = 0.933509
# Null hypothesis probability of 6.18e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.545663 ( -0.155547 0.155629 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.56771e-08 ( -1.21537e-08 1.26811e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 13.644 sec. to 14.644 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45471 ( -3.03258 0.781993 )
Epeak [keV] : 66.8266 ( -66.8042 -66.8358 )
Norm@50keV : 6.25390E-03 ( -0.00623861 0.183721 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.10 using 59 bins.
Reduced chi-squared = 0.948214
# Null hypothesis probability of 5.85e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.537938 ( -0.161748 0.159274 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.49365e-08 ( -1.21389e-08 1.28186e-08 ) ergs/cm2
Band function
Time interval is from 13.644 sec. to 14.644 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 13.5520 (-3.81774 5.14858)
R^2/D10^2 : 8.58703E-02 (-0.0857603 0.193968)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.58 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.28e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.340e-09 2.083e-09
25- 50 1.202e-08 7.310e-09
50-150 1.429e-08 9.320e-09
15-150 2.964e-08 1.839e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 98.6044 (-58.9767 -98.6044)
Norm : 2.41705 (-0.796236 1.28006)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.14 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.20e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.183e-09 3.749e-09
25- 50 1.068e-08 6.570e-09
50-150 1.728e-08 1.379e-08
15-150 3.414e-08 2.289e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.40112 (-1.32707 2.424)
R1^2/D10^2 : 111.194 (-115.371 272036)
kT2 [keV] : 16.0428 (-4.53602 7.65186)
R2^2/D10^2 : 4.22946E-02 (-0.0325264 0.0567937)
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.76e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.776e-09 3.471e-09
25- 50 9.769e-09 5.930e-09
50-150 1.708e-08 1.143e-08
15-150 3.363e-08 1.968e-08
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: 1.95496 ( -0.233742 0.24732 )
Norm@50keV : 1.30961E-03 ( -0.000214552 0.00020937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.81 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.96e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 38.08 sec: 0.192483 ( -0.0251193 0.0251256 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.59009e-07 ( -7.11148e-08 7.30462e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.09480 ( -1.40137 1.05723 )
Epeak [keV] : 42.1503 ( -32.6701 -42.1434 )
Norm@50keV : 4.23834E-03 ( -0.00424524 0.0256421 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.28e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 38.08 sec: 0.186641 ( -0.025988 0.026095 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.17083e-07 ( -7.84764e-08 8.85055e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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) = 1.36e-07
S(50-100 keV) = 1.41e-07
T90 vs. Hardness ratio plot
T90 = 28.9919998645782 sec.
Hardness ratio (energy fluence ratio) = 1.03676
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.19645
Count Ratio (50-100 keV) / (15-25 keV) = 0.545184
Mask shadow pattern
IMX = 3.431637815570782E-02, IMY = 1.768599573562708E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
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:
-239.648000 0.672000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.5078 -60.7310 11.7 41.0 -117.1 1.2417 1.0 8.6 Cen X-3
187.0581 -62.7657 0.0 32.9 -115.6 0.6181 0.9 11.0 GX 301-2
244.9934 -15.6263 0.9 38.3 7.7 9.3463 12.8 1.2 Sco X-1
256.0336 -37.8623 2.1 16.4 32.3 2.2082 5.6 2.5 4U 1700-377
256.2752 -36.4414 14.1 17.8 31.9 0.3318 0.8 7.8 GX 349+2
262.9796 -24.7135 20.4 30.6 39.0 -0.3296 -0.6 2.5 GX 1+4
264.7075 -44.4935 6.8 13.2 67.3 0.7561 1.7 3.0 4U 1735-44
270.3124 -25.2171 81.0 32.2 51.5 0.1034 0.1 8.4 GX 5-1
270.4687 -25.7383 6.4 31.8 52.1 1.2988 1.8 9.0 GRS 1758-258
273.8579 -14.0723 8.5 43.8 50.0 -1.9575 -1.3 8.9 GX 17+2
275.9281 -30.2713 4.5 29.9 64.5 2.0075 2.6 5.7 H1820-303
284.9710 -25.0269 5.2 38.6 71.7 -3.6610 -2.2 7.3 HT1900.1-2455
262.9646 -33.9999 3.2 21.7 45.5 1.5761 3.6 10.0 GX 354-0
6.2041 -65.2891 2.2 51.4 167.0 6.6725 5.2 ------ UNKNOWN
250.6824 -18.7387 2.2 35.0 16.6 3.0489 5.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.672000 38.752000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2269 -60.7993 5.0 41.1 -117.2 -0.5595 -2.3 10.9 Cen X-3
186.5789 -62.8352 8.3 33.1 -115.8 0.1700 1.4 4.4 GX 301-2
245.0842 -15.7485 6.3 38.2 7.8 0.2276 1.8 8.9 Sco X-1
255.9433 -37.8352 2.1 16.4 32.1 0.4504 5.5 2.1 4U 1700-377
256.3656 -36.4008 4.4 17.9 32.2 -0.2185 -2.6 3.6 GX 349+2
262.9550 -24.7025 3.8 30.6 39.0 -0.3373 -3.0 3.9 GX 1+4
264.7047 -44.6051 36.9 13.1 67.6 -0.0252 -0.3 9.4 4U 1735-44
270.1174 -24.9975 5.3 32.4 51.0 0.2873 2.2 10.3 GX 5-1
270.2869 -25.7469 3.3 31.7 51.8 -0.4501 -3.5 0.9 GRS 1758-258
273.8369 -13.9622 5.2 43.9 49.9 0.6905 2.2 10.8 GX 17+2
276.0399 -30.2548 10.0 30.0 64.6 -0.1459 -1.2 9.0 H1820-303
284.9419 -24.9944 3.1 38.6 71.6 0.9688 3.7 6.8 HT1900.1-2455
263.1256 -33.9440 8.6 21.8 45.8 0.1268 1.3 9.4 GX 354-0
13.9240 -66.2616 2.4 52.7 170.9 1.2511 4.8 ------ UNKNOWN
232.9849 -53.3426 1.0 10.2 -79.1 0.9013 11.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
110.852600 962.415100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2622 -60.6296 2.5 33.6 -134.8 8.7025 4.7 1.6 Cen X-3
186.5576 -62.7069 10.7 25.7 -136.7 1.6027 1.1 4.7 GX 301-2
245.0068 -15.6551 0.9 38.8 11.8 29.0732 12.1 1.8 Sco X-1
256.0754 -37.8417 2.3 22.1 48.3 7.3966 4.9 4.2 4U 1700-377
256.6436 -36.5111 7.7 23.5 47.1 -2.4087 -1.5 11.4 GX 349+2
262.9956 -24.7514 165.5 36.3 43.2 -0.2008 -0.1 0.8 GX 1+4
264.8745 -44.4591 5.2 22.5 73.1 3.8866 2.2 5.7 4U 1735-44
270.4193 -25.1877 6.8 39.6 52.9 6.0048 1.7 9.8 GX 5-1
270.3722 -25.6787 5.6 39.1 53.2 7.4208 2.1 5.4 GRS 1758-258
275.9132 -30.5004 20.0 38.3 64.2 -2.6658 -0.6 8.0 H1820-303
263.1436 -33.8180 402.5 28.9 52.9 -0.0589 -0.0 7.8 GX 354-0
260.9411 -51.9249 2.5 16.9 89.9 7.2464 4.7 ------ UNKNOWN
219.1856 -19.8407 2.9 35.1 -29.8 6.7385 4.0 ------ UNKNOWN
159.0009 -48.6044 2.8 44.8 -122.3 25.8823 4.1 ------ UNKNOWN
Plot creation:
Sun Mar 1 23:32:16 EST 2026