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
232.9848 0.7722 0.0217 24.0189 -50.2456 0.7801946 8.850 TRIG_01347265
Foreground time interval of the image:
-5.572 23.812 (delta_t = 29.384 [sec])
Background time interval of the image:
-93.003 -5.572 (delta_t = 87.431 [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 5.504000
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 5.504000
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 5.504000
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 -5.572 sec. to 23.812 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.50998 ( -0.438349 0.437459 )
Norm@50keV : 1.31418E-03 ( -0.000275236 0.000270985 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.66 using 59 bins.
Reduced chi-squared = 0.958947
# Null hypothesis probability of 5.63e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 29.38 sec: 0.164512 ( -0.035552 0.035792 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.65731e-07 ( -8.32941e-08 8.47037e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -5.572 sec. to 23.812 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.29281 ( -0.873624 0.366785 )
Epeak [keV] : 351.470 ( )
Norm@50keV : 2.08095E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.79 using 59 bins.
Reduced chi-squared = 0.924821
# Null hypothesis probability of 6.35e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 29.38 sec: 0.167530 ( -0.039089 0.033264 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.07086e-07 ( -1.11778e-07 8.24423e-08 ) ergs/cm2
Band function
Time interval is from -5.572 sec. to 23.812 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] : 16.1724 (-5.69239 10.5489)
R^2/D10^2 : 1.29897E-02 (-0.0102003 0.0470612)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 67.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.56e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.059e-08 1.015e-08
25- 50 8.743e-08 4.021e-08
50-150 1.605e-07 8.301e-08
15-150 2.685e-07 1.020e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.357 (-109.719 -199.361)
Norm : 0.665295 (-0.13642 0.136702)
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.99 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.13e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.867e-08 2.825e-08
25- 50 9.363e-08 5.374e-08
50-150 2.053e-07 1.176e-07
15-150 3.477e-07 1.976e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.86325 (-3.26615 3.90832)
R1^2/D10^2 : 0.234452 (-0.185804 3.4314)
kT2 [keV] : 53.8996 (-30.9445 -54.6596)
R2^2/D10^2 : 3.02162E-04 (-0.00026324 0.00239809)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.26 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.41e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.370e-08 3.176e-08
25- 50 8.676e-08 4.914e-08
50-150 2.661e-07 1.461e-07
15-150 4.065e-07 2.145e-07
Peak spectrum fit
Power-law model
Time interval is from 3.156 sec. to 4.156 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.28750 ( -0.803517 0.71519 )
Norm@50keV : 4.13862E-03 ( -0.00150195 0.00147744 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.51 using 59 bins.
Reduced chi-squared = 0.780877
# Null hypothesis probability of 8.86e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.492630 ( -0.18995 0.193573 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.1028e-08 ( -1.54833e-08 1.57317e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 3.156 sec. to 4.156 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.70586 ( -2.36787 -3.69939 )
Epeak [keV] : 414.658 ( )
Norm@50keV : 2.82244E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.76 using 59 bins.
Reduced chi-squared = 0.781429
# Null hypothesis probability of 8.83e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.496166 ( -0.194705 0.191301 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.12867e-08 ( -1.79774e-08 1.76764e-08 ) ergs/cm2
Band function
Time interval is from 3.156 sec. to 4.156 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] : 15.1935 (-6.07344 27.207)
R^2/D10^2 : 5.28289E-02 (-0.0517491 0.270059)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 47.68 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.06e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.548e-09 1.722e-09
25- 50 1.024e-08 6.370e-09
50-150 1.618e-08 1.136e-08
15-150 2.897e-08 1.831e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-199.363 -199.363)
Norm : 2.07670 (-0.751572 0.751597)
------------------------------------------------------------
#Fit statistic : Chi-Squared 45.22 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.70e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.171e-09 3.212e-09
25- 50 9.948e-09 6.175e-09
50-150 2.182e-08 1.377e-08
15-150 3.693e-08 2.299e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.235885 (-0.335975 2.34698)
R1^2/D10^2 : 2.10434E+22 (-2.22285e+22 -2.22312e+22)
kT2 [keV] : 17.3168 (-7.37439 38.1127)
R2^2/D10^2 : 3.28249E-02 (-0.031658 0.178449)
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.43 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.70e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.972e-09 1.404e-09
25- 50 8.981e-09 5.515e-09
50-150 1.897e-08 1.325e-08
15-150 3.092e-08 1.990e-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: 1.50998 ( -0.438349 0.437459 )
Norm@50keV : 1.31418E-03 ( -0.000275236 0.000270985 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.66 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.63e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 29.38 sec: 0.164508 ( -0.0355501 0.0357884 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.65681e-07 ( -8.32632e-08 8.47589e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.29248 ( -0.873494 0.366695 )
Epeak [keV] : 351.408 ( )
Norm@50keV : 2.08161E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.35e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 29.38 sec: 0.164769 ( -0.035322 0.035445 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.63407e-07 ( -8.01248e-08 8.51491e-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) = 9.08e-08
S(50-100 keV) = 1.28e-07
T90 vs. Hardness ratio plot
T90 = 26.6200000047684 sec.
Hardness ratio (energy fluence ratio) = 1.40969
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.972435
Count Ratio (50-100 keV) / (15-25 keV) = 0.780365
Mask shadow pattern
IMX = 2.849757946837621E-01, IMY = 3.425930300902919E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 5.504000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 5.504000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 5.504000
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:
-93.003400 -5.572000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0013 -15.6451 0.4 5.7 -94.0 5.9770 32.2 1.3 Sco X-1
254.3406 35.2061 5.4 50.7 2.5 -0.9837 -2.1 10.0 Her X-1
256.0989 -37.7213 25.4 22.8 168.3 -0.0908 -0.5 9.1 4U 1700-377
256.5161 -36.4566 6.4 21.6 166.7 0.3478 1.8 4.4 GX 349+2
262.9162 -24.6039 179.4 14.5 130.0 -0.0122 -0.1 9.9 GX 1+4
264.7163 -44.4372 21.5 31.3 159.8 -0.1325 -0.5 1.4 4U 1735-44
268.2309 -1.5945 0.0 22.0 51.6 0.4363 1.9 11.8 SW J1753.5-0127
270.2051 -24.9443 5.7 20.4 119.8 0.4544 2.0 9.2 GX 5-1
270.4097 -25.8697 6.6 21.0 121.9 0.4009 1.7 9.6 GRS 1758-258
274.0036 -14.0264 241.7 22.4 88.4 -0.0129 -0.0 0.6 GX 17+2
275.7595 -30.3901 6.4 27.2 126.6 -0.5248 -1.8 8.7 H1820-303
285.1348 -24.9410 6.8 33.4 111.0 -0.6395 -1.7 5.5 HT1900.1-2455
262.8130 -33.7324 8.8 21.2 150.7 0.2734 1.3 10.7 GX 354-0
291.5657 -47.9212 2.5 46.6 142.0 3.6279 4.7 ------ UNKNOWN
224.9895 -8.5667 3.0 26.3 -78.9 0.9177 3.9 ------ UNKNOWN
220.8340 -32.5643 3.4 32.2 -128.6 0.9379 3.4 ------ UNKNOWN
221.1849 -28.7513 2.8 30.5 -122.0 1.0849 4.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-5.572000 23.812000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9864 -15.5072 4.2 5.7 -92.6 0.1968 2.8 8.0 Sco X-1
254.4035 35.3045 6.6 50.8 2.6 0.3837 1.7 3.5 Her X-1
256.0628 -37.8690 7.1 22.9 168.5 -0.1322 -1.6 3.9 4U 1700-377
256.6079 -36.2678 0.0 21.4 166.3 -0.0888 -1.1 12.5 GX 349+2
263.1449 -24.8393 10.5 14.8 130.3 0.0889 1.1 9.3 GX 1+4
264.9283 -44.4728 3.8 31.4 159.6 -0.2949 -3.0 8.1 4U 1735-44
268.5178 -1.5100 4.2 22.2 51.9 0.2537 2.7 9.6 SW J1753.5-0127
270.2842 -25.0792 2700.0 20.5 120.1 0.0002 0.0 0.0 GX 5-1
270.3025 -25.7431 8.3 20.8 121.7 0.1235 1.4 0.0 GRS 1758-258
274.1473 -13.8859 0.0 22.5 88.0 0.2502 2.4 12.2 GX 17+2
275.7892 -30.2597 17.5 27.2 126.3 -0.0701 -0.7 9.5 H1820-303
285.2105 -24.9910 14.4 33.5 111.1 0.1256 0.8 10.4 HT1900.1-2455
263.1669 -33.9680 0.0 21.6 150.4 -0.1130 -1.5 11.9 GX 354-0
232.9848 0.7722 1.3 24.0 -50.2 0.7802 8.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
119.596590 404.896650
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9804 -15.6427 0.3 20.2 138.1 19.3333 35.0 0.2 Sco X-1
254.3288 35.4544 9.3 39.9 20.7 -1.0920 -1.2 9.2 Her X-1
256.0770 -37.9661 64.1 44.2 147.0 0.3044 0.2 8.5 4U 1700-377
256.2957 -36.4559 15.1 43.0 145.5 1.2651 0.8 7.0 GX 349+2
262.8947 -24.8783 4.5 38.6 127.0 -4.0637 -2.6 10.1 GX 1+4
268.2193 -1.4327 14.0 35.2 86.8 1.1178 0.8 9.0 SW J1753.5-0127
262.8258 -33.8814 8.6 44.5 137.2 -2.6310 -1.3 8.6 GX 354-0
206.6827 -26.6601 2.5 37.4 -145.9 3.5669 4.6 ------ UNKNOWN
209.4238 30.4247 2.5 37.2 -41.7 3.4733 4.5 ------ UNKNOWN
191.3858 -17.0225 2.5 44.8 -122.2 9.7859 4.5 ------ UNKNOWN
Plot creation:
Sun Mar 1 23:26:52 EST 2026