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
306.1330 -41.4798 0.0051 33.3983 -51.5482 8.0682391 38.074 TRIG_01291459
Foreground time interval of the image:
-0.024 72.933 (delta_t = 72.957 [sec])
Background time interval of the image:
-239.968 -0.024 (delta_t = 239.944 [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 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)
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 -0.024 sec. to 121.832 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.59896 ( -0.0641418 0.0641757 )
Norm@50keV : 5.66140E-03 ( -0.00019247 0.000192375 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 64.93 using 59 bins.
Reduced chi-squared = 1.13912
# Null hypothesis probability of 2.20e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 121.9 sec: 0.727306 ( -0.027431 0.027577 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.45585e-06 ( -2.29209e-07 2.29649e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.024 sec. to 121.832 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.59684 ( -0.212091 0.0818659 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 5.67505E-03 ( -0.000193106 0.000192093 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 64.94 using 59 bins.
Reduced chi-squared = 1.15964
# Null hypothesis probability of 1.93e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 121.9 sec: 0.727521 ( -0.027771 0.027354 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.45749e-06 ( -2.50323e-07 2.26003e-07 ) ergs/cm2
Band function
Time interval is from -0.024 sec. to 121.832 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] : 15.1403 ( )
R^2/D10^2 : 7.44942E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 292.85 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.97e-33 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.351e-07 2.993e-08
25- 50 1.744e-06 8.411e-08
50-150 2.732e-06 1.725e-07
15-150 4.910e-06 2.017e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 197.614 (-34.2154 -197.68)
Norm : 2.91528 (-0.100629 0.117015)
------------------------------------------------------------
#Fit statistic : Chi-Squared 70.01 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.16e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.859e-07 4.870e-08
25- 50 1.702e-06 9.752e-08
50-150 3.723e-06 7.101e-07
15-150 6.311e-06 8.515e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.38503 (-0.769335 0.796913)
R1^2/D10^2 : 0.460095 (-0.119845 0.176953)
kT2 [keV] : 35.9358 (-5.52672 8.59014)
R2^2/D10^2 : 2.84401E-03 (-0.00135426 0.00209913)
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.73 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.48e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.990e-07 7.991e-08
25- 50 1.808e-06 1.195e-07
50-150 3.843e-06 5.937e-07
15-150 6.450e-06 6.522e-07
Peak spectrum fit
Power-law model
Time interval is from 1.312 sec. to 2.312 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.972774 ( -0.080636 0.0797299 )
Norm@50keV : 9.02591E-02 ( -0.00403694 0.00402448 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.20 using 59 bins.
Reduced chi-squared = 0.985965
# Null hypothesis probability of 5.05e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.572497 ( -0.024913 0.040446 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.85712e-07 ( -4.76101e-08 4.77393e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.312 sec. to 2.312 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.968637 ( -0.14929 0.0790461 )
Epeak [keV] : 9999.35 ( -9999.36 -9999.36 )
Norm@50keV : 9.05867E-02 ( -0.0040071 0.0238292 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.24 using 59 bins.
Reduced chi-squared = 1.00429
# Null hypothesis probability of 4.66e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 10.4003 ( -0.57589 0.5692 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.8787e-07 ( -5.00705e-08 4.52244e-08 ) ergs/cm2
Band function
Time interval is from 1.312 sec. to 2.312 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] : 22.3869 ( )
R^2/D10^2 : 0.348900 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 164.14 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.59e-12 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.210e-08 2.975e-09
25- 50 1.715e-07 1.185e-08
50-150 6.423e-07 5.140e-08
15-150 8.459e-07 5.200e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 42.0360 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 199.87 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.34e-18 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.047e-07 4.900e-09
25- 50 2.014e-07 1.055e-08
50-150 4.416e-07 2.190e-08
15-150 7.476e-07 3.880e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.3589 (-1.51708 1.6895)
R1^2/D10^2 : 2.47342 (-0.834992 1.40983)
kT2 [keV] : 52.8495 (-12.2507 29.8278)
R2^2/D10^2 : 2.40473E-02 (-0.0154136 0.0252287)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.95e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.168e-08 9.135e-09
25- 50 1.941e-07 2.795e-08
50-150 7.440e-07 2.450e-07
15-150 9.997e-07 2.742e-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: 1.52125 ( -0.0652394 0.0651514 )
Norm@50keV : 7.36218E-03 ( -0.000252215 0.000252198 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.68 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.50e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 72.96 sec: 0.924440 ( -0.0352802 0.0354661 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.07841e-06 ( -1.82731e-07 1.83147e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.52237 ( -0.0696211 0.0632325 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 7.36853E-03 ( -0.000252726 0.00131781 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.73 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.11e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 72.96 sec: 0.925197 ( -0.036546 0.034224 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.07749e-06 ( -1.81437e-07 1.80109e-07 ) 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) = 1.67e-06
S(50-100 keV) = 2.21e-06
T90 vs. Hardness ratio plot
T90 = 110.551999926567 sec.
Hardness ratio (energy fluence ratio) = 1.32335
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.35468
Count Ratio (50-100 keV) / (15-25 keV) = 0.918626
Mask shadow pattern
IMX = 4.100114241387108E-01, IMY = 5.163459185955460E-01
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:
-239.968000 -0.024000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9649 -15.6317 0.6 25.7 109.5 11.0647 18.4 1.0 Sco X-1
256.0797 -37.7604 15.3 17.0 42.9 -0.3009 -0.8 6.7 4U 1700-377
256.4414 -36.4158 4.0 15.9 45.9 1.1619 2.8 0.5 GX 349+2
262.8462 -24.6821 6.6 6.8 98.7 0.6129 1.7 9.7 GX 1+4
264.5393 -44.5926 0.0 19.4 13.7 0.0173 0.0 12.2 4U 1735-44
268.4324 -1.3784 6.9 24.4 176.7 0.6894 1.7 5.9 SW J1753.5-0127
270.2736 -25.0651 2.4 0.7 179.1 1.9707 4.8 1.0 GX 5-1
270.1325 -25.5963 0.0 0.2 136.8 -0.3838 -0.9 12.7 GRS 1758-258
274.0772 -14.0457 3.8 12.2 -161.2 1.2427 3.0 4.2 GX 17+2
276.0618 -30.3733 6.7 6.9 -45.1 0.6870 1.7 7.1 H1820-303
285.0676 -25.0637 23.2 13.3 -88.5 -0.2070 -0.5 8.8 HT1900.1-2455
288.8003 10.9489 8.3 40.9 -150.3 -0.8497 -1.4 0.2 GRS 1915+105
263.1700 -33.7823 7.0 10.1 37.2 -0.6221 -1.6 9.6 GX 354-0
221.5922 -65.1140 2.2 49.9 25.7 4.8562 5.2 ------ UNKNOWN
265.0905 -37.8424 2.2 12.9 20.1 1.9223 5.2 ------ UNKNOWN
290.2278 -73.8317 2.2 49.2 -5.9 3.6110 5.2 ------ UNKNOWN
287.5247 31.5606 3.5 59.6 -161.7 11.0116 3.3 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.024000 72.932600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8129 -15.7006 6.8 25.8 109.2 -0.3081 -1.7 10.3 Sco X-1
256.1760 -37.8143 4.9 17.0 42.6 0.3116 2.3 9.2 4U 1700-377
256.2603 -36.4643 14.0 16.1 46.1 0.1067 0.8 8.8 GX 349+2
263.1793 -24.6012 0.0 6.5 99.9 0.2784 2.1 12.7 GX 1+4
264.8965 -44.3054 5.4 19.1 13.2 -0.3033 -2.1 10.9 4U 1735-44
268.2323 -1.6052 0.0 24.2 176.2 0.4345 2.9 12.3 SW J1753.5-0127
270.2680 -25.2295 16.6 0.5 177.9 -0.0992 -0.7 9.1 GX 5-1
270.3598 -25.5939 114.3 0.2 -160.7 0.0189 0.1 9.5 GRS 1758-258
273.8478 -13.9125 8.2 12.3 -162.4 -0.1879 -1.4 11.8 GX 17+2
275.9693 -30.4400 44.9 6.9 -44.3 0.0359 0.3 4.9 H1820-303
285.1786 -24.7560 0.0 13.5 -89.8 0.1074 0.7 12.6 HT1900.1-2455
288.7664 11.0246 3.2 40.9 -150.4 0.7771 3.6 5.1 GRS 1915+105
263.0433 -33.8338 56.9 10.2 37.5 -0.0293 -0.2 2.7 GX 354-0
248.3529 3.3130 2.2 36.0 141.9 1.1665 5.2 ------ UNKNOWN
294.7716 -24.6076 2.4 22.1 -86.4 0.8353 4.7 ------ UNKNOWN
306.1330 -41.4798 0.3 33.4 -51.5 8.0683 38.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
173.332600 492.832610
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2810 35.4345 6.4 40.8 103.4 -3.3058 -1.8 10.2 Her X-1
262.8996 -24.7571 8.7 54.3 18.5 -2.1519 -1.3 6.0 GX 1+4
268.4707 -1.6415 0.0 34.2 37.0 0.8067 1.0 12.9 SW J1753.5-0127
270.1923 -25.0114 6.3 50.6 11.6 -1.6527 -1.8 6.4 GX 5-1
270.2507 -25.7282 4.6 51.2 11.1 2.3073 2.5 2.9 GRS 1758-258
274.1209 -14.0790 53.2 39.4 15.8 0.1624 0.2 7.2 GX 17+2
275.8660 -30.2426 8.0 52.7 2.8 1.4849 1.4 8.1 H1820-303
285.0696 -25.0892 19.1 45.1 -5.0 -0.5267 -0.6 10.3 HT1900.1-2455
288.8696 10.8843 5.4 10.7 25.0 0.9004 2.1 5.6 GRS 1915+105
299.5814 35.2260 0.5 16.8 169.0 9.2816 22.0 1.5 Cyg X-1
308.0765 40.9341 1.6 24.4 -178.2 3.4322 7.3 1.9 Cyg X-3
326.1289 38.3072 12.3 32.4 -153.3 0.5375 0.9 2.2 Cyg X-2
299.3036 41.1034 2.4 22.6 165.8 2.2341 4.8 ------ UNKNOWN
Plot creation:
Fri Jun 20 01:50:12 EDT 2025