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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
237.7212 -54.3007 0.0090 22.0 19.5 0.1707 21.5 TRIG_00558399
------------------------------------------
Foreground time interval of the image:
-0.004 0.152 (delta_t = 0.156 [sec])
Background time interval of the image:
-239.944 -0.004 (delta_t = 239.940 [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 0.016000
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 0.016000
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 0.016000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
The mask-weighted light curves based on cleaned DPHs
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 -0.004 sec. to 0.152 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.15976 ( )
Norm@50keV : 4.58098E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 138.22 using 59 PHA bins.
# Reduced chi-squared = 2.4249 for 57 degrees of freedom
# Null hypothesis probability = 1.068270e-08
Photon flux (15-150 keV) in 0.156 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.004 sec. to 0.152 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.54426 ( -0.981564 0.812405 )
Epeak [keV] : 46.2282 ( -2.8731 2.92657 )
Norm@50keV : 4.39127 ( -2.7292 10.037 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.04 using 59 PHA bins.
# Reduced chi-squared = 0.8936 for 56 degrees of freedom
# Null hypothesis probability = 6.987513e-01
Photon flux (15-150 keV) in 0.156 sec: 8.03826 ( -0.69191 0.69308 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.71716e-08 ( -6.83951e-09 6.85854e-09 ) ergs/cm2
Band function
Time interval is from -0.004 sec. to 0.152 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.54658 ( -1.0688 0.810117 )
beta : -9.98140 ( 9.9814 19.9768 )
Epeak [keV] : 46.2170 ( -2.86912 2.91866 )
Norm@50keV : 4.40599 ( -2.74073 10.7683 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.04 using 59 PHA bins.
# Reduced chi-squared = 0.9099 for 55 degrees of freedom
# Null hypothesis probability = 6.640720e-01
Photon flux (15-150 keV) in 0.156 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] : 11.9322 (-0.742377 0.754825)
R^2/D10^2 : 2.41820 (-0.514823 0.659663)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.46 using 59 PHA bins.
# Reduced chi-squared = 0.8677 for 57 degrees of freedom
# Null hypothesis probability = 7.507043e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.135e-08 1.396e-09
25- 50 3.550e-08 3.159e-09
50-150 3.027e-08 5.257e-09
15-150 7.712e-08 7.348e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 58.3149 (-8.53166 9.77768)
Norm : 43.9462 (-4.99719 5.11679)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 97.19 using 59 PHA bins.
# Reduced chi-squared = 1.705 for 57 degrees of freedom
# Null hypothesis probability = 7.213484e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.715e-08 1.942e-09
25- 50 2.587e-08 2.348e-09
50-150 2.874e-08 4.532e-09
15-150 7.176e-08 6.739e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.99910 (-1.99649 11.0042)
R1^2/D10^2 : 980.298 (-993.436 -993.436)
kT2 [keV] : 12.1324 (-0.802067 0.870255)
R2^2/D10^2 : 2.23089 (-0.578476 0.596903)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.91 using 59 PHA bins.
# Reduced chi-squared = 0.8711 for 55 degrees of freedom
# Null hypothesis probability = 7.399502e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.224e-08 2.102e-09
25- 50 3.461e-08 4.173e-09
50-150 3.082e-08 5.148e-09
15-150 7.767e-08 7.511e-09
Peak spectrum fit
Power-law model
Time interval is from -0.424 sec. to 0.576 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.62953 ( -0.186893 0.191834 )
Norm@50keV : 1.07475E-02 ( -0.00142108 0.00140972 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.76 using 59 PHA bins.
# Reduced chi-squared = 1.224 for 57 degrees of freedom
# Null hypothesis probability = 1.194419e-01
Photon flux (15-150 keV) in 1 sec: 1.39402 ( -0.174797 0.174927 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.00178e-07 ( -1.39082e-08 1.40677e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.424 sec. to 0.576 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.754973 ( -1.57543 1.16659 )
Epeak [keV] : 52.8943 ( -6.82019 11.1721 )
Norm@50keV : 0.206173 ( -0.212003 1.23665 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.16 using 59 PHA bins.
# Reduced chi-squared = 0.9672 for 56 degrees of freedom
# Null hypothesis probability = 5.447122e-01
Photon flux (15-150 keV) in 1 sec: 1.32542 ( -0.17825 0.17848 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from -0.424 sec. to 0.576 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.772421 ( -1.04858 1.32718 )
beta : -9.99994 ( 9.99994 19.9998 )
Epeak [keV] : 52.8169 ( -6.41645 11.1552 )
Norm@50keV : 0.211082 ( -0.211082 1.22139 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.16 using 59 PHA bins.
# Reduced chi-squared = 0.9848 for 55 degrees of freedom
# Null hypothesis probability = 5.066529e-01
Photon flux (15-150 keV) in 1 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] : 13.0737 (-1.41493 1.61215)
R^2/D10^2 : 0.282359 (-0.0991131 0.14668)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.90 using 59 PHA bins.
# Reduced chi-squared = 0.9631 for 57 degrees of freedom
# Null hypothesis probability = 5.544350e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.024e-08 2.335e-09
25- 50 3.547e-08 5.505e-09
50-150 3.845e-08 9.505e-09
15-150 8.415e-08 1.343e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 135.146 (-48.7434 -133.49)
Norm : 5.94728 (-0.758258 0.989945)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.20 using 59 PHA bins.
# Reduced chi-squared = 1.126 for 57 degrees of freedom
# Null hypothesis probability = 2.389046e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.539e-08 3.796e-09
25- 50 2.809e-08 9.960e-09
50-150 5.301e-08 3.121e-08
15-150 9.649e-08 4.364e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.20 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.16 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.14 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.03 using 59 PHA bins.
# Reduced chi-squared = 0.9854 for 55 degrees of freedom
# Reduced chi-squared = 0.9847 for 55 degrees of freedom
# Reduced chi-squared = 0.9843 for 55 degrees of freedom
# Reduced chi-squared = 0.9824 for 55 degrees of freedom
# Null hypothesis probability = 5.052746e-01
# Null hypothesis probability = 5.068615e-01
# Null hypothesis probability = 5.075518e-01
# Null hypothesis probability = 5.116534e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.150e-08 3.410e-09
25- 50 3.418e-08 9.160e-09
50-150 4.001e-08 1.144e-08
15-150 8.570e-08 1.947e-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: 2.15976 ( )
Norm@50keV : 4.58098E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 138.22 using 59 PHA bins.
# Reduced chi-squared = 2.4249 for 57 degrees of freedom
# Null hypothesis probability = 1.068270e-08
Photon flux (15-150 keV) in 0.156 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.54426 ( -0.981564 0.812405 )
Epeak [keV] : 46.2282 ( -2.8731 2.92657 )
Norm@50keV : 4.39127 ( -2.7292 10.037 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.04 using 59 PHA bins.
# Reduced chi-squared = 0.8936 for 56 degrees of freedom
# Null hypothesis probability = 6.987513e-01
Photon flux (15-150 keV) in 0.156 sec: 8.03826 ( -0.69191 0.69308 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.71716e-08 ( -6.83951e-09 6.85854e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.54658 ( -1.0688 0.810117 )
beta : -9.98140 ( 9.9814 19.9768 )
Epeak [keV] : 46.2170 ( -2.86912 2.91866 )
Norm@50keV : 4.40599 ( -2.74073 10.7683 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.04 using 59 PHA bins.
# Reduced chi-squared = 0.9099 for 55 degrees of freedom
# Null hypothesis probability = 6.640720e-01
Photon flux (15-150 keV) in 0.156 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) =
S(50-100 keV) =
T90 vs. Hardness ratio plot
T90 = 0.13999992609024 sec.
Hardness ratio (energy fluence ratio) =
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.84924
Count Ratio (50-100 keV) / (15-25 keV) = 0.817945
Mask shadow pattern
IMX = 0, IMY = 0
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
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:
-239.944000 -0.004000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3921 -60.5022 6.3 40.3 -43.4 0.6977 1.8 7.6 Cen X-3
186.6412 -62.8219 3.5 33.7 -35.7 0.9125 3.3 3.1 GX 301-2
256.2174 -37.7362 0.0 32.1 61.0 -0.2014 -0.5 12.7 4U 1700-377
256.4350 -36.4175 3.2 33.4 61.8 1.5671 3.6 0.3 GX 349+2
264.7631 -44.3019 9.4 24.4 71.7 0.3548 1.2 8.9 4U 1735-44
275.7880 -30.5167 0.0 37.7 90.6 0.5268 0.6 11.4 H1820-303
263.1832 -33.7065 0.0 35.1 72.3 0.6739 1.2 12.4 GX 354-0
186.7418 -50.5032 2.9 43.5 -23.6 1.4237 3.9 ------ UNKNOWN
9.9797 -35.2149 3.2 59.5 -161.7 7.1259 3.6 ------ UNKNOWN
16.8809 -38.4862 2.4 58.9 -154.2 8.4455 4.8 ------ UNKNOWN
145.2156 -62.1078 3.4 44.8 -60.1 3.6468 3.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.004000 0.152000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1463 -60.6845 8.7 40.2 -43.7 -0.0181 -1.3 6.2 Cen X-3
186.3668 -62.8488 3.8 33.8 -35.9 -0.0294 -3.0 9.2 GX 301-2
256.0045 -37.8556 4.9 32.0 60.6 0.0307 2.4 1.1 4U 1700-377
256.6599 -36.3129 0.0 33.4 62.2 -0.0223 -1.5 12.7 GX 349+2
264.9051 -44.3158 5.8 24.4 72.0 0.0205 2.0 10.6 4U 1735-44
276.0085 -30.3490 21.6 37.8 90.9 0.0151 0.5 4.5 H1820-303
263.1474 -33.8268 5.6 35.0 72.2 -0.0365 -2.1 7.9 GX 354-0
310.7837 -46.6428 1.9 28.2 147.9 0.0558 6.0 ------ UNKNOWN
237.7212 -54.3007 0.5 22.0 19.5 0.1706 21.5 ------ UNKNOWN
91.9407 -70.9805 1.9 40.8 -92.3 0.1618 6.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
55.156590 133.366000
134.056000 325.336000
326.056000 962.195600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.5733 -60.5256 8.5 35.1 -83.5 2.2764 1.4 9.6 Cen X-3
186.7406 -62.8111 7.6 27.1 -84.4 1.4988 1.5 3.4 GX 301-2
244.9978 -15.6266 0.9 39.1 55.6 23.7132 12.6 1.3 Sco X-1
255.8482 -37.7545 9.2 20.6 88.7 0.9610 1.3 8.5 4U 1700-377
256.3954 -36.4049 1.9 22.0 87.8 5.2216 6.1 2.2 GX 349+2
262.8509 -24.7496 6.5 34.9 86.8 3.0028 1.8 8.6 GX 1+4
264.8749 -44.3311 9.2 20.1 116.0 -0.7825 -1.3 9.1 4U 1735-44
270.4176 -25.0973 15.3 37.9 97.2 -1.6736 -0.7 7.3 GX 5-1
270.4417 -25.7521 7.1 37.3 97.8 -3.3289 -1.6 7.5 GRS 1758-258
275.8353 -30.3472 7.9 36.2 108.7 2.5415 1.5 4.8 H1820-303
262.7652 -33.9049 0.0 26.9 95.4 1.7550 1.7 11.9 GX 354-0
229.3950 -33.0101 2.9 22.1 25.6 2.7087 4.0 ------ UNKNOWN
299.2214 -60.1665 3.4 32.6 170.1 2.7520 3.4 ------ UNKNOWN
187.4042 -42.5398 3.3 34.5 -46.9 2.8540 3.5 ------ UNKNOWN
8.9575 -59.7544 5.2 59.5 -161.7 15.3707 2.2 ------ UNKNOWN
173.9673 -30.4563 3.8 50.6 -44.6 13.4459 3.1 ------ UNKNOWN
Plot creation:
Mon Jul 8 00:26:51 EDT 2013