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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
297.3758 +30.2773 0.0451 12.2 -42.4 0.3356 4.3 TRIG_00573667
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [sec])
Background time interval of the image:
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
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
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 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.17242 ( -0.50296 0.606306 )
Norm@50keV : 2.74338E-04 ( -0.000117808 0.00011881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.19 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 57 degrees of freedom
# Null hypothesis probability = 1.894049e-01
Photon flux (15-150 keV) in 64 sec: 4.47785E-02 ( -0.0139341 0.0139826 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.64756e-07 ( -6.08779e-08 6.68717e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -5.09815 ( )
Epeak [keV] : 34.6768 ( -6.49848 6.34925 )
Norm@50keV : 9.20721 ( -8.80316 11778.1 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.53 using 59 PHA bins.
# Reduced chi-squared = 1.045 for 56 degrees of freedom
# Null hypothesis probability = 3.827073e-01
Photon flux (15-150 keV) in 64 sec: 4.18836E-02 ( -0.0136065 0.0135499 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.34759e-07 ( -4.05984e-08 4.43622e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.51690 ( -4.53249 -4.5169 )
beta : -9.37167 ( 9.37167 19.3321 )
Epeak [keV] : 34.9550 ( -6.02915 5.96978 )
Norm@50keV : 3.86775 ( -1.06539 21.7197 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.53 using 59 PHA bins.
# Reduced chi-squared = 1.064 for 55 degrees of freedom
# Null hypothesis probability = 3.470634e-01
Photon flux (15-150 keV) in 64 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] : 8.68965 (-1.80258 2.24479)
R^2/D10^2 : 4.15308E-02 (-0.0252326 0.0610407)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.40 using 59 PHA bins.
# Reduced chi-squared = 1.042 for 57 degrees of freedom
# Null hypothesis probability = 3.882183e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.833e-08 2.192e-08
25- 50 7.706e-08 4.168e-08
50-150 2.637e-08 1.924e-08
15-150 1.418e-07 8.637e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 41.3452 (-19.2475 55.0496)
Norm : 0.296101 (-0.119236 0.197004)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.68 using 59 PHA bins.
# Reduced chi-squared = 1.117 for 57 degrees of freedom
# Null hypothesis probability = 2.530347e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.399e-08 2.045e-08
25- 50 5.870e-08 3.281e-08
50-150 4.707e-08 3.587e-08
15-150 1.498e-07 9.507e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.147782 (-0.147782 -0.147782)
R1^2/D10^2 : 1.10788E-03 (-0.00110788 -0.00110788)
kT2 [keV] : 8.68924 (-1.8027 2.24471)
R2^2/D10^2 : 4.15381E-02 (-0.0252335 0.0610398)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.40 using 59 PHA bins.
# Reduced chi-squared = 1.080 for 55 degrees of freedom
# Null hypothesis probability = 3.184537e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.17242 ( -0.50296 0.606306 )
Norm@50keV : 2.74338E-04 ( -0.000117808 0.00011881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.19 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 57 degrees of freedom
# Null hypothesis probability = 1.894049e-01
Photon flux (15-150 keV) in 64 sec: 4.47785E-02 ( -0.0139341 0.0139826 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.64756e-07 ( -6.08779e-08 6.68717e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -5.09815 ( )
Epeak [keV] : 34.6768 ( -6.49848 6.34925 )
Norm@50keV : 9.20721 ( -8.80316 11763.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.53 using 59 PHA bins.
# Reduced chi-squared = 1.045 for 56 degrees of freedom
# Null hypothesis probability = 3.827073e-01
Photon flux (15-150 keV) in 64 sec: 4.18836E-02 ( -0.0136065 0.0135499 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.34759e-07 ( -4.05984e-08 4.43622e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.51690 ( -4.53249 -4.5169 )
beta : -9.37167 ( 9.37167 19.3321 )
Epeak [keV] : 34.9550 ( -6.02915 5.96978 )
Norm@50keV : 3.86775 ( -1.06539 21.7197 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.53 using 59 PHA bins.
# Reduced chi-squared = 1.064 for 55 degrees of freedom
# Null hypothesis probability = 3.470634e-01
Photon flux (15-150 keV) in 64 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] : 8.68965 (-1.80258 2.24479)
R^2/D10^2 : 4.15308E-02 (-0.0252326 0.0610407)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.40 using 59 PHA bins.
# Reduced chi-squared = 1.042 for 57 degrees of freedom
# Null hypothesis probability = 3.882183e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.833e-08 2.337e-08
25- 50 7.706e-08 4.522e-08
50-150 2.637e-08 2.038e-08
15-150 1.418e-07 8.803e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 41.3452 (-19.2475 55.0496)
Norm : 0.296101 (-0.119236 0.197004)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.68 using 59 PHA bins.
# Reduced chi-squared = 1.117 for 57 degrees of freedom
# Null hypothesis probability = 2.530347e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.399e-08 2.378e-08
25- 50 5.870e-08 3.312e-08
50-150 4.707e-08 3.841e-08
15-150 1.498e-07 9.870e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.147782 (-0.147782 -0.147782)
R1^2/D10^2 : 1.10788E-03 (-0.00110788 -0.00110788)
kT2 [keV] : 8.68924 (-1.8027 2.24471)
R2^2/D10^2 : 4.15381E-02 (-0.0252335 0.0610398)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.40 using 59 PHA bins.
# Reduced chi-squared = 1.080 for 55 degrees of freedom
# Null hypothesis probability = 3.184537e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 2.17242 ( -0.50296 0.606306 )
Norm@50keV : 2.74338E-04 ( -0.000117808 0.00011881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.19 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 57 degrees of freedom
# Null hypothesis probability = 1.894049e-01
Photon flux (15-150 keV) in 64 sec: 4.47785E-02 ( -0.0139341 0.0139826 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.64756e-07 ( -6.08779e-08 6.68717e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -5.09815 ( )
Epeak [keV] : 34.6768 ( -6.49848 6.34925 )
Norm@50keV : 9.20721 ( -8.80316 11766.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.53 using 59 PHA bins.
# Reduced chi-squared = 1.045 for 56 degrees of freedom
# Null hypothesis probability = 3.827073e-01
Photon flux (15-150 keV) in 64 sec: 4.18836E-02 ( -0.0136065 0.0135499 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.34759e-07 ( -4.05984e-08 4.43622e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.51690 ( -4.53249 -4.5169 )
beta : -9.37167 ( 9.37167 19.3321 )
Epeak [keV] : 34.9550 ( -6.02915 5.96978 )
Norm@50keV : 3.86775 ( -1.06539 21.7197 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.53 using 59 PHA bins.
# Reduced chi-squared = 1.064 for 55 degrees of freedom
# Null hypothesis probability = 3.470634e-01
Photon flux (15-150 keV) in 64 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) = 5.18167e-08
S(50-100 keV) = 4.6108e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.889829
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.05593
Count Ratio (50-100 keV) / (15-25 keV) = -0.17126
Mask shadow pattern
IMX = 1.599504026064012E-01, IMY = 1.462375371583652E-01
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
268.3147 -1.4931 7.9 43.0 -121.9 0.3734 1.5 4.0 SW J1753.5-0127
274.1084 -14.0993 4.2 46.8 -140.8 0.5429 2.7 7.1 GX 17+2
275.8173 -30.3888 39.9 58.7 -154.9 -0.1606 -0.3 5.7 H1820-303
285.0889 -24.9323 8.5 50.0 -160.4 0.2613 1.4 3.0 HT1900.1-2455
288.7827 10.9656 1.4 19.1 -123.5 0.6932 8.0 1.5 GRS 1915+105
299.5595 35.1662 2.1 15.5 -25.1 0.4220 5.5 2.6 Cyg X-1
308.1226 40.9870 2.0 20.3 -0.4 0.4544 5.8 2.1 Cyg X-3
326.1655 38.3229 344.8 24.8 35.1 -0.0030 -0.0 0.3 Cyg X-2
337.6939 72.8546 2.8 55.1 5.6 1.4998 4.1 ------ UNKNOWN
281.7643 -1.3013 2.4 32.3 -135.4 0.5109 4.8 ------ UNKNOWN
269.3863 -17.5331 2.9 52.4 -139.6 1.6870 4.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
450.300600 603.130000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.6326 -60.5934 11.0 43.7 -119.4 -4.3749 -1.0 9.5 Cen X-3
186.7203 -62.7841 6.5 40.0 -108.9 6.8898 1.8 1.9 GX 301-2
256.2199 -37.7814 5.4 49.1 -39.3 -7.5536 -2.2 11.7 4U 1700-377
256.4323 -36.3365 7.0 50.4 -38.5 -6.9110 -1.6 5.2 GX 349+2
264.7595 -44.5918 7.1 40.5 -34.1 2.9559 1.6 8.5 4U 1735-44
270.2192 -25.1025 10.3 57.7 -20.5 6.4746 1.1 3.8 GX 5-1
270.4714 -25.5895 0.0 57.2 -20.4 5.0105 1.0 13.0 GRS 1758-258
275.8964 -30.4764 5.5 51.2 -16.3 -5.0456 -2.1 6.7 H1820-303
285.0169 -24.9436 10.6 54.7 -4.8 3.9282 1.1 1.7 HT1900.1-2455
262.8730 -33.7778 10.2 51.2 -31.0 -3.3788 -1.1 6.7 GX 354-0
332.2359 -41.9298 3.0 33.1 50.2 7.2138 3.9 ------ UNKNOWN
290.4217 -31.3426 3.0 47.4 -0.6 6.8556 3.9 ------ UNKNOWN
Plot creation:
Thu Nov 7 22:41:16 EST 2013