Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Mon Jan 20 06:55:00 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger292934
======================================================================
Trigger: 00292934 Segment: 000
BAT Trigger Time: 213090057.28 [s; MET]
Trigger Stop: 213090058.304 [s; MET]
UTC: 2007-10-03T07:40:55.014420 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 301.855657563997 Dec: 10.9597786609722 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 17.83
Image Trigger?: NO
Rate S/N Ratio: 105.73551910309 [ if not an image trigger ]
Image S/N Ratio: 17.83
Analysis Position: [ source = BAT ]
RA: 301.855657563997 Dec: 10.9597786609722 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 301.858006009158 Dec: 10.9546334702133 [deg; J2000]
{ 20h 07m 25.9s , +10d 57' 16.7" }
+/- 0.879423354569308 [arcmin] (estimated 90% radius based on SNR)
+/- 0.356959080191321 [arcmin] (formal 1-sigma fit error)
SNR: 36.5456364981517
Angular difference between the analysis and refined position is 0.338290 arcmin
Partial Coding Fraction: 0.34375 [ including projection effects ]
Duration
T90: 148.387999981642 +/- 4.61634835482968
Measured from: -1.47999998927116
to: 146.907999992371 [s; relative to TRIGTIME]
T50: 18.6520000100136 +/- 2.47665906139732
Measured from: 2.5160000026226
to: 21.1680000126362 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.372000008821487
to: 1.37200000882149 [s; relative to TRIGTIME]
Total Fluence
Measured from: -7.56799998879433
to: 167.595999985933 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.768095 4.425166 3.819234 1.192102
0.121120 0.121398 0.110544 0.103659 [error]
Peak 0.133555 0.243109 0.315384 0.115953
0.012052 0.014163 0.015695 0.013712 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 175.164 -7.568 167.596
T90 148.388 -1.480 146.908
T50 18.652 2.516 21.168
Peak 1.000 0.372 1.372
====== Spectral Analysis Summary =====================================
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^{Ph_index}
Ph_90err : 90% error of the photon index
Epeak : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm : normalization at 50 keV in both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedo
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.335 -0.062 0.062 - - - 4.86e-03 -1.54e-04 1.54e-04 53.140 57
CPL -1.332 -0.062 0.074 9998.400 -9998.400 -9998.400 4.88e-03 -1.53e-04 5.69e-04 53.170 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -0.841 -0.106 0.108 - - - 5.53e-02 -3.22e-03 3.21e-03 42.510 57
CPL -0.834 -0.107 0.329 9998.480 -9998.480 -9998.480 5.57e-02 -3.18e-03 1.97e-02 42.530 56
=== Fluence/Peak Flux Summary ===
Model Band1 Band2 Band3 Band4 Band5 Total
15-25 25-50 50-100 100-350 15-150 15-350 keV
Fluence PL 9.33e-07 1.90e-06 3.01e-06 1.06e-05 8.35e-06 1.64e-05 erg/cm2
90%_error_low -6.17e-08 -7.24e-08 -1.16e-07 -9.33e-07 -2.85e-07 -9.91e-07 erg/cm2
90%_error_hi 6.34e-08 7.21e-08 1.15e-07 9.97e-07 2.86e-07 1.04e-06 erg/cm2
Peak flux PL 1.22e+00 1.81e+00 2.03e+00 4.28e+00 6.35e+00 9.33e+00 ph/cm2/s
90%_error_low -1.52e-01 -1.38e-01 -1.24e-01 -5.73e-01 -3.66e-01 -6.29e-01 ph/cm2/s
90%_error_hi 1.60e-01 1.37e-01 1.23e-01 6.30e-01 3.66e-01 6.52e-01 ph/cm2/s
Fluence CPL 9.41e-07 1.89e-06 2.99e-06 1.11e-05 8.38e-06 1.58e-05 erg/cm2
90%_error_low -8.25e-08 -7.54e-08 -1.11e-07 -2.94e-06 -3.35e-07 -1.87e-06 erg/cm2
90%_error_hi 5.76e-08 7.71e-08 1.40e-07 -1.17e-08 2.70e-07 1.06e-06 erg/cm2
Peak flux CPL 1.21e+00 1.81e+00 2.03e+00 4.25e+00 6.35e+00 9.30e+00 ph/cm2/s
90%_error_low N/A -1.38e-01 N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A 1.37e-01 N/A N/A N/A N/A ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 301.8580 10.9546 0.0053 31.7436 57.9141 11.4289109 36.546 TRIG_00292934 Foreground time interval of the image: -7.568 124.421 (delta_t = 131.989 [sec]) Background time interval of the image: -239.280 -7.568 (delta_t = 231.712 [sec])
Light Curves
Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.
Full-time range; 1 s binning
Other quick-look light curves:
- 64 ms binning (zoomed)
- 16 ms binning (zoomed)
- 8 ms binning (zoomed)
- 2 ms binning (zoomed)
- SN=5 or 10 s binning (full-time range)
- Raw light curve
Spectra
- 64 ms binning (zoomed)
- 16 ms binning (zoomed)
- 8 ms binning (zoomed)
- 2 ms binning (zoomed)
- SN=5 or 10 s binning (full-time range)
- Raw light curve
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 -7.568 sec. to 167.596 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.33513 ( -0.0617006 0.0619154 ) Norm@50keV : 4.86468E-03 ( -0.00015442 0.000154401 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 53.14 using 59 PHA bins. # Reduced chi-squared = 0.9323 for 57 degrees of freedom # Null hypothesis probability = 6.205363e-01 Photon flux (15-150 keV) in 175.2 sec: 0.584299 ( -0.02016 0.020245 ) ph/cm2/s Energy fluence (15-150 keV) : 8.35322e-06 ( -2.85254e-07 2.85991e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -7.568 sec. to 167.596 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.3317 ( -0.0619227 0.0736273 ) Epeak [keV] : 9998.40 ( -9998.7 -9998.7 ) Norm@50keV : 4.88189E-03 ( -0.000154857 0.000567144 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 53.17 using 59 PHA bins. # Reduced chi-squared = 0.9494 for 56 degrees of freedom # Null hypothesis probability = 5.828217e-01 Photon flux (15-150 keV) in 175.2 sec: 0.586363 ( -0.030574 0.025044 ) ph/cm2/s Energy fluence (15-150 keV) : 8.38213e-06 ( -3.35126e-07 2.70221e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 0.372 sec. to 1.372 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.841377 ( -0.106099 0.107581 ) Norm@50keV : 5.52901E-02 ( -0.00322008 0.00320711 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 42.51 using 59 PHA bins. # Reduced chi-squared = 0.7458 for 57 degrees of freedom # Null hypothesis probability = 9.234892e-01 Photon flux (15-150 keV) in 1 sec: 6.34763 ( -0.3658 0.36646 ) ph/cm2/s Energy fluence (15-150 keV) : 6.35214e-07 ( -4.01687e-08 4.03243e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.372 sec. to 1.372 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.834203 ( -0.107062 0.328602 ) Epeak [keV] : 9998.48 ( -9998.71 -9998.71 ) Norm@50keV : 5.56700E-02 ( -0.00318302 0.0197362 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 42.53 using 59 PHA bins. # Reduced chi-squared = 0.7595 for 56 degrees of freedom # Null hypothesis probability = 9.077890e-01 Photon flux (15-150 keV) in 1 sec: 6.34570 ( ) ph/cm2/s Energy fluence (15-150 keV) : 6.35814e-07 ( -4.40071e-08 3.24684e-08 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 148.388 sec. Hardness ratio (energy fluence ratio) = 1.5854777875
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 2.8285986e-06 S(50-150 keV) = 5.524711e-06
The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.
Mask shadow pattern
IMX = 3.286278128282195E-01, IMY = -5.241649970967113E-01
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: -239.280000 -7.568000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9885 -15.6428 0.6 32.9 -92.6 6.8446 20.5 0.5 Sco X-1 254.4898 35.3393 6.2 51.2 -15.2 0.8476 1.9 1.6 Her X-1 255.8180 -37.8883 22.1 34.0 -137.3 0.1310 0.5 8.4 4U 1700-377 256.6218 -36.5322 3.8 32.6 -136.5 0.6937 3.0 11.1 GX 349+2 262.9904 -24.6447 3.2 20.3 -126.1 0.6867 3.7 6.1 GX 1+4 264.7656 -44.3055 11.3 35.7 -153.4 0.2221 1.0 8.7 4U 1735-44 268.4158 -1.3509 2.1 13.5 -37.8 0.9932 5.6 6.7 SW J1753.5-0127 270.2580 -25.1451 2.6 16.5 -143.4 0.7844 4.5 4.2 GX 5-1 270.4776 -25.8119 5.1 17.0 -145.1 0.4039 2.3 10.3 GRS 1758-258 273.9420 -14.0574 2.3 5.6 -119.5 0.8537 5.0 3.9 GX 17+2 275.8839 -30.4335 4.6 20.0 -163.8 0.4372 2.5 4.5 H1820-303 284.8814 -24.9534 6.7 15.7 167.5 0.2817 1.7 8.6 HT1900.1-2455 288.8041 10.9495 1.1 23.9 35.9 2.0128 10.1 0.4 GRS 1915+105 263.0334 -33.8380 2.8 27.2 -141.4 0.8468 4.1 2.2 GX 354-0 283.5865 -24.5195 3.0 14.8 171.0 0.6251 3.9 ------ UNKNOWN 282.4781 -42.4426 2.4 32.1 -175.8 1.0323 4.9 ------ UNKNOWN 267.8185 30.5885 2.7 42.4 -3.7 1.3208 4.3 ------ UNKNOWN 270.4332 -20.4853 2.7 12.5 -133.5 0.7611 4.3 ------ UNKNOWN 252.5306 41.7940 2.7 57.5 -12.8 3.9691 4.3 ------ UNKNOWN 258.5012 -66.1998 2.3 57.3 -160.7 4.6951 4.9 ------ UNKNOWN 236.6418 5.9591 2.8 44.7 -60.3 3.0598 4.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -7.568000 124.420590 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 245.1355 -15.7623 56.0 32.7 -92.9 -0.0566 -0.2 11.6 Sco X-1 254.3572 35.4682 8.6 51.3 -15.2 -0.5513 -1.3 9.0 Her X-1 255.9461 -37.9695 14.9 34.0 -137.6 -0.1619 -0.8 7.8 4U 1700-377 256.3831 -36.4775 18.1 32.7 -136.2 0.1311 0.6 4.1 GX 349+2 263.0091 -24.7458 37.6 20.4 -126.3 0.0527 0.3 0.0 GX 1+4 264.5663 -44.4712 20.5 35.9 -153.2 -0.1172 -0.6 7.7 4U 1735-44 268.3300 -1.5239 10.0 13.5 -38.6 0.1931 1.1 4.8 SW J1753.5-0127 270.2859 -25.2277 8.5 16.6 -143.6 0.2280 1.4 8.9 GX 5-1 270.2189 -25.8998 5.3 17.2 -144.5 0.3719 2.2 10.4 GRS 1758-258 273.9413 -13.8949 4.0 5.5 -118.1 0.4422 2.9 9.3 GX 17+2 275.8502 -30.4935 3.8 20.1 -163.8 -0.5033 -3.1 8.5 H1820-303 285.0460 -24.7996 7.3 15.6 166.8 0.2617 1.6 7.3 HT1900.1-2455 288.7504 10.9245 5.1 23.8 35.8 0.4282 2.3 3.1 GRS 1915+105 262.8767 -33.7923 6.9 27.2 -141.1 -0.2947 -1.7 6.2 GX 354-0 301.8580 10.9546 0.3 31.7 57.9 11.4253 36.5 ------ UNKNOWN 293.4995 33.5633 2.4 46.4 27.3 2.5786 4.8 ------ UNKNOWN 262.1638 32.8993 2.8 46.1 -9.1 1.1913 4.1 ------ UNKNOWN 273.6470 -61.2439 2.7 50.8 -167.2 1.5741 4.2 ------ UNKNOWN 262.7278 -63.4969 2.5 54.1 -161.6 2.1166 4.6 ------ UNKNOWN 247.4020 27.3032 2.6 48.3 -27.9 1.5949 4.3 ------ UNKNOWN 236.8574 -25.5810 3.7 42.0 -106.8 2.4369 3.8 ------ UNKNOWN UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 161.820600 723.220590 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 255.9015 -37.9522 11.7 44.7 -121.9 1.4416 1.0 7.6 4U 1700-377 256.4540 -36.3769 6.8 43.6 -120.2 2.2267 1.7 2.9 GX 349+2 262.9857 -24.7073 10.4 33.7 -106.7 0.6716 1.1 2.6 GX 1+4 264.9576 -44.6119 0.0 43.1 -135.4 -1.4286 -1.9 13.4 4U 1735-44 268.2524 -1.4687 2.5 27.9 -60.6 1.8913 4.6 7.0 SW J1753.5-0127 270.2523 -25.1472 2.5 27.9 -112.8 2.0824 4.7 4.4 GX 5-1 270.2284 -25.6854 9.4 28.1 -113.8 0.5809 1.3 5.3 GRS 1758-258 274.0069 -13.9917 1.5 20.8 -89.7 3.0223 7.8 2.7 GX 17+2 275.9245 -30.3236 4.5 26.9 -128.4 1.0755 2.6 2.6 H1820-303 284.9370 -24.9669 5.6 17.7 -135.5 0.7100 2.1 6.1 HT1900.1-2455 288.8246 10.9353 0.8 21.9 -3.2 5.3812 15.2 1.7 GRS 1915+105 299.5929 35.2080 0.4 45.5 18.5 24.4007 28.3 0.4 Cyg X-1 262.9962 -33.8020 4.0 37.7 -120.8 1.8801 2.9 2.0 GX 354-0 281.4515 11.2998 2.3 25.2 -19.3 1.7058 5.1 ------ UNKNOWN 277.3797 -23.8045 1.6 21.7 -118.4 2.3997 7.1 ------ UNKNOWN