====================================================================== BAT GRB EVENT DATA PROCESSING REPORT Process Script Ver: batgrbproduct v2.46 Process Start Time: Mon Jan 20 10:38:47 EST 2014 Host Name: batevent1 Current Working Dir: /local/data/batevent/batevent_reproc/trigger276205 ====================================================================== Trigger: 00276205 Segment: 000 BAT Trigger Time: 198669568 [s; MET] Trigger Stop: 198669632 [s; MET] UTC: 2007-04-19T09:59:26.099880 [includes UTCF correction] Where From?: TDRSS position message BAT RA: 182.714045406784 Dec: 39.908351699379 [deg; J2000] Catalogged Source?: NO Point Source?: YES GRB Indicated?: YES [ by BAT flight software ] Image S/N Ratio: 10.8 Image Trigger?: YES Rate S/N Ratio: 0 [ if not an image trigger ] Image S/N Ratio: 10.8 Analysis Position: [ source = BAT ] RA: 182.714045406784 Dec: 39.908351699379 [deg; J2000] Refined Position: [ source = BAT pre-slew burst ] RA: 182.751768813539 Dec: 39.8992224189556 [deg; J2000] { 12h 11m 00.4s , +39d 53' 57.2" } +/- 2.34769878819012 [arcmin] (estimated 90% radius based on SNR) +/- 1.14157964187767 [arcmin] (formal 1-sigma fit error) SNR: 8.98730067972945 Angular difference between the analysis and refined position is 1.820661 arcmin Partial Coding Fraction: 1 [ including projection effects ] Duration T90: 160 +/- 50.5964425626941 Measured from: -31 to: 129 [s; relative to TRIGTIME] T50: 80 +/- 22.6274169979695 Measured from: 1 to: 81 [s; relative to TRIGTIME] Fluence Peak Flux (peak 1 second) Measured from: 24.5 to: 25.5 [s; relative to TRIGTIME] Total Fluence Measured from: -31 to: 161 [s; relative to TRIGTIME] Band 1 Band 2 Band 3 Band 4 15-25 25-50 50-100 100-350 keV Total 0.654622 0.620752 0.136435 0.122572 0.059748 0.061548 0.053718 0.046285 [error] Peak 0.008659 -0.000812 -0.000703 -0.002258 0.004296 0.004488 0.003841 0.003277 [error] [ fluence units of on-axis counts / fully illuminated detector ] ====================================================================== ====== Table of the duration information ============================= Value tstart tstop T100 192.000 -31.000 161.000 T90 160.000 -31.000 129.000 T50 80.000 1.000 81.000 Peak 1.000 24.500 25.500 ====== 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 -2.372 -0.257 0.234 - - - 3.58e-04 -6.80e-05 6.75e-05 45.980 57 CPL -0.839 -1.070 1.553 26.477 -22.416 7.141 3.43e-03 -3.43e-03 3.14e-02 41.380 56 === 1-s peak spectral analysis === (Best model with acceptable fit: N/A) 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 -4.286 4.286 4.286 - - - 7.01e-05 -7.01e-05 6.59e-04 65.800 57 CPL -1.224 -1.317 1.224 4.920 4.751 20.865 3.19e-02 -3.19e-02 1.50e+11 65.410 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 2.01e-07 2.18e-07 1.68e-07 2.13e-07 6.67e-07 8.00e-07 erg/cm2 90%_error_low -2.83e-08 -2.88e-08 -4.17e-08 -8.56e-08 -9.87e-08 -1.51e-07 erg/cm2 90%_error_hi 2.86e-08 2.83e-08 4.49e-08 1.19e-07 1.03e-07 1.76e-07 erg/cm2 Peak flux PL 4.56e-02 9.55e-03 1.00e-03 1.16e-04 5.62e-02 5.63e-02 ph/cm2/s 90%_error_low -4.56e-02 -9.55e-03 -1.00e-03 -1.16e-04 -5.62e-02 -5.63e-02 ph/cm2/s 90%_error_hi 5.72e-02 3.11e-02 1.78e-02 1.37e-01 8.40e-02 8.48e-02 ph/cm2/s Fluence CPL 1.90e-07 2.52e-07 1.25e-07 1.73e-08 5.82e-07 5.84e-07 erg/cm2 90%_error_low -3.18e-08 -3.97e-08 -5.29e-08 -1.52e-08 -8.89e-08 -9.07e-08 erg/cm2 90%_error_hi 3.12e-08 4.06e-08 5.95e-08 9.68e-08 1.09e-07 1.41e-07 erg/cm2 Peak flux CPL N/A N/A N/A N/A N/A N/A ph/cm2/s 90%_error_low -4.56e-02 -9.55e-03 -1.00e-03 -1.16e-04 -5.62e-02 -5.63e-02 ph/cm2/s 90%_error_hi 5.72e-02 3.11e-02 1.78e-02 1.37e-01 8.40e-02 8.48e-02 ph/cm2/s ======================================================================
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 182.7518 39.8992 0.0214 0.9662 32.4700 0.9193433 8.987 TRIG_00276205 Foreground time interval of the image: -31.000 73.301 (delta_t = 104.301 [sec]) Background time interval of the image: -239.000 -31.000 (delta_t = 208.000 [sec])
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.
Time interval is from -31.000 sec. to 161.000 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.37223 ( -0.257175 0.234206 ) Norm@50keV : 3.58289E-04 ( -6.79785e-05 6.75317e-05 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 45.98 using 59 PHA bins. # Reduced chi-squared = 0.8066 for 57 degrees of freedom # Null hypothesis probability = 8.517643e-01 Photon flux (15-150 keV) in 192 sec: 6.52388E-02 ( -0.0075359 0.0075385 ) ph/cm2/s Energy fluence (15-150 keV) : 6.67085e-07 ( -9.86886e-08 1.02863e-07 ) ergs/cm2
Time interval is from -31.000 sec. to 161.000 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.838958 ( -1.06958 1.55344 ) Epeak [keV] : 26.4772 ( -22.4162 7.14064 ) Norm@50keV : 3.42794E-03 ( -0.00342796 0.0313621 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 41.38 using 59 PHA bins. # Reduced chi-squared = 0.7389 for 56 degrees of freedom # Null hypothesis probability = 9.278647e-01 Photon flux (15-150 keV) in 192 sec: 6.27316E-02 ( -0.007536 0.0076213 ) ph/cm2/s Energy fluence (15-150 keV) : 5.81931e-07 ( -8.89033e-08 1.08533e-07 ) ergs/cm2
Time interval is from 24.500 sec. to 25.500 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -4.28552 ( 4.26872 4.26872 ) Norm@50keV : 7.01284E-05 ( -7.21972e-05 0.000657201 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 65.80 using 59 PHA bins. # Reduced chi-squared = 1.154 for 57 degrees of freedom # Null hypothesis probability = 1.984588e-01 Photon flux (15-150 keV) in 1 sec: 5.62100E-02 ( -0.05621 0.08399 ) ph/cm2/s Energy fluence (15-150 keV) : 1.95907e-09 ( 1 4.82203e-09 ) ergs/cm2
Time interval is from 24.500 sec. to 25.500 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 9.88335 ( -12.4403 -9.9001 ) Epeak [keV] : 16.6096 ( -6.96989 9.14447 ) Norm@50keV : 9.30265E+07 ( -9.98428e+07 1.50181e+11 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 64.40 using 59 PHA bins. # Reduced chi-squared = 1.150 for 56 degrees of freedom # Null hypothesis probability = 2.063162e-01 Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s Energy fluence (15-150 keV) : 1.81895e-09 ( 0 0 ) ergs/cm2
T90 = 160.0 sec. Hardness ratio (energy fluence ratio) = 0.772645565606
S(15-50 keV) = 4.185995e-07 S(50-150 keV) = 2.4849408e-07
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.
IMX = 1.422897493336409E-02, IMY = -9.054389744997844E-03
Time interval of the image: -239.000000 -31.000000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 254.4573 35.3424 1798.5 56.2 0.2 -0.0039 -0.0 0.0 Her X-1 217.6885 12.4208 2.6 42.1 51.3 1.9539 4.4 ------ UNKNOWN 242.9656 32.0034 2.9 49.4 9.6 1.3726 4.0 ------ UNKNOWN 176.4351 78.7044 3.3 38.7 -71.1 1.2200 3.5 ------ UNKNOWN
Time interval of the image: -31.000000 73.300600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 254.5182 35.3614 4.7 56.3 0.2 1.3725 2.4 3.2 Her X-1 209.7209 7.7480 2.3 41.0 65.0 2.1529 5.1 ------ UNKNOWN 135.1876 2.5694 2.2 56.2 170.9 3.1040 5.3 ------ UNKNOWN 254.0483 32.8781 2.0 57.1 3.0 3.8686 5.7 ------ UNKNOWN 161.2271 27.3658 2.5 21.1 169.5 0.4567 4.6 ------ UNKNOWN 182.7519 39.8992 1.3 1.0 32.5 0.9187 9.0 ------ UNKNOWN 215.4759 51.1450 1.9 25.9 -16.1 0.6630 6.1 ------ UNKNOWN 262.5296 45.2343 2.2 57.2 -13.7 2.4576 5.3 ------ UNKNOWN
Time interval of the image: 95.100610 963.052400 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 254.5011 35.4243 5.9 55.4 9.2 4.2309 1.9 5.4 Her X-1 217.7200 43.6390 2.4 26.2 9.4 1.7860 4.7 ------ UNKNOWN 124.0158 62.1392 4.7 41.1 -98.2 6.4589 2.5 ------ UNKNOWN