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: Thu Dec 17 15:12:42 EST 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger555163
======================================================================
Trigger: 00555163 Segment: 000
BAT Trigger Time: 389434958.912 [s; MET]
Trigger Stop: 389434959.936 [s; MET]
UTC: 2013-05-05T08:22:28.392980 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 137.059762477099 Dec: 17.4850913390281 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.59
Image Trigger?: NO
Rate S/N Ratio: 255.998046867549 [ if not an image trigger ]
Image S/N Ratio: 6.59
Analysis Position: [ source = BAT ]
RA: 137.059762477099 Dec: 17.4850913390281 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 137.06 Dec: 17.4851 [deg; J2000]
{ 09h 08m 14.4s , +17d 29' 06.4" }
+/- 1.63568103017 [arcmin] (estimated 90% radius based on SNR)
SNR: 15.062305751
Angular difference between the analysis and refined position is 0.013603 arcmin
Partial Coding Fraction: 0.02636719 [ including projection effects ]
Duration
T90: 89.3440000414848 +/- 111.154229439193
Measured from: -1.14399999380112
to: 88.2000000476837 [s; relative to TRIGTIME]
T50: 13.1840000152588 +/- 2.45682072392117
Measured from: 0.680000007152557
to: 13.8640000224113 [s; relative to TRIGTIME]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 366.288 -3.032 363.256
T90 89.344 -1.144 88.200
T50 13.184 0.680 13.864
Peak 1.000 1.436 2.436
====== 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 -1.709 -0.134 0.132 - - - 1.10e-03 -8.42e-05 8.33e-05 43.330 57
CPL -1.714 -0.129 0.189 9999.360 -9999.350 -9999.360 1.10e-03 -1.10e-03 4.19e-04 43.350 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 N/A N/A N/A - - - N/A N/A N/A N/A N/A
CPL N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
=== 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 5.82e-07 9.42e-07 1.15e-06 2.78e-06 3.47e-06 5.45e-06 erg/cm2
90%_error_low -6.80e-08 -6.75e-08 -1.20e-07 -5.67e-07 -2.77e-07 -6.76e-07 erg/cm2
90%_error_hi 7.01e-08 6.74e-08 1.19e-07 6.60e-07 2.79e-07 7.47e-07 erg/cm2
Peak flux PL N/A N/A N/A N/A N/A N/A ph/cm2/s
Image
15.0-350.0 keV image (Event data with DETECTION mask)
#RAcent DECcent POSerr Theta Phi Peak_Cts SNR Name 137.060 17.485 0.000 59.438 -175.872 21.937 15.062 TRIG_00555163 Foreground time interval of the image: -3.032 to 13.789 [sec] Background time interval of the image: -239.912 to -3.032 [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 23.572 sec. to 363.256 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.70911 ( -0.134006 0.131798 ) Norm@50keV : 1.10298E-03 ( -8.41705e-05 8.327e-05 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 43.33 using 59 PHA bins. # Reduced chi-squared = 0.7601 for 57 degrees of freedom # Null hypothesis probability = 9.092971e-01 Photon flux (15-150 keV) in 339.7 sec: 0.146964 ( -0.010598 0.010625 ) ph/cm2/s Energy fluence (15-150 keV) : 3.46718e-06 ( -2.76632e-07 2.79057e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 23.572 sec. to 363.256 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.71387 ( -0.129354 0.188473 ) Epeak [keV] : 9999.36 ( -9999.35 -9999.36 ) Norm@50keV : 1.10081E-03 ( -0.00110354 0.000416179 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 43.35 using 59 PHA bins. # Reduced chi-squared = 0.7740 for 56 degrees of freedom # Null hypothesis probability = 8.916956e-01 Photon flux (15-150 keV) in 339.7 sec: 0.147763 ( -0.015185 0.013584 ) ph/cm2/s Energy fluence (15-150 keV) : 3.51882e-06 ( -3.29001e-07 2.26647e-07 ) ergs/cm2
1-s peak spectrum fit
1-s peak spectrum unavailable, likely because there are no event data in the 1-s peak range.
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = N/A sec. Hardness ratio (energy fluence ratio) = N/A
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = N/A S(50-150 keV) = N/A
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 (with DETECTION mask)
IMX = -1.68907355441, IMY = 0.121915813671
Spacecraft aspect plot
Bright source in the event data image
Event data image of 15-350 keV band
Time interval of the image: -3.032000 13.788590 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 254.4215 35.4725 4.0 44.2 28.3 0.4711 2.9 8.0 Her X-1 167.2322 9.1216 2.8 54.8 148.0 5.6520 4.1 ------ UNKNOWN 232.4735 62.9561 3.5 17.7 -5.0 0.2674 3.3 ------ UNKNOWN 137.0417 17.4809 0.7 59.5 -175.9 23.4004 16.1 ------ UNKNOWN 131.2273 35.3489 3.1 47.6 -157.9 0.6429 3.7 ------ UNKNOWN 341.5679 68.7920 2.4 49.4 -52.0 2.0840 4.7 ------ UNKNOWN
Webpage updated on: Tue Jan 12 00:18:13 EST 2016