batgrbproduct Analysis for Trigger=555163

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun May  5 22:29:58 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger555163/batgroup_hand_proc
======================================================================

  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

  Flight Position:   [ source = BAT ]
    RA: 137.059762477099   Dec: 17.4850913390281  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 137.060 Dec: 17.485 [deg; J2000]  
        { 09h 08m 14s , +17d 29' 06" }
         +/- 1.5 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.5 [arcmin] (formal 1-sigma fit error)
    SNR: 15.124
 
  Angular difference between Flight and Ground position is 0.014656 arcmin
 
  Partial Coding Fraction: 0.02636719    [ including projection effects ]

  Duration
     T90: 88.4800000190735 +/- 116.258229523501
        Measured from: -1.14399999380112
                   to: 87.3360000252724     [s; relative to TRIGTIME]
     T50: 13.0080000758171 +/- 2.34524195796188
        Measured from: 0.663999974727631
                   to: 13.6720000505447     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.43599998950958     
                   to: 2.43599998950958     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -3.03200000524521     
                   to: 363.255999982357     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     4.790068   7.793293  10.139503   4.472458
           0.285032   0.332948   0.358888   0.324488 [error]
 Peak      0.499789   0.907532   1.583195   0.974356
           0.078601   0.102992   0.130382   0.125933 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== 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   Power-law 1.98e-06 4.44e-06 7.84e-06 3.24e-05 2.14e-05 4.67e-05   erg/cm2
              Error 1.73e-07 2.31e-07 3.44e-07 3.28e-06 8.95e-07 3.42e-06   erg/cm2
Peak flux Power-law 5.63e+00 8.50e+00 9.62e+00 2.07e+01 3.00e+01 4.45e+01   ph/cm2/s
              Error 1.23e+00 1.16e+00 9.65e-01 4.41e+00 3.10e+00 4.88e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.90e-06 4.46e-06 8.00e-06 2.77e-05 2.14e-05 4.21e-05   erg/cm2
              Error 2.11e-07 2.39e-07 4.62e-07 7.35e-06 9.05e-07 7.06e-06   erg/cm2
Peak flux Cutoff-PL 4.67e+00 8.53e+00 1.04e+01 1.40e+01 2.95e+01 3.76e+01   ph/cm2/s
              Error 1.76e+00 1.23e+00 1.50e+00 5.37e+00 3.14e+00 8.50e+00   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.180    0.072    -      -           5.72e-03 2.39e-04   47.820 57
CPL   1.036    0.266     421.8    0.0      6.55e-03 1.61e-03   47.190 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.822    0.169    -      -           2.61e-01 2.74e-02   56.770 57
CPL   0.284    0.771     210.1    0.0      4.22e-01 0.00e+00   55.460 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the 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 PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 34.624000 sec.
T50 in the 50-300 keV band: 5.568000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  366.288   -3.032  363.256
T90    88.480   -1.144   87.336
T50    13.008    0.664   13.672
Peak    1.000    1.436    2.436

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  137.0598    17.4851   0.0000    59.4380  -175.8716        21.7601112     15.124 TRIG_00555163                 
 
Foreground time interval of the image:
 -3.032  13.789 (delta_t =  16.821 [sec])
Background time interval of the image:
-239.912  -3.032 (delta_t = 236.880 [sec])

Lightcurves

Notes:

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)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -3.032 sec. to  363.256 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17973     ( -0.0725565   0.0722211 )
Norm@50keV  : 5.72355E-03    ( -0.000239117   0.000238133 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.82 using 59 PHA bins.
# Reduced chi-squared =         0.8390 for     57 degrees of freedom 
# Null hypothesis probability =   8.015322e-01
 
Photon flux (15-150 keV)    in 366.3 sec: 0.669973 ( -0.0300555  0.030206 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13939e-05 ( -8.94409e-07  8.9486e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -3.032 sec. to  363.256 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03611     ( -0.320514   0.2109 )
Epeak [keV] : 421.763      ( -421.752 -421.752 )
Norm@50keV  : 6.55181E-03    ( -0.000978543   0.00223656 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.19 using 59 PHA bins.
# Reduced chi-squared =         0.8426 for     56 degrees of freedom 
# Null hypothesis probability =   7.930299e-01
 
Photon flux (15-150 keV)    in 366.3 sec: 0.664725 ( -0.03179  0.031267 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13581e-05 ( -9.06153e-07  9.03406e-07 ) ergs/cm2
 
Band function
Time interval is from   -3.032 sec. to  363.256 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06373   ( 0.930863   0.930863 )
beta        : -8.94635    ( -0.0722171   0.0725665 )
Epeak [keV] : 514.030      ( -206.28 -514.03 )
Norm@50keV   : 6.37186E-03    ( -0.000257407   0.00117853 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.21 using 59 PHA bins.
# Reduced chi-squared =         0.8584 for     55 degrees of freedom 
# Null hypothesis probability =   7.630597e-01
 
Photon flux (15-150 keV)    in 366.3 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]    : 22.1275  (  )
R^2/D10^2   : 2.27026E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         147.86 using 59 PHA bins.
# Reduced chi-squared =         2.5940 for     57 degrees of freedom 
# Null hypothesis probability =   5.289157e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.515e-07   6.410e-08
25- 50  3.988e-06   2.619e-07
50-150  1.459e-05   8.626e-07
15-150  1.933e-05   9.414e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 2.88936       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         137.84 using 59 PHA bins.
# Reduced chi-squared =         2.4182 for     57 degrees of freedom 
# Null hypothesis probability =   1.201072e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.635e-06   1.141e-07
25- 50  5.070e-06   2.344e-07
50-150  1.112e-05   5.201e-07
15-150  1.882e-05   8.846e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.63903        (-1.31621      2.34372)
R1^2/D10^2  : 1.16165        (-0.82867      2.65406)
kT2 [keV]   : 28.0440        (-2.54045      4.54438)
R2^2/D10^2  : 9.48266E-03    (-0.00390586   0.00372344)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.83 using 59 PHA bins.
# Reduced chi-squared =         0.9969 for     55 degrees of freedom 
# Null hypothesis probability =   4.810536e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.081e-06   6.181e-07
25- 50  4.088e-06   6.236e-07
50-150  1.527e-05   1.123e-06
15-150  2.143e-05   1.819e-06

Peak spectrum fit

Power-law model
Time interval is from    1.436 sec. to    2.436 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.821554     ( -0.171511   0.167229 )
Norm@50keV  : 0.260774    ( -0.0275296   0.0271985 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.77 using 59 PHA bins.
# Reduced chi-squared =         0.9960 for     57 degrees of freedom 
# Null hypothesis probability =   4.836047e-01
 
Photon flux (15-150 keV)    in 1 sec: 29.9514 ( -3.09119  3.09895 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.02011e-06 ( -3.10905e-07  3.11086e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.436 sec. to    2.436 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.283623     ( -0.933931   0.607192 )
Epeak [keV] : 210.122      (   )
Norm@50keV  : 0.422105    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.46 using 59 PHA bins.
# Reduced chi-squared =         0.9904 for     56 degrees of freedom 
# Null hypothesis probability =   4.950680e-01
 
Photon flux (15-150 keV)    in 1 sec: 29.5499 ( -3.1333  3.1474 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.02879e-06 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    1.436 sec. to    2.436 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.758140   ( 0.75814   0.75814 )
beta        : -0.821565    ( -0.16721   0.171506 )
Epeak [keV] : 18.7910      ( -18.7909 -18.7909 )
Norm@50keV   : 0.360784    ( -0.138106   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.77 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     55 degrees of freedom 
# Null hypothesis probability =   4.088118e-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]    : 26.7356  (-3.03959  3.73124)
R^2/D10^2   : 0.651928  (-0.212886   0.290683)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.35 using 59 PHA bins.
# Reduced chi-squared =          1.094 for     57 degrees of freedom 
# Null hypothesis probability =   2.917632e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.803e-08   1.539e-08
25- 50  4.575e-07   6.855e-08
50-150  2.395e-06   3.555e-07
15-150  2.930e-06   3.455e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 119.059       (-12.8383     12.8377)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         106.42 using 59 PHA bins.
# Reduced chi-squared =         1.8671 for     57 degrees of freedom 
# Null hypothesis probability =   7.896296e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.963e-07   1.653e-07
25- 50  5.701e-07   3.112e-07
50-150  1.250e-06   6.775e-07
15-150  2.117e-06   1.145e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.57933        (-1.17754      2.83066)
R1^2/D10^2  : 2039.29        (-2005.24      306663)
kT2 [keV]   : 28.8246        (-3.66731      4.98681)
R2^2/D10^2  : 0.504348    (-0.194481   0.262945)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.47 using 59 PHA bins.
# Reduced chi-squared =         0.9359 for     55 degrees of freedom 
# Null hypothesis probability =   6.101578e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.071e-07   9.483e-08
25- 50  4.191e-07   7.240e-08
50-150  2.426e-06   3.785e-07
15-150  3.052e-06   4.800e-07
Plot creation:
Mon May  6 10:04:31 EDT 2013