batgrbproduct Analysis for Trigger=513505

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Feb  6 01:38:43 EST 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger513505/GCN5_download_cron
======================================================================

  Trigger: 00513505      Segment: 000

  BAT Trigger Time: 350135252.476   [s; MET]
      Trigger Stop: 350135252.54   [s; MET]
               UTC: 2012-02-05T11:47:24.617420    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 40.1003583767653   Dec: 61.220476106393  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.53
     Image Trigger?:     NO
     Rate S/N Ratio:     15.0332963783729  [ if not an image trigger ]
     Image S/N Ratio:    7.53

  Flight Position:   [ source = BAT ]
    RA: 40.1003583767653   Dec: 61.220476106393  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 40.0594015847184   Dec: 61.2349598468358  [deg; J2000]  
        { 02h 40m 14.3s , +61d 14' 05.9" }
         +/- 2.7879991206673 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.52913956983674 [arcmin] (formal 1-sigma fit error)
    SNR: 7.03049733442349
 
  Angular difference between Flight and Ground position is 1.467745 arcmin
 
  Partial Coding Fraction: 0.765625    [ including projection effects ]

  Duration
     T90: 0.0399999618530273 +/- 0.0113137314268704
        Measured from: 0.0200001001358032
                   to: 0.0600000619888306     [s; relative to TRIGTIME]
     T50: 0.0199999213218689 +/- 0.00894429003608426
        Measured from: 0.0280001163482666
                   to: 0.0480000376701355     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.456000030040741     
                   to: 0.543999969959259     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.0199999809265137     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.013271   0.008279   0.000983   0.000684
           0.002055   0.001830   0.000857   0.000955 [error]
 Peak      0.023772   0.008933   0.000962  -0.004435
           0.006183   0.005892   0.005040   0.004517 [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 4.04e-09 1.78e-09 4.69e-10 1.53e-10 6.38e-09 6.44e-09   erg/cm2
              Error 9.49e-10 4.69e-10 2.01e-10 1.04e-10 1.46e-09 1.48e-09   erg/cm2
Peak flux Power-law 2.22e-01 7.69e-02 1.50e-02 3.46e-03 3.17e-01 3.18e-01   ph/cm2/s
              Error 9.71e-02 5.67e-02 2.50e-02 1.41e-02 1.44e-01 1.47e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.19e-09 3.51e-09 6.84e-10 1.75e-11 8.40e-09 0.00e+00   erg/cm2
              Error 1.04e-09 1.11e-09 5.50e-10 3.53e-11 1.82e-09 0.00e+00   erg/cm2
Peak flux Cutoff-PL 2.22e-01 7.67e-02 1.49e-02 3.41e-03 3.16e-01 3.14e-01   ph/cm2/s
              Error 1.26e-01 6.99e-02 2.50e-02 1.39e-02 1.46e-01 1.51e-01   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    3.924    0.361    -      -           6.95e-03 2.48e-03   49.440 57
CPL   1.000    0.000      50.0    0.0      7.26e-03 0.00e+00   96.040 56
 
The chi2 of BB fit is 41.76 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    3.354    1.547    -      -           8.80e-04 1.11e-03   55.210 57
CPL   1.000    0.000      50.0    0.0      5.91e-03 0.00e+00   60.910 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.044    0.020    0.064
T90     0.040    0.020    0.060
T50     0.020    0.028    0.048
Peak    1.000   -0.456    0.544

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   40.0594 +61.2350 0.0274   28.1 -135.7       0.0221     7.0  TRIG_00513505       
------------------------------------------
 
Foreground time interval of the image:
  0.020   0.064 (delta_t =   0.044 [sec])
Background time interval of the image:
-239.476   0.020 (delta_t = 239.496 [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    0.020 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.92384     ( -0.305257   0.416848 )
Norm@50keV  : 6.94963E-03    ( -0.00254454   0.00242303 )
------------------------------------------------------------
# Chi-Squared =          49.44 using 59 PHA bins.
# Reduced chi-squared =         0.8674 for     57 degrees of freedom 
# Null hypothesis probability =   7.513139e-01
 
Photon flux (15-150 keV)    in 0.044 sec: 4.01097 ( -0.911574  0.911334 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.37701e-09 ( -1.4572e-09  1.45595e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.020 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 7.25545E-03    (     )
------------------------------------------------------------
# Chi-Squared =          96.04 using 59 PHA bins.
# Reduced chi-squared =          1.715 for     56 degrees of freedom 
# Null hypothesis probability =   6.973182e-04
 
Photon flux (15-150 keV)    in 0.044 sec: 4.79790 ( -1.00418  1.00418 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.40426e-09 ( -1.81504e-09  1.81786e-09 ) ergs/cm2
 
Band function
Time interval is from    0.020 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.775827   ( -1.06044   0.979235 )
beta        : -9.99955    ( 7046.47   7056.46 )
Epeak [keV] : 16.0060      ( -14.6273 9.41142 )
Norm@50keV   : 0.663137    ( -0.66332   162.843 )
------------------------------------------------------------
# Chi-Squared =          39.55 using 59 PHA bins.
# Reduced chi-squared =         0.7191 for     55 degrees of freedom 
# Null hypothesis probability =   9.422338e-01
 
Photon flux (15-150 keV)    in 0.044 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]    : 5.68602  (-1.11605  1.32724)
R^2/D10^2   : 23.5604  (-14.6074   40.7225)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          41.76 using 59 PHA bins.
# Reduced chi-squared =         0.7327 for     57 degrees of freedom 
# Null hypothesis probability =   9.350967e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.105e-09   1.795e-09
25- 50  3.634e-09   1.511e-09
50-150  2.655e-10   1.858e-10
15-150  8.004e-09   3.435e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 16.7157       (-4.05948      3.47239)
Norm        : 74.4093       (-23.544     38.2167)
------------------------------------------------------------
# Chi-Squared =          39.89 using 59 PHA bins.
# Reduced chi-squared =         0.6998 for     57 degrees of freedom 
# Null hypothesis probability =   9.585954e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.288e-09   1.045e-09
25- 50  3.235e-09   8.012e-10
50-150  7.041e-10   3.560e-10
15-150  8.227e-09   1.910e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.22300        (-4.223      2.18706)
R1^2/D10^2  : 63.2040        (-63.204      -63.204)
kT2 [keV]   : 8.83373        (-8.83373      90.0142)
R2^2/D10^2  : 1.49784    (-1.49784   30.667)
------------------------------------------------------------
# Chi-Squared =          39.34 using 59 PHA bins.
# Reduced chi-squared =         0.7152 for     55 degrees of freedom 
# Null hypothesis probability =   9.451589e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.261e-09   2.451e-09
25- 50  3.421e-09   1.862e-09
50-150  7.600e-10   5.773e-10
15-150  8.441e-09   4.380e-09

Peak spectrum fit

Power-law model
Time interval is from   -0.456 sec. to    0.544 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.35416     ( -1.14508   1.94875 )
Norm@50keV  : 8.79872E-04    ( -0.000879872   0.0013425 )
------------------------------------------------------------
# Chi-Squared =          55.21 using 59 PHA bins.
# Reduced chi-squared =         0.9686 for     57 degrees of freedom 
# Null hypothesis probability =   5.425693e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.316641 ( -0.143325  0.14559 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.26987e-08 ( -6.91732e-09  9.21892e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.456 sec. to    0.544 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 5.90950E-03    (     )
------------------------------------------------------------
# Chi-Squared =          60.91 using 59 PHA bins.
# Reduced chi-squared =          1.088 for     56 degrees of freedom 
# Null hypothesis probability =   3.037727e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.315667 ( -0.145226  0.145879 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.25194e-16 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -0.456 sec. to    0.544 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.32569   ( -0.290159   -0.290159 )
beta        : -3.92809    ( 3.99198   1.72363 )
Epeak [keV] : 15.7750      ( -13.0376 34.065 )
Norm@50keV   : 3547.31    ( -3631.08   5.22799e+06 )
------------------------------------------------------------
# Chi-Squared =          54.72 using 59 PHA bins.
# Reduced chi-squared =         0.9950 for     55 degrees of freedom 
# Null hypothesis probability =   4.851765e-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]    : 3.86765  (-1.40729  2.2091)
R^2/D10^2   : 9.65646  (-9.65647   114.391)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          55.11 using 59 PHA bins.
# Reduced chi-squared =         0.9668 for     57 degrees of freedom 
# Null hypothesis probability =   5.464650e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.444e-09   4.377e-09
25- 50  2.439e-09   1.672e-09
50-150  2.411e-11   2.906e-11
15-150  9.907e-09   6.160e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 10.7666       (-6.1692      25.9891)
Norm        : 9.22735       (-9.22731     60.0947)
------------------------------------------------------------
# Chi-Squared =          55.25 using 59 PHA bins.
# Reduced chi-squared =         0.9692 for     57 degrees of freedom 
# Null hypothesis probability =   5.411247e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.031e-09   4.345e-09
25- 50  3.333e-09   2.414e-09
50-150  2.779e-10   3.788e-10
15-150  1.064e-08   6.890e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.56999        (-3.552      2.11662)
R1^2/D10^2  : 13.6275        (-13.8885      -13.8885)
kT2 [keV]   : 19.0736        (-18.4207      -18.4207)
R2^2/D10^2  : 4.24251E-03    (-0.00448724   -0.00448724)
------------------------------------------------------------
# Chi-Squared =          54.30 using 59 PHA bins.
# Reduced chi-squared =         0.9872 for     55 degrees of freedom 
# Null hypothesis probability =   5.014100e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.250e-09   4.533e-09
25- 50  3.252e-09   1.942e-09
50-150  3.920e-09   3.463e-09
15-150  1.442e-08   8.680e-09
Plot creation:
Mon Feb  6 13:56:06 EST 2012