batgrbproduct Analysis for Trigger=348013

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jun  2 13:27:12 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger348013/SDC
======================================================================

  Trigger: 00348013      Segment: 000

  BAT Trigger Time: 260128637.308   [s; MET]
      Trigger Stop: 260128637.372   [s; MET]
               UTC: 2009-03-30T17:57:12.690100    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 119.093137887545   Dec: 43.34186628848  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.15
     Image Trigger?:     NO
     Rate S/N Ratio:     6.08276253029822  [ if not an image trigger ]
     Image S/N Ratio:    6.15

  Flight Position:   [ source = BAT ]
    RA: 119.093137887545   Dec: 43.34186628848  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 119.071708292178   Dec: 43.2977677027185  [deg; J2000]  
        { 07h 56m 17.2s , +43d 17' 52.0" }
         +/- 3.60985121968711 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.40044772910016 [arcmin] (formal 1-sigma fit error)
    SNR: 4.86077020703974
 
  Angular difference between Flight and Ground position is 2.806409 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     T50: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.0640000104904175 second)
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   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    -0.000233   0.005805   0.004484   0.000405
           0.001135   0.001344   0.001316   0.001030 [error]
 Peak     -0.000233   0.005805   0.004484   0.000405
           0.001135   0.001344   0.001316   0.001030 [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 5.04e-10 4.49e-10 2.76e-10 2.56e-10 1.34e-09 1.49e-09   erg/cm2
              Error 4.42e-10 3.70e-10 2.79e-10 3.64e-10 1.10e-09 1.25e-09   erg/cm2
Peak flux Power-law 2.61e-01 1.30e-01 3.99e-02 1.56e-02 4.39e-01 4.46e-01   ph/cm2/s
              Error 2.30e-01 1.07e-01 3.93e-02 2.09e-02 3.64e-01 3.68e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.16e-10 2.10e-09 1.70e-09 3.18e-11 4.05e-09 4.05e-09   erg/cm2
              Error 2.89e-10 8.59e-10 1.19e-09 9.78e-11 1.50e-09 1.50e-09   erg/cm2
Peak flux Cutoff-PL 9.99e-02 5.46e-01 2.66e-01 2.85e-03 9.15e-01 9.15e-01   ph/cm2/s
              Error 1.38e-01 2.40e-01 1.74e-01 8.42e-03 3.49e-01 3.49e-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 1.43e-01 9.62e-01 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 3.29e-01 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    2.672    1.158    -      -           1.99e-03 1.85e-03   76.000 57
CPL  -5.677    0.000      49.0    7.5      4.40e+01 7.21e+03   55.320 56
 
The chi2 of BB fit is  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    2.672    1.158    -      -           1.99e-03 1.85e-03   76.000 57
CPL  -5.677    0.000      49.0    7.5      4.40e+01 7.21e+03   55.320 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    0.064    0.000    0.064
T90     0.064    0.000    0.064
T50     0.064    0.000    0.064
Peak    0.064    0.000    0.064

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  119.0717 +43.2978 0.0395   20.8 -153.5       0.0120     4.9  TRIG_00348013       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.064 (delta_t =   0.064 [sec])
Background time interval of the image:
-54.207  -5.308 (delta_t =  48.899 [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    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.67242     ( -0.84873   1.46739 )
Norm@50keV  : 1.98737E-03    ( -0.00198362   0.00172253 )
------------------------------------------------------------
# Chi-Squared =          76.00 using 59 PHA bins.
# Reduced chi-squared =          1.333 for     57 degrees of freedom 
# Null hypothesis probability =   4.706795e-02
 
Photon flux (15-150 keV)    in 0.064 sec: 0.439281 ( -0.362389  0.365684 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.33783e-09 ( -1.10067e-09  1.10011e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -5.67686     (     )
Epeak [keV] : 48.9876      ( -9.80904 5.2903 )
Norm@50keV  : 43.9529    ( -50.3338   14374 )
------------------------------------------------------------
# Chi-Squared =          55.32 using 59 PHA bins.
# Reduced chi-squared =         0.9878 for     56 degrees of freedom 
# Null hypothesis probability =   5.006407e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.914828 ( -0.338666  0.358692 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.04572e-09 ( -1.48534e-09  1.51832e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99988   ( -16167.1   -16152.1 )
beta        : -9.98738    ( 257.237   267.237 )
Epeak [keV] : 48.9916      ( -8.86481 8.58706 )
Norm@50keV   : 21.4240    ( -21.424   56.5582 )
------------------------------------------------------------
# Chi-Squared =          55.54 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     55 degrees of freedom 
# Null hypothesis probability =   4.541254e-01
 
Photon flux (15-150 keV)    in 0.064 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]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.67242     ( -0.84873   1.46739 )
Norm@50keV  : 1.98737E-03    ( -0.00198362   0.00172253 )
------------------------------------------------------------
# Chi-Squared =          76.00 using 59 PHA bins.
# Reduced chi-squared =          1.333 for     57 degrees of freedom 
# Null hypothesis probability =   4.706795e-02
 
Photon flux (15-150 keV)    in 0.064 sec: 0.439281 ( -0.362389  0.365684 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.33783e-09 ( -1.10067e-09  1.10011e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -5.67686     (     )
Epeak [keV] : 48.9876      ( -9.80904 5.2903 )
Norm@50keV  : 43.9529    ( -50.3338   14374 )
------------------------------------------------------------
# Chi-Squared =          55.32 using 59 PHA bins.
# Reduced chi-squared =         0.9878 for     56 degrees of freedom 
# Null hypothesis probability =   5.006407e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.914828 ( -0.338666  0.358692 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.04572e-09 ( -1.48534e-09  1.51832e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99995   ( -37553.1   -37538.1 )
beta        : -9.98743    ( 258.19   268.19 )
Epeak [keV] : 48.9932      ( -8.86643 8.58553 )
Norm@50keV   : 21.4211    ( -21.421   56.5669 )
------------------------------------------------------------
# Chi-Squared =          55.54 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     55 degrees of freedom 
# Null hypothesis probability =   4.541262e-01
 
Photon flux (15-150 keV)    in 0.064 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]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Plot creation:
Thu Jun  2 13:34:08 EDT 2011