batgrbproduct Analysis for Trigger=357580

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jun  1 13:52:13 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger357580/SDC
======================================================================

  Trigger: 00357580      Segment: 000

  BAT Trigger Time: 269459205.372   [s; MET]
      Trigger Stop: 269459205.436   [s; MET]
               UTC: 2009-07-16T17:46:40.455720    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 216.595653910853   Dec: 26.1255938414509  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.93
     Image Trigger?:     NO
     Rate S/N Ratio:     9.48683298050514  [ if not an image trigger ]
     Image S/N Ratio:    5.93

  Flight Position:   [ source = BAT ]
    RA: 216.595653910853   Dec: 26.1255938414509  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 216.500226765782   Dec: 26.0773168189751  [deg; J2000]  
        { 14h 26m 00.1s , +26d 04' 38.3" }
         +/- 6.56467963777566 [arcmin] (estimated 90% radius based on SNR)
         +/- 4.84965931738122 [arcmin] (formal 1-sigma fit error)
    SNR: 2.06857118166445
 
  Angular difference between Flight and Ground position is 5.901489 arcmin
 
  Partial Coding Fraction: 0.7578125    [ 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    -0.003361  -0.000789   0.005581   0.006202
           0.001720   0.001684   0.001708   0.001812 [error]
 Peak     -0.003361  -0.000789   0.005581   0.006202
           0.001720   0.001684   0.001708   0.001812 [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 5.27e-11 1.64e-10 4.16e-10 3.01e-09 1.13e-09 3.66e-09   erg/cm2
              Error 2.21e-10 3.54e-10 5.03e-10 1.17e-08 1.45e-09 1.18e-08   erg/cm2
Peak flux Power-law 2.60e-02 4.36e-02 5.55e-02 1.41e-01 1.64e-01 2.66e-01   ph/cm2/s
              Error 1.12e-01 9.81e-02 6.85e-02 4.33e-01 2.93e-01 3.38e-01   ph/cm2/s
 
Fluence   Cutoff-PL 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 Cutoff-PL 2.15e-03 1.06e-01 3.53e-01 4.95e-01 4.97e-01 0.00e+00   ph/cm2/s
              Error 2.06e-02 1.34e-01 2.44e-01 3.52e-01 3.52e-01 0.00e+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    0.670    0.000    -      -           1.43e-03 2.33e-03   66.560 57
CPL -10.000    0.000      73.3   15.8      2.98e+01 1.33e+02   61.990 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    0.670    0.000    -      -           1.43e-03 2.33e-03   66.560 57
CPL -10.000    0.000      73.3   15.8      2.98e+01 1.33e+02   61.990 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
  216.5002 +26.0773 0.0925   33.6 -160.4       0.0073     2.1  TRIG_00357580       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.064 (delta_t =   0.064 [sec])
Background time interval of the image:
-60.372  -5.372 (delta_t =  55.000 [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: 0.669663     ( -0.648551   -0.648551 )
Norm@50keV  : 1.42714E-03    ( -0.00141881   0.00324913 )
------------------------------------------------------------
# Chi-Squared =          66.56 using 59 PHA bins.
# Reduced chi-squared =          1.168 for     57 degrees of freedom 
# Null hypothesis probability =   1.811165e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.164301 ( -0.164299  0.421983 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12937e-09 ( -1.12937e-09  1.76274e-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: -9.99989     (     )
Epeak [keV] : 73.3015      ( -12.991 18.6005 )
Norm@50keV  : 29.8383    ( -29.8451   236.796 )
------------------------------------------------------------
# Chi-Squared =          61.99 using 59 PHA bins.
# Reduced chi-squared =          1.107 for     56 degrees of freedom 
# Null hypothesis probability =   2.710494e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.494565 ( -0.349611  0.355052 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) 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       : 4.99972   ( -6813.62   -6798.65 )
beta        : -9.37167    ( 10   19.9998 )
Epeak [keV] : 75.6037      ( -32.6024 53.0122 )
Norm@50keV   : 0.692521    ( -0.693181   4.02747 )
------------------------------------------------------------
# Chi-Squared =          63.60 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     55 degrees of freedom 
# Null hypothesis probability =   1.993560e-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: 0.669663     ( -0.648551   -0.648551 )
Norm@50keV  : 1.42714E-03    ( -0.00141881   0.00324913 )
------------------------------------------------------------
# Chi-Squared =          66.56 using 59 PHA bins.
# Reduced chi-squared =          1.168 for     57 degrees of freedom 
# Null hypothesis probability =   1.811165e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.164301 ( -0.164299  0.421983 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12937e-09 ( -1.12937e-09  1.76274e-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: -9.99989     (     )
Epeak [keV] : 73.3015      ( -12.991 18.6005 )
Norm@50keV  : 29.8383    ( -29.8451   236.796 )
------------------------------------------------------------
# Chi-Squared =          61.99 using 59 PHA bins.
# Reduced chi-squared =          1.107 for     56 degrees of freedom 
# Null hypothesis probability =   2.710494e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.494565 ( -0.349611  0.355052 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) 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       : 4.99972   ( -6813.62   -6798.65 )
beta        : -9.37167    ( 10   19.9998 )
Epeak [keV] : 75.6037      ( -32.6024 53.0122 )
Norm@50keV   : 0.692521    ( -0.693181   4.02747 )
------------------------------------------------------------
# Chi-Squared =          63.60 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     55 degrees of freedom 
# Null hypothesis probability =   1.993560e-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:
Wed Jun  1 14:06:15 EDT 2011