batgrbproduct Analysis for Trigger=429868

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Jul 25 08:11:23 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger429868/GCN5_download_cron
======================================================================

  Trigger: 00429868      Segment: 000

  BAT Trigger Time: 301624945.216   [s; MET]
      Trigger Stop: 301624946.24   [s; MET]
               UTC: 2010-07-24T00:42:19.202780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 194.566197960917   Dec: -11.1213088935374  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.55
     Image Trigger?:     NO
     Rate S/N Ratio:     19.157244060668  [ if not an image trigger ]
     Image S/N Ratio:    10.55

  Flight Position:   [ source = BAT ]
    RA: 194.566197960917   Dec: -11.1213088935374  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 194.56888050202   Dec: -11.0946655603152  [deg; J2000]  
        { 12h 58m 16.5s , -11d 05' 40.8" }
         +/- 1.70443038999972 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.653210360693445 [arcmin] (formal 1-sigma fit error)
    SNR: 14.2000820153971
 
  Angular difference between Flight and Ground position is 1.606383 arcmin
 
  Partial Coding Fraction: 0.4335938    [ including projection effects ]

  Duration
     T90: 1.38799995183945 +/- 0.15579471580594
        Measured from: 0.148000121116638
                   to: 1.53600007295609     [s; relative to TRIGTIME]
     T50: 0.671999990940094 +/- 0.207460807316148
        Measured from: 0.388000071048737
                   to: 1.06000006198883     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0879999995231628     
                   to: 1.08799999952316     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.0839999914169312     
                   to: 1.64800000190735     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.089862   0.124126   0.055556   0.010684
           0.010605   0.011417   0.010621   0.009442 [error]
 Peak      0.060696   0.097648   0.049607   0.005327
           0.008623   0.009442   0.008722   0.007340 [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 3.34e-08 4.74e-08 4.99e-08 9.70e-08 1.61e-07 2.28e-07   erg/cm2
              Error 5.26e-09 5.50e-09 9.78e-09 3.71e-08 2.28e-08 4.82e-08   erg/cm2
Peak flux Power-law 7.64e-01 6.33e-01 3.56e-01 2.95e-01 1.88e+00 2.05e+00   ph/cm2/s
              Error 1.27e-01 7.73e-02 6.78e-02 1.04e-01 2.30e-01 2.59e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.00e-08 5.57e-08 4.49e-08 1.28e-08 1.41e-07 1.43e-07   erg/cm2
              Error 6.05e-09 8.15e-09 1.27e-08 2.41e-08 3.41e-08 0.00e+00   erg/cm2
Peak flux Cutoff-PL 6.49e-01 7.81e-01 3.43e-01 4.17e-02 1.81e+00 1.81e+00   ph/cm2/s
              Error 1.49e-01 1.15e-01 8.87e-02 2.35e-01 0.00e+00 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    1.925    0.208    -      -           1.12e-02 1.62e-03   55.000 57
CPL   0.506    1.162      42.4   11.7      7.65e-02 2.18e-01   49.390 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    1.831    0.205    -      -           1.35e-02 2.00e-03   53.210 57
CPL  -0.006    1.211      45.1    9.4      1.58e-01 4.80e-01   43.720 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    1.564    0.084    1.648
T90     1.388    0.148    1.536
T50     0.672    0.388    1.060
Peak    1.000    0.088    1.088

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  194.5689 -11.0947 0.0136   33.6   38.5       0.3047    14.2  TRIG_00429868       
------------------------------------------
 
Foreground time interval of the image:
  0.084   1.648 (delta_t =   1.564 [sec])
Background time interval of the image:
-239.216   0.084 (delta_t = 239.300 [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    0.084 sec. to    1.648 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.92510     ( -0.201597   0.214328 )
Norm@50keV  : 1.11965E-02    ( -0.00163481   0.00160089 )
------------------------------------------------------------
# Chi-Squared =          55.00 using 59 PHA bins.
# Reduced chi-squared =         0.9649 for     57 degrees of freedom 
# Null hypothesis probability =   5.504122e-01
 
Photon flux (15-150 keV)    in 1.564 sec: 1.62420 ( -0.186869  0.186872 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.61051e-07 ( -2.2553e-08  2.31383e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.084 sec. to    1.648 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.506378     ( -1.27634   1.04726 )
Epeak [keV] : 42.4297      ( -8.21985 15.1071 )
Norm@50keV  : 7.64787E-02    ( -0.0764809   0.35979 )
------------------------------------------------------------
# Chi-Squared =          49.39 using 59 PHA bins.
# Reduced chi-squared =         0.8820 for     56 degrees of freedom 
# Null hypothesis probability =   7.213704e-01
 
Photon flux (15-150 keV)    in 1.564 sec: 1.55201 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.40797e-07 ( -2.24418e-08  2.57234e-08 ) ergs/cm2
 
Band function
Time interval is from    0.084 sec. to    1.648 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.803916   ( -0.839283   0.724689 )
beta        : -3.02018    ( 3.22617   1.21039 )
Epeak [keV] : 43.8198      ( -17.5379 13.1662 )
Norm@50keV   : 5.03623E-02    ( -0.0200539   441.773 )
------------------------------------------------------------
# Chi-Squared =          49.37 using 59 PHA bins.
# Reduced chi-squared =         0.8975 for     55 degrees of freedom 
# Null hypothesis probability =   6.888554e-01
 
Photon flux (15-150 keV)    in 1.564 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    0.088 sec. to    1.088 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83132     ( -0.199403   0.211377 )
Norm@50keV  : 1.34975E-02    ( -0.00201596   0.00197728 )
------------------------------------------------------------
# Chi-Squared =          53.21 using 59 PHA bins.
# Reduced chi-squared =         0.9335 for     57 degrees of freedom 
# Null hypothesis probability =   6.181048e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.88300 ( -0.229948  0.22995 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.24146e-07 ( -1.84223e-08  1.8864e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.088 sec. to    1.088 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -6.21421E-03     ( -1.34185   1.07942 )
Epeak [keV] : 45.1123      ( -7.00757 11.8321 )
Norm@50keV  : 0.157659    ( -0.157659   0.802252 )
------------------------------------------------------------
# Chi-Squared =          43.72 using 59 PHA bins.
# Reduced chi-squared =         0.7808 for     56 degrees of freedom 
# Null hypothesis probability =   8.836619e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.80975 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.07951e-07 ( -1.7298e-08  1.933e-08 ) ergs/cm2
 
Band function
Time interval is from    0.088 sec. to    1.088 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -3.59159E-02   ( -0.724945   5.3618 )
beta        : -7.98286    ( 5.82837   15.8284 )
Epeak [keV] : 45.1564      ( -14.7975 8.69655 )
Norm@50keV   : 0.149511    ( -0.0772429   124.476 )
------------------------------------------------------------
# Chi-Squared =          43.73 using 59 PHA bins.
# Reduced chi-squared =         0.7950 for     55 degrees of freedom 
# Null hypothesis probability =   8.630042e-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]    :   (  )
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:
Sun Jul 25 08:27:51 EDT 2010