batgrbproduct Analysis for Trigger=440606

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Dec 19 09:20:17 EST 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger440606/GCN5_download_cron
======================================================================

  Trigger: 00440606      Segment: 000

  BAT Trigger Time: 314418696.236   [s; MET]
      Trigger Stop: 314418696.3   [s; MET]
               UTC: 2010-12-19T02:31:29.757600    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 74.6157044200633   Dec: -2.53400569829485  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.15
     Image Trigger?:     NO
     Rate S/N Ratio:     102.946588093049  [ if not an image trigger ]
     Image S/N Ratio:    11.15

  Flight Position:   [ source = BAT ]
    RA: 74.6157044200633   Dec: -2.53400569829485  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 74.5868284853806   Dec: -2.52669392284292  [deg; J2000]  
        { 04h 58m 20.8s , -02d 31' 36.1" }
         +/- 0.970770489102654 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.296500094071092 [arcmin] (formal 1-sigma fit error)
    SNR: 31.7338881260554
 
  Angular difference between Flight and Ground position is 1.785599 arcmin
 
  Partial Coding Fraction: 0.9453125    [ including projection effects ]

  Duration
     T90: 0.827999949455261 +/- 0.180399565294848
        Measured from: 0.00400012731552124
                   to: 0.832000076770782     [s; relative to TRIGTIME]
     T50: 0.411999940872192 +/- 0.030463099373373
        Measured from: 0.080000102519989
                   to: 0.492000043392181     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.015999972820282     
                   to: 0.984000027179718     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.015999972820282     
                   to: 1.10799998044968     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.080561   0.162120   0.207798   0.096327
           0.007457   0.009018   0.009537   0.008420 [error]
 Peak      0.078222   0.154854   0.202742   0.097279
           0.007195   0.008751   0.009360   0.008292 [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 1.95e-08 6.15e-08 1.59e-07 1.19e-06 4.34e-07 1.43e-06   erg/cm2
              Error 2.41e-09 4.43e-09 8.70e-09 1.64e-07 2.49e-08 1.66e-07   erg/cm2
Peak flux Power-law 5.82e-01 1.00e+00 1.32e+00 3.54e+00 3.87e+00 6.45e+00   ph/cm2/s
              Error 7.45e-02 7.64e-02 7.11e-02 4.51e-01 2.04e-01 4.54e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.94e-08 6.15e-08 1.60e-07 1.18e-06 4.34e-07 1.42e-06   erg/cm2
              Error 2.41e-09 4.44e-09 8.71e-09 1.62e-07 2.49e-08 1.65e-07   erg/cm2
Peak flux Cutoff-PL 5.81e-01 1.00e+00 1.32e+00 3.52e+00 3.87e+00 6.43e+00   ph/cm2/s
              Error 7.45e-02 7.65e-02 7.11e-02 4.51e-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    0.626    0.100    -      -           3.05e-02 1.70e-03   65.640 57
CPL   0.621    0.101    9999.4    0.0      3.08e-02 4.43e-03   65.710 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    0.603    0.101    -      -           3.31e-02 1.87e-03   67.890 57
CPL   0.600    0.102    9999.4    0.0      3.34e-02 4.46e-03   67.990 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: 0.512000 sec.
T50 in the 50-300 keV band: 0.320000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    1.124   -0.016    1.108
T90     0.828    0.004    0.832
T50     0.412    0.080    0.492
Peak    1.000   -0.016    0.984

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   74.5868  -2.5267 0.0061   14.3   32.9       0.5960    31.7  TRIG_00440606       
------------------------------------------
 
Foreground time interval of the image:
 -0.016   1.108 (delta_t =   1.124 [sec])
Background time interval of the image:
-97.935 -52.476 (delta_t =  45.459 [sec])
-52.236  -0.016 (delta_t =  52.220 [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   -0.016 sec. to    1.108 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.625664     ( -0.100979   0.0984164 )
Norm@50keV  : 3.05444E-02    ( -0.00170897   0.00169371 )
------------------------------------------------------------
# Chi-Squared =          65.64 using 59 PHA bins.
# Reduced chi-squared =          1.152 for     57 degrees of freedom 
# Null hypothesis probability =   2.022705e-01
 
Photon flux (15-150 keV)    in 1.124 sec: 3.55561 ( -0.186286  0.186515 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.33702e-07 ( -2.48111e-08  2.49644e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.016 sec. to    1.108 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.621472     ( -0.105454   0.0958017 )
Epeak [keV] : 9999.36      ( -9989.53 -9989.53 )
Norm@50keV  : 3.07913E-02    ( -0.00162277   0.00724607 )
------------------------------------------------------------
# Chi-Squared =          65.71 using 59 PHA bins.
# Reduced chi-squared =          1.173 for     56 degrees of freedom 
# Null hypothesis probability =   1.757206e-01
 
Photon flux (15-150 keV)    in 1.124 sec: 3.55469 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.33844e-07 ( -2.4828e-08  2.49831e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.016 sec. to    1.108 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99998   ( -125560   -125560 )
beta        : -0.646768    ( -0.0982445   0.101438 )
Epeak [keV] : 26.2718      ( -26.2718 7.4504 )
Norm@50keV   : 1112.35    ( -829.957   1.92615e+06 )
------------------------------------------------------------
# Chi-Squared =          64.94 using 59 PHA bins.
# Reduced chi-squared =          1.181 for     55 degrees of freedom 
# Null hypothesis probability =   1.688943e-01
 
Photon flux (15-150 keV)    in 1.124 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   -0.016 sec. to    0.984 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.602834     ( -0.102471   0.0997816 )
Norm@50keV  : 3.31481E-02    ( -0.00188047   0.00186238 )
------------------------------------------------------------
# Chi-Squared =          67.89 using 59 PHA bins.
# Reduced chi-squared =          1.191 for     57 degrees of freedom 
# Null hypothesis probability =   1.530719e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.86891 ( -0.204173  0.204398 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.23321e-07 ( -2.44599e-08  2.46069e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.016 sec. to    0.984 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.599676     ( -0.108049   0.0963701 )
Epeak [keV] : 9999.36      ( -9999.96 -9999.96 )
Norm@50keV  : 3.34228E-02    ( -0.00178534   0.00714172 )
------------------------------------------------------------
# Chi-Squared =          67.99 using 59 PHA bins.
# Reduced chi-squared =          1.214 for     56 degrees of freedom 
# Null hypothesis probability =   1.308297e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.86790 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.23463e-07 ( -2.4476e-08  2.4627e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.016 sec. to    0.984 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.889681   ( 0.889681   0.889681 )
beta        : -0.602836    ( -0.0997164   0.102605 )
Epeak [keV] : 16.2529      ( -16.2529 -16.2529 )
Norm@50keV   : 4.63654E-02    ( -0.0128202   614299 )
------------------------------------------------------------
# Chi-Squared =          67.89 using 59 PHA bins.
# Reduced chi-squared =          1.234 for     55 degrees of freedom 
# Null hypothesis probability =   1.136820e-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 Dec 19 09:40:22 EST 2010