batgrbproduct Analysis for Trigger=412220

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue May 10 13:08:39 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger412220/SDC
======================================================================

  Trigger: 00412220      Segment: 000

  BAT Trigger Time: 287794719.744   [s; MET]
      Trigger Stop: 287794723.84   [s; MET]
               UTC: 2010-02-13T22:58:34.216240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 124.337626580859   Dec: 43.4552068987612  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.85
     Image Trigger?:     NO
     Rate S/N Ratio:     11.1803398874989  [ if not an image trigger ]
     Image S/N Ratio:    10.85

  Flight Position:   [ source = BAT ]
    RA: 124.337626580859   Dec: 43.4552068987612  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 124.317096148308   Dec: 43.4647895965918  [deg; J2000]  
        { 08h 17m 16.1s , +43d 27' 53.2" }
         +/- 1.25386732699136 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.545637499965257 [arcmin] (formal 1-sigma fit error)
    SNR: 22.0170420432024
 
  Angular difference between Flight and Ground position is 1.063035 arcmin
 
  Partial Coding Fraction: 0.5625    [ including projection effects ]

  Duration
     T90: 96 +/- 32
        Measured from: -15.744000017643
                   to: 80.255999982357     [s; relative to TRIGTIME]
     T50: 16 +/- 16
        Measured from: 0.255999982357025
                   to: 16.255999982357     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.75599998235703     
                   to: 8.75599998235703     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.744000017643     
                   to: 112.255999982357     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.102320   0.827037   0.346110   0.080395
           0.066667   0.066189   0.058482   0.050953 [error]
 Peak      0.026441   0.021483   0.009095  -0.002996
           0.006626   0.006928   0.005948   0.004955 [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 3.57e-07 3.82e-07 2.90e-07 3.58e-07 1.17e-06 1.39e-06   erg/cm2
              Error 3.96e-08 3.45e-08 5.17e-08 1.21e-07 1.19e-07 1.90e-07   erg/cm2
Peak flux Power-law 2.57e-01 1.70e-01 7.33e-02 4.33e-02 5.22e-01 5.44e-01   ph/cm2/s
              Error 1.05e-01 5.86e-02 4.56e-02 5.57e-02 1.68e-01 1.79e-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 2.39e-01 1.91e-01 7.37e-02 5.15e-01 5.18e-01 0.00e+00   ph/cm2/s
              Error 1.23e-01 8.04e-02 1.67e-01 2.20e-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    2.398    0.180    -      -           9.34e-04 1.21e-04   49.280 57
CPL   1.812    0.580      11.4    0.0      2.20e-03 0.00e+00   47.500 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    2.216    0.690    -      -           3.13e-03 1.51e-03   57.390 57
CPL   1.321    2.316      31.8    0.0      1.04e-02 0.00e+00   57.010 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: 26.624000 sec.
T50 in the 50-300 keV band: 14.528000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  128.000  -15.744  112.256
T90    96.000  -15.744   80.256
T50    16.000    0.256   16.256
Peak    1.000    7.756    8.756

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  124.3171 +43.4648 0.0087   35.1   15.8       2.1539    22.0  TRIG_00412220       
------------------------------------------
 
Foreground time interval of the image:
-15.744  34.957 (delta_t =  50.701 [sec])
Background time interval of the image:
-239.744 -15.744 (delta_t = 224.000 [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  -15.744 sec. to  112.256 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.39839     ( -0.17434   0.18501 )
Norm@50keV  : 9.33605E-04    ( -0.000121456   0.00012014 )
------------------------------------------------------------
# Chi-Squared =          49.28 using 59 PHA bins.
# Reduced chi-squared =         0.8645 for     57 degrees of freedom 
# Null hypothesis probability =   7.566147e-01
 
Photon flux (15-150 keV)    in 128 sec: 0.172577 ( -0.0144821  0.0144851 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.16527e-06 ( -1.17419e-07  1.20178e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -15.744 sec. to  112.256 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.81190     ( -0.973976   0.185359 )
Epeak [keV] : 11.4488      (   )
Norm@50keV  : 2.19521E-03    (     )
------------------------------------------------------------
# Chi-Squared =          47.50 using 59 PHA bins.
# Reduced chi-squared =         0.8482 for     56 degrees of freedom 
# Null hypothesis probability =   7.835536e-01
 
Photon flux (15-150 keV)    in 128 sec: 0.168785 ( -0.01518  0.015207 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from  -15.744 sec. to  112.256 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99202   ( -251.27   -241.27 )
beta        : -2.68333    ( -0.178569   0.250559 )
Epeak [keV] : 21.7833      ( -3.03303 2.39899 )
Norm@50keV   : 547.105    ( -279.204   664.308 )
------------------------------------------------------------
# Chi-Squared =          41.92 using 59 PHA bins.
# Reduced chi-squared =         0.7622 for     55 degrees of freedom 
# Null hypothesis probability =   9.027960e-01
 
Photon flux (15-150 keV)    in 128 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    7.756 sec. to    8.756 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.21595     ( -0.581429   0.797658 )
Norm@50keV  : 3.12827E-03    ( -0.00156877   0.00145903 )
------------------------------------------------------------
# Chi-Squared =          57.39 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     57 degrees of freedom 
# Null hypothesis probability =   4.607447e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.522278 ( -0.168157  0.168229 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.94798e-08 ( -1.17845e-08  1.26735e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    7.756 sec. to    8.756 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32131     ( -3.86864   0.762636 )
Epeak [keV] : 31.7716      (   )
Norm@50keV  : 1.03980E-02    (     )
------------------------------------------------------------
# Chi-Squared =          57.01 using 59 PHA bins.
# Reduced chi-squared =          1.018 for     56 degrees of freedom 
# Null hypothesis probability =   4.371788e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.515040 ( -0.167929  0.165285 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    7.756 sec. to    8.756 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.55991   ( 1.56001   2.86161 )
beta        : -9.36832    ( 9.99768   19.9977 )
Epeak [keV] : 29.6438      ( -29.5091 -29.5091 )
Norm@50keV   : 7.38329E-03    ( -0.00740139   3.65019e+06 )
------------------------------------------------------------
# Chi-Squared =          57.05 using 59 PHA bins.
# Reduced chi-squared =          1.037 for     55 degrees of freedom 
# Null hypothesis probability =   3.989442e-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:
Thu May 26 14:26:06 EDT 2011