batgrbproduct Analysis for Trigger=410087

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri May 27 15:07:59 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger410087/SDC
======================================================================

  Trigger: 00410087      Segment: 000

  BAT Trigger Time: 286487952   [s; MET]
      Trigger Stop: 286488440   [s; MET]
               UTC: 2010-01-29T19:59:06.517200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 248.535042476768   Dec: -47.3755545925531  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.68
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.68

  Flight Position:   [ source = BAT ]
    RA: 248.535042476768   Dec: -47.3755545925531  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 248.599187647812   Dec: -47.3908697153995  [deg; J2000]  
        { 16h 34m 23.8s , -47d 23' 27.1" }
         +/- 2.7911198317692 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.80491807486584 [arcmin] (formal 1-sigma fit error)
    SNR: 7.01927045640149
 
  Angular difference between Flight and Ground position is 2.763197 arcmin
 
  Partial Coding Fraction: 0.8515625    [ including projection effects ]

  Duration
     T90: 488 +/- 
        Measured from: 0
                   to: 488     [s; relative to TRIGTIME]
     T50: 488 +/- 
        Measured from: 0
                   to: 488     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 488 second)
        Measured from: 0     
                   to: 488     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 488     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.387840   0.824368   0.409844   0.097594
           0.140336   0.123090   0.111925   0.109764 [error]
 Peak      1.387840   0.824368   0.409844   0.097594
           0.140336   0.123090   0.111925   0.109764 [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 4.06e-07 4.06e-07 2.85e-07 3.16e-07 1.22e-06 1.41e-06   erg/cm2
              Error 7.62e-08 6.60e-08 1.01e-07 2.19e-07 2.21e-07 3.50e-07   erg/cm2
Peak flux Power-law 2.74e-02 1.53e-02 5.36e-03 2.46e-03 4.94e-02 5.05e-02   ph/cm2/s
              Error 5.29e-03 2.38e-03 1.83e-03 1.59e-03 6.86e-03 7.04e-03   ph/cm2/s
 
Fluence   Cutoff-PL 4.06e-07 4.06e-07 2.84e-07 3.13e-07 1.22e-06 1.41e-06   erg/cm2
              Error 7.62e-08 4.92e-08 1.01e-07 1.83e-07 2.21e-07 3.47e-07   erg/cm2
Peak flux Cutoff-PL 2.74e-02 1.53e-02 5.35e-03 2.44e-03 4.94e-02 5.05e-02   ph/cm2/s
              Error 5.16e-03 2.37e-03 1.89e-03 1.90e-03 6.85e-03 7.02e-03   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    2.512    0.359    -      -           2.50e-04 6.33e-05   44.510 57
CPL   1.831    0.000      15.7    0.0      5.07e-04 0.00e+00   48.330 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    2.512    0.359    -      -           2.50e-04 6.33e-05   44.510 57
CPL   1.831    0.000      15.7    0.0      5.07e-04 0.00e+00   48.330 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  488.000    0.000  488.000
T90   488.000    0.000  488.000
T50   488.000    0.000  488.000
Peak  488.000    0.000  488.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  248.5992 -47.3909 0.0273   29.6  -14.9       2.6437     7.0  TRIG_00410087       
------------------------------------------
 
Foreground time interval of the image:
  0.000 488.000 (delta_t = 488.000 [sec])
Background time interval of the image:

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  488.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.51175     ( -0.339123   0.379303 )
Norm@50keV  : 2.49577E-04    ( -6.36234e-05   6.29442e-05 )
------------------------------------------------------------
# Chi-Squared =          44.51 using 59 PHA bins.
# Reduced chi-squared =         0.7809 for     57 degrees of freedom 
# Null hypothesis probability =   8.857184e-01
 
Photon flux (15-150 keV)    in 488 sec: 4.93833E-02 ( -0.00685887  0.00685966 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22178e-06 ( -2.14871e-07  2.27759e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  488.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83091     (     )
Epeak [keV] : 15.6532      (   )
Norm@50keV  : 5.06887E-04    (     )
------------------------------------------------------------
# Chi-Squared =          48.33 using 59 PHA bins.
# Reduced chi-squared =         0.8630 for     56 degrees of freedom 
# Null hypothesis probability =   7.571700e-01
 
Photon flux (15-150 keV)    in 488 sec: 4.93600E-02 ( -0.0068525  0.0068536 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22138e-06 ( -2.14071e-07  2.27018e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  488.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.63756   ( 1.63763   1.63763 )
beta        : -2.51504    ( 2.51631   0.343211 )
Epeak [keV] : 7.47879      ( -7.2342 383.1 )
Norm@50keV   : 1.46238E-03    ( -0.00064845   170693 )
------------------------------------------------------------
# Chi-Squared =          44.50 using 59 PHA bins.
# Reduced chi-squared =         0.8092 for     55 degrees of freedom 
# Null hypothesis probability =   8.432504e-01
 
Photon flux (15-150 keV)    in 488 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  488.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.51175     ( -0.339123   0.379303 )
Norm@50keV  : 2.49577E-04    ( -6.36234e-05   6.29442e-05 )
------------------------------------------------------------
# Chi-Squared =          44.51 using 59 PHA bins.
# Reduced chi-squared =         0.7809 for     57 degrees of freedom 
# Null hypothesis probability =   8.857184e-01
 
Photon flux (15-150 keV)    in 488 sec: 4.93833E-02 ( -0.00685887  0.00685966 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22178e-06 ( -2.14871e-07  2.27759e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  488.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83091     (     )
Epeak [keV] : 15.6532      (   )
Norm@50keV  : 5.06887E-04    (     )
------------------------------------------------------------
# Chi-Squared =          48.33 using 59 PHA bins.
# Reduced chi-squared =         0.8630 for     56 degrees of freedom 
# Null hypothesis probability =   7.571700e-01
 
Photon flux (15-150 keV)    in 488 sec: 4.93600E-02 ( -0.0068525  0.0068536 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22138e-06 ( -2.14071e-07  2.27018e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  488.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.63756   ( 1.63763   1.63763 )
beta        : -2.51504    ( 2.51631   0.343211 )
Epeak [keV] : 7.47879      ( -7.2342 383.1 )
Norm@50keV   : 1.46238E-03    ( -0.00064845   170693 )
------------------------------------------------------------
# Chi-Squared =          44.50 using 59 PHA bins.
# Reduced chi-squared =         0.8092 for     55 degrees of freedom 
# Null hypothesis probability =   8.432504e-01
 
Photon flux (15-150 keV)    in 488 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:
Fri May 27 15:39:17 EDT 2011