batgrbproduct Analysis for Trigger=416076

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Tue Mar 16 18:08:17 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger416076/GCN5_download_cron
======================================================================

  Trigger: 00416076      Segment: 000

  BAT Trigger Time: 290398986.048   [s; MET]
      Trigger Stop: 290398988.096   [s; MET]
               UTC: 2010-03-16T02:23:00.430180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 252.031620948293   Dec: 71.8254875350265  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.09
     Image Trigger?:     NO
     Rate S/N Ratio:     13.7113092008021  [ if not an image trigger ]
     Image S/N Ratio:    8.09

  Flight Position:   [ source = BAT ]
    RA: 252.031620948293   Dec: 71.8254875350265  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 251.954543958062   Dec: 71.8182796681961  [deg; J2000]  
        { 16h 47m 49.1s , +71d 49' 05.8" }
         +/- 1.66469024191255 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.740812421076995 [arcmin] (formal 1-sigma fit error)
    SNR: 14.6868195956605
 
  Angular difference between Flight and Ground position is 1.506176 arcmin
 
  Partial Coding Fraction: 0.1621094    [ including projection effects ]

  Duration
     T90: 6.73600006103516 +/- 0.951865531564711
        Measured from: -0.69599986076355
                   to: 6.04000020027161     [s; relative to TRIGTIME]
     T50: 3.45600003004074 +/- 0.845430073540578
        Measured from: 0.600000143051147
                   to: 4.05600017309189     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.9640000462532     
                   to: 2.9640000462532     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.20800000429153     
                   to: 6.7600000500679     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.294537   0.402547   0.404888   0.081083
           0.041450   0.044313   0.038541   0.031574 [error]
 Peak      0.069018   0.089238   0.082347   0.006225
           0.015456   0.015658   0.014746   0.011330 [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 1.05e-07 1.99e-07 2.91e-07 9.07e-07 8.24e-07 1.50e-06   erg/cm2
              Error 2.02e-08 2.32e-08 3.75e-08 2.55e-07 9.29e-08 2.80e-07   erg/cm2
Peak flux Power-law 6.82e-01 7.35e-01 5.63e-01 7.05e-01 2.25e+00 2.68e+00   ph/cm2/s
              Error 2.20e-01 1.47e-01 1.14e-01 2.96e-01 4.11e-01 4.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.69e-08 2.05e-07 3.03e-07 5.65e-07 8.11e-07 1.17e-06   erg/cm2
              Error 1.91e-08 2.65e-08 4.43e-08 4.38e-07 9.67e-08 4.49e-07   erg/cm2
Peak flux Cutoff-PL 6.28e-01 7.56e-01 5.88e-01 4.93e-01 2.21e+00 2.46e+00   ph/cm2/s
              Error 2.65e-01 1.64e-01 1.36e-01 5.05e-01 4.22e-01 6.17e-01   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 2.59e+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    1.454    0.182    -      -           1.08e-02 1.14e-03   51.580 57
CPL   1.073    0.649     134.2    0.0      1.63e-02 0.00e+00   50.770 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.384    0.297    -      -           1.85e-02 3.22e-03   54.440 57
CPL   1.017    1.432     146.7    0.0      2.76e-02 5.88e-02   54.130 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: 6.592000 sec.
T50 in the 50-300 keV band: 3.712000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    7.968   -1.208    6.760
T90     6.736   -0.696    6.040
T50     3.456    0.600    4.056
Peak    1.000    1.964    2.964

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  251.9545 +71.8183 0.0130   44.0  144.1       1.2527    14.7  TRIG_00416076       
------------------------------------------
 
Foreground time interval of the image:
 -1.208   6.760 (delta_t =   7.968 [sec])
Background time interval of the image:
-239.048 -80.468 (delta_t = 158.580 [sec])
-79.048  -1.208 (delta_t =  77.840 [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   -1.208 sec. to    6.760 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45360     ( -0.181519   0.181965 )
Norm@50keV  : 1.08150E-02    ( -0.00113944   0.00113786 )
------------------------------------------------------------
# Chi-Squared =          51.58 using 59 PHA bins.
# Reduced chi-squared =         0.9049 for     57 degrees of freedom 
# Null hypothesis probability =   6.778838e-01
 
Photon flux (15-150 keV)    in 7.968 sec: 1.33399 ( -0.148063  0.148599 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.24074e-07 ( -9.26758e-08  9.3067e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.208 sec. to    6.760 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07266     ( -0.825196   0.47331 )
Epeak [keV] : 134.196      (   )
Norm@50keV  : 1.62770E-02    (     )
------------------------------------------------------------
# Chi-Squared =          50.77 using 59 PHA bins.
# Reduced chi-squared =         0.9065 for     56 degrees of freedom 
# Null hypothesis probability =   6.726901e-01
 
Photon flux (15-150 keV)    in 7.968 sec: 1.30979 ( -0.15546  0.15484 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.11477e-07 ( -9.68749e-08  9.65642e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.208 sec. to    6.760 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.07318   ( -0.467631   0.849264 )
beta        : -10.00000    ( 3.15472e+14   3.15472e+14 )
Epeak [keV] : 134.288      ( -58.1947 -134.271 )
Norm@50keV   : 1.62662E-02    ( -0.00637779   0.0216237 )
------------------------------------------------------------
# Chi-Squared =          50.77 using 59 PHA bins.
# Reduced chi-squared =         0.9230 for     55 degrees of freedom 
# Null hypothesis probability =   6.370313e-01
 
Photon flux (15-150 keV)    in 7.968 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 

Peak spectrum fit

Power-law model
Time interval is from    1.964 sec. to    2.964 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38448     ( -0.298016   0.296412 )
Norm@50keV  : 1.85067E-02    ( -0.00321694   0.00321418 )
------------------------------------------------------------
# Chi-Squared =          54.44 using 59 PHA bins.
# Reduced chi-squared =         0.9551 for     57 degrees of freedom 
# Null hypothesis probability =   5.717829e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.24596 ( -0.409671  0.411741 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.794e-07 ( -3.33336e-08  3.35563e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.964 sec. to    2.964 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.01749     ( -1.39682   1.46747 )
Epeak [keV] : 146.665      ( -146.664 -146.664 )
Norm@50keV  : 2.75567E-02    ( -0.0275568   0.0900292 )
------------------------------------------------------------
# Chi-Squared =          54.13 using 59 PHA bins.
# Reduced chi-squared =         0.9667 for     56 degrees of freedom 
# Null hypothesis probability =   5.458476e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.21343 ( -0.4223  0.42229 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7551e-07 ( -3.4562e-08  3.2276e-08 ) ergs/cm2
 
Band function
Time interval is from    1.964 sec. to    2.964 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.01742   ( 0.788955   0.788955 )
beta        : -2.34989    ( 2.20656   12.2018 )
Epeak [keV] : 146.615      ( -146.549 -146.549 )
Norm@50keV   : 2.75568E-02    ( -0.00990427   4824.31 )
------------------------------------------------------------
# Chi-Squared =          54.13 using 59 PHA bins.
# Reduced chi-squared =         0.9842 for     55 degrees of freedom 
# Null hypothesis probability =   5.077342e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Tue Mar 16 19:14:40 EDT 2010