batgrbproduct Analysis for Trigger=360068

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sun Aug 16 09:56:40 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger360068/GCN5_download_cron
======================================================================

  Trigger: 00360068      Segment: 000

  BAT Trigger Time: 272071304.256   [s; MET]
      Trigger Stop: 272071304.768   [s; MET]
               UTC: 2009-08-15T23:21:39.254980    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 64.473057422274   Dec: -65.9079370199645  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.24
     Image Trigger?:     NO
     Rate S/N Ratio:     9.8488578017961  [ if not an image trigger ]
     Image S/N Ratio:    6.24

  Flight Position:   [ source = BAT ]
    RA: 64.473057422274   Dec: -65.9079370199645  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 64.4898356674113   Dec: -65.9426407948409  [deg; J2000]  
        { 04h 17m 57.6s , -65d 56' 33.5" }
         +/- 2.74908112909581 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.30923995140935 [arcmin] (formal 1-sigma fit error)
    SNR: 7.17311155190179
 
  Angular difference between Flight and Ground position is 2.122335 arcmin
 
  Partial Coding Fraction: 0.765625    [ including projection effects ]

  Duration
     T90: 0.576000034809113 +/- 0.271529006335861
        Measured from: -0.0319998860359192
                   to: 0.544000148773193     [s; relative to TRIGTIME]
     T50: 0.255999982357025 +/- 0.143108374017273
        Measured from: 0.160000145435333
                   to: 0.416000127792358     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.180000007152557     
                   to: 0.819999992847443     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0320000052452087     
                   to: 0.671999990940094     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.008696   0.018485   0.025174   0.006284
           0.005074   0.005396   0.004830   0.004138 [error]
 Peak      0.008696   0.018485   0.025174   0.006284
           0.005074   0.005396   0.004830   0.004138 [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 2.86e-09 7.60e-09 1.62e-08 8.99e-08 4.38e-08 1.17e-07   erg/cm2
              Error 1.59e-09 2.55e-09 4.36e-09 5.88e-08 1.17e-08 6.02e-08   erg/cm2
Peak flux Power-law 1.30e-01 1.86e-01 1.99e-01 3.95e-01 6.37e-01 9.09e-01   ph/cm2/s
              Error 7.30e-02 6.46e-02 5.22e-02 2.34e-01 1.70e-01 2.55e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.39e-09 7.83e-09 1.74e-08 4.33e-08 4.27e-08 8.58e-08   erg/cm2
              Error 1.96e-09 2.89e-09 5.61e-09 7.84e-08 1.25e-08 0.00e+00   erg/cm2
Peak flux Cutoff-PL 1.07e-01 1.90e-01 2.14e-01 2.26e-01 6.20e-01 7.37e-01   ph/cm2/s
              Error 8.91e-02 5.38e-02 6.95e-02 2.86e-01 1.77e-01 3.50e-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 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    0.904    0.467    -      -           5.55e-03 1.49e-03   52.030 57
CPL   0.260    1.485     161.8    0.0      1.04e-02 1.06e-01   51.750 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.904    0.467    -      -           5.55e-03 1.49e-03   52.030 57
CPL   0.260    1.485     161.8    0.0      1.04e-02 8.38e-02   51.750 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    0.704   -0.032    0.672
T90     0.576   -0.032    0.544
T50     0.256    0.160    0.416
Peak    1.000   -0.180    0.820

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   64.4898 -65.9426 0.0268   20.1  126.0       0.0705     7.2  TRIG_00360068       
------------------------------------------
 
Foreground time interval of the image:
 -0.032   0.672 (delta_t =   0.704 [sec])
Background time interval of the image:
-60.256  -0.032 (delta_t =  60.224 [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   -0.032 sec. to    0.672 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.904260     ( -0.49282   0.440587 )
Norm@50keV  : 5.55151E-03    ( -0.00150927   0.00146358 )
------------------------------------------------------------
# Chi-Squared =          52.03 using 59 PHA bins.
# Reduced chi-squared =         0.9128 for     57 degrees of freedom 
# Null hypothesis probability =   6.615936e-01
 
Photon flux (15-150 keV)    in 0.704 sec: 0.637224 ( -0.169395  0.171194 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.37899e-08 ( -1.16306e-08  1.17335e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.032 sec. to    0.672 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.259658     ( -3.2295   -0.259539 )
Epeak [keV] : 161.797      ( -161.773 -161.773 )
Norm@50keV  : 1.03981E-02    ( -0.0103997   0.201906 )
------------------------------------------------------------
# Chi-Squared =          51.75 using 59 PHA bins.
# Reduced chi-squared =         0.9241 for     56 degrees of freedom 
# Null hypothesis probability =   6.363867e-01
 
Photon flux (15-150 keV)    in 0.704 sec: 0.619817 ( -0.181732  0.178586 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.26713e-08 ( -1.26881e-08  1.22991e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.032 sec. to    0.672 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.125589   ( 0.789618   0.789618 )
beta        : -1.48897    ( 1.48086   1.48086 )
Epeak [keV] : 141.279      ( -141.26 330.273 )
Norm@50keV   : 1.19305E-02    ( -0.0119504   400937 )
------------------------------------------------------------
# Chi-Squared =          51.67 using 59 PHA bins.
# Reduced chi-squared =         0.9395 for     55 degrees of freedom 
# Null hypothesis probability =   6.025016e-01
 
Photon flux (15-150 keV)    in 0.704 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]    : 23.6845  (-6.42929  11.3819)
R^2/D10^2   : 1.87515E-02  (-0.0130265   0.0326812)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          52.71 using 59 PHA bins.
# Reduced chi-squared =         0.9248 for     57 degrees of freedom 
# Null hypothesis probability =   6.365431e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.323e-09   8.016e-10
25- 50  7.294e-09   3.754e-09
50-150  3.052e-08   1.737e-08
15-150  3.913e-08   2.075e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.999       (      )
Norm        : 2.62411       (-2.62411     -2.62411)
------------------------------------------------------------
# Chi-Squared =          57.75 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.474680e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.595e-09   2.683e-09
25- 50  8.839e-09   4.998e-09
50-150  1.939e-08   1.144e-08
15-150  3.282e-08   1.874e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.33137        (-1.79981      35.7355)
R1^2/D10^2  : 8411.96        (      )
kT2 [keV]   : 24.6652        (-6.88978      12.5732)
R2^2/D10^2  : 1.63071E-02    (-0.0115903   0.0161365)
------------------------------------------------------------
# Chi-Squared =          51.23 using 59 PHA bins.
# Chi-Squared =          51.10 using 59 PHA bins.
# Reduced chi-squared =         0.9314 for     55 degrees of freedom 
# Reduced chi-squared =         0.9291 for     55 degrees of freedom 
# Null hypothesis probability =   6.195660e-01
# Null hypothesis probability =   6.244324e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.336e-09   1.099e-09
25- 50  6.804e-09   4.102e-09
50-150  3.126e-08   1.976e-08
15-150  4.040e-08   2.311e-08

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.032 sec. to    0.672 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.904260     ( -0.49282   0.440587 )
Norm@50keV  : 5.55151E-03    ( -0.00150927   0.00146358 )
------------------------------------------------------------
# Chi-Squared =          52.03 using 59 PHA bins.
# Reduced chi-squared =         0.9128 for     57 degrees of freedom 
# Null hypothesis probability =   6.615936e-01
 
Photon flux (15-150 keV)    in 0.704 sec: 0.637209 ( -0.169379  0.171198 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.37899e-08 ( -1.16306e-08  1.17335e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.032 sec. to    0.672 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.259658     ( -3.2295   -0.259539 )
Epeak [keV] : 161.797      ( -161.773 -161.773 )
Norm@50keV  : 1.03981E-02    ( -0.0103997   0.157259 )
------------------------------------------------------------
# Chi-Squared =          51.75 using 59 PHA bins.
# Reduced chi-squared =         0.9241 for     56 degrees of freedom 
# Null hypothesis probability =   6.363867e-01
 
Photon flux (15-150 keV)    in 0.704 sec: 0.619824 ( -0.181739  0.171841 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.26716e-08 ( -1.26883e-08  1.23174e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.032 sec. to    0.672 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.102577   ( 0.789618   0.789618 )
beta        : -1.46912    ( 1.47367   1.47367 )
Epeak [keV] : 138.332      ( -138.353 303.745 )
Norm@50keV   : 1.22518E-02    ( -0.0122544   64.0213 )
------------------------------------------------------------
# Chi-Squared =          51.67 using 59 PHA bins.
# Reduced chi-squared =         0.9395 for     55 degrees of freedom 
# Null hypothesis probability =   6.025101e-01
 
Photon flux (15-150 keV)    in 0.704 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]    : 23.6845  (-6.42929  11.3819)
R^2/D10^2   : 1.87515E-02  (-0.0130265   0.0326812)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          52.71 using 59 PHA bins.
# Reduced chi-squared =         0.9248 for     57 degrees of freedom 
# Null hypothesis probability =   6.365431e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.323e-09   8.532e-10
25- 50  7.294e-09   4.323e-09
50-150  3.052e-08   1.704e-08
15-150  3.913e-08   2.353e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.999       (      )
Norm        : 2.62410       (-2.6241     -2.6241)
------------------------------------------------------------
# Chi-Squared =          57.75 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.474680e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.595e-09   2.610e-09
25- 50  8.839e-09   5.231e-09
50-150  1.939e-08   1.135e-08
15-150  3.282e-08   1.943e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.33137        (-1.79981      36.4856)
R1^2/D10^2  : 8411.96        (      )
kT2 [keV]   : 24.6652        (-6.88978      12.5732)
R2^2/D10^2  : 1.63071E-02    (-0.0115903   0.0161366)
------------------------------------------------------------
# Chi-Squared =          51.23 using 59 PHA bins.
# Chi-Squared =          51.10 using 59 PHA bins.
# Reduced chi-squared =         0.9314 for     55 degrees of freedom 
# Reduced chi-squared =         0.9291 for     55 degrees of freedom 
# Null hypothesis probability =   6.195660e-01
# Null hypothesis probability =   6.244324e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.336e-09   9.785e-10
25- 50  6.804e-09   4.075e-09
50-150  3.126e-08   1.861e-08
15-150  4.040e-08   2.374e-08
Plot creation:
Sun Aug 16 10:08:34 EDT 2009