batgrbproduct analysis for trigger=354542

batgrbproduct Analysis for Trigger=354542

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
3) This page will be updated for up to 8 downlinks after the trigger.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Wed Jun 10 17:03:01 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger354542/GCN5_download_cron
======================================================================

  Trigger: 00354542      Segment: 000

  BAT Trigger Time: 266313272   [s; MET]
      Trigger Stop: 266313592   [s; MET]
               UTC: 2009-06-10T07:54:27.185360    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 248.175639714661   Dec: -47.3913525313119  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.69
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.69

  Flight Position:   [ source = BAT ]
    RA: 248.175639714661   Dec: -47.3913525313119  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 248.189822823019   Dec: -47.4392334314149  [deg; J2000]  
        { 16h 32m 45.6s , -47d 26' 21.2" }
         +/- 2.67046866302199 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.38309806879955 [arcmin] (formal 1-sigma fit error)
    SNR: 7.47666092989409
 
  Angular difference between Flight and Ground position is 2.929998 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 320 +/- 
        Measured from: 0
                   to: 320     [s; relative to TRIGTIME]
     T50: 320 +/- 
        Measured from: 0
                   to: 320     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 320 second)
        Measured from: 0     
                   to: 320     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 320     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.722056   0.587088   0.304242   0.115466
           0.096990   0.091778   0.079126   0.067642 [error]
 Peak      0.722056   0.587088   0.304242   0.115466
           0.096990   0.091778   0.079126   0.067642 [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 1.76e-07 2.51e-07 2.66e-07 5.21e-07 8.54e-07 1.21e-06   erg/cm2
              Error 4.07e-08 4.01e-08 7.63e-08 3.06e-07 1.73e-07 3.85e-07   erg/cm2
Peak flux Power-law 1.80e-02 1.41e-02 7.47e-03 5.73e-03 4.22e-02 4.53e-02   ph/cm2/s
              Error 4.00e-03 2.19e-03 2.05e-03 3.04e-03 6.49e-03 7.23e-03   ph/cm2/s
 
Fluence   Cutoff-PL 1.76e-07 2.51e-07 2.66e-07 5.17e-07 8.54e-07 1.21e-06   erg/cm2
              Error 4.07e-08 4.02e-08 7.64e-08 3.03e-07 1.73e-07 3.83e-07   erg/cm2
Peak flux Cutoff-PL 1.80e-02 1.41e-02 7.47e-03 5.68e-03 4.22e-02 4.53e-02   ph/cm2/s
              Error 4.00e-03 2.19e-03 2.05e-03 3.02e-03 6.49e-03 7.22e-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    1.916    0.322    -      -           2.90e-04 5.97e-05   76.590 57
CPL   2.538    0.000     185.1    0.0      1.45e-04 0.00e+00   76.380 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.921    0.309    -      -           2.92e-04 5.96e-05   77.380 57
CPL   2.311    0.000     116.9    0.0      1.83e-04 0.00e+00   76.930 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  320.000    0.000  320.000
T90   320.000    0.000  320.000
T50   320.000    0.000  320.000
Peak  320.000    0.000  320.000

Click here for the BAT GCN circular template

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  248.1898 -47.4392 0.0259    9.5  112.8       1.7407     7.5  TRIG_00354542       
------------------------------------------
 
Foreground time interval of the image:
  0.000 320.000 (delta_t = 320.000 [sec])
Background time interval of the image:

Lightcurves

Notes:

1) All plots contain as much data as has been downloaded to date.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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)

Flight mask-tagged light curves

Caution: Mask-weight map is always using the same on-axis map

Quad-rate summed light curves (from T0-300 to T0+1000)

Spectra

Notes:

1) The fitting includes the systematic errors.
2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.

Time averaged spectrum fit using the pre-slew DRM

Power-law model

Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.91569     ( -0.310704   0.333512 )
Norm@50keV  : 2.90373E-04    ( -6.10662e-05   5.84141e-05 )
------------------------------------------------------------
# Chi-Squared =          76.59 using 59 PHA bins.
# Reduced chi-squared =          1.344 for     57 degrees of freedom 
# Null hypothesis probability =   4.276959e-02
 
Photon flux (15-150 keV)    in 320 sec: 4.19519E-02 ( -0.00665633  0.00665683 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.54429e-07 ( -1.691e-07  1.75999e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to  320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.53790     (     )
Epeak [keV] : 185.111      (   )
Norm@50keV  : 1.44614E-04    (     )
------------------------------------------------------------
# Chi-Squared =          76.38 using 59 PHA bins.
# Reduced chi-squared =          1.364 for     56 degrees of freedom 
# Null hypothesis probability =   3.647983e-02
 
Photon flux (15-150 keV)    in 320 sec: 4.19358E-02 ( -0.0066538  0.0066546 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.5423e-07 ( -1.69085e-07  1.75997e-07 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99856   ( -1324.29   -1324.29 )
beta        : -2.12540    ( -0.666477   0.355588 )
Epeak [keV] : 23.7785      ( -23.7298 4.27681 )
Norm@50keV   : 62.8934    ( -42.7217   184826 )
------------------------------------------------------------
# Chi-Squared =          75.56 using 59 PHA bins.
# Reduced chi-squared =          1.374 for     55 degrees of freedom 
# Null hypothesis probability =   3.434037e-02
 
Photon flux (15-150 keV)    in 320 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Peak spectrum fit

Power-law model

Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.92056     ( -0.297791   0.32105 )
Norm@50keV  : 2.91659E-04    ( -6.08742e-05   5.8298e-05 )
------------------------------------------------------------
# Chi-Squared =          77.38 using 59 PHA bins.
# Reduced chi-squared =          1.358 for     57 degrees of freedom 
# Null hypothesis probability =   3.751362e-02
 
Photon flux (15-150 keV)    in 320 sec: 4.22263E-02 ( -0.00649023  0.00649026 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.58275e-07 ( -1.6834e-07  1.75304e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to  320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.31073     (     )
Epeak [keV] : 116.906      (   )
Norm@50keV  : 1.82770E-04    (     )
------------------------------------------------------------
# Chi-Squared =          76.93 using 59 PHA bins.
# Reduced chi-squared =          1.374 for     56 degrees of freedom 
# Null hypothesis probability =   3.319750e-02
 
Photon flux (15-150 keV)    in 320 sec: 4.22109E-02 ( -0.0064882  0.0064882 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.58077e-07 ( -1.68326e-07  1.75293e-07 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.78118   ( -10.6896   -10.6896 )
beta        : -2.11251    ( -0.678963   0.360535 )
Epeak [keV] : 22.6952      ( -22.6952 4.94805 )
Norm@50keV   : 58.6041    ( -10.2235   70.9441 )
------------------------------------------------------------
# Chi-Squared =          76.48 using 59 PHA bins.
# Reduced chi-squared =          1.391 for     55 degrees of freedom 
# Null hypothesis probability =   2.929382e-02
 
Photon flux (15-150 keV)    in 320 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.91569     ( -0.310704   0.333512 )
Norm@50keV  : 2.90373E-04    ( -6.10662e-05   5.84141e-05 )
------------------------------------------------------------
# Chi-Squared =          76.59 using 59 PHA bins.
# Reduced chi-squared =          1.344 for     57 degrees of freedom 
# Null hypothesis probability =   4.276959e-02
 
Photon flux (15-150 keV)    in 320 sec: 4.19519E-02 ( -0.00665633  0.00665683 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.54429e-07 ( -1.691e-07  1.75999e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.53790     (     )
Epeak [keV] : 185.111      (   )
Norm@50keV  : 1.44614E-04    (     )
------------------------------------------------------------
# Chi-Squared =          76.38 using 59 PHA bins.
# Reduced chi-squared =          1.364 for     56 degrees of freedom 
# Null hypothesis probability =   3.647983e-02
 
Photon flux (15-150 keV)    in 320 sec: 4.19358E-02 ( -0.0066538  0.0066546 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.5423e-07 ( -1.69085e-07  1.75997e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99856   ( -1324.29   -1324.29 )
beta        : -2.12540    ( -0.666477   0.355588 )
Epeak [keV] : 23.7785      ( -23.7298 4.27681 )
Norm@50keV   : 62.8934    ( -42.7217   184826 )
------------------------------------------------------------
# Chi-Squared =          75.56 using 59 PHA bins.
# Reduced chi-squared =          1.374 for     55 degrees of freedom 
# Null hypothesis probability =   3.434037e-02
 
Photon flux (15-150 keV)    in 320 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 2.50557e-07
S(50-100 keV) = 2.65636e-07

T90 vs. Hardness ratio plot

T90                                   = 320 sec.
Hardness ratio (energy fluence ratio) = 1.06018

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.813078
Count Ratio (50-100 keV) / (15-25 keV) = 0.421355

Mask shadow pattern

IMX = 0, IMY = 0

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Time interval of the image:

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
0.000000 320.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.2587 -60.6551    3.3  35.1  -63.8   1.5449   3.5    2.6	Cen X-3                       
186.7173 -62.6103   48.7  27.1  -64.0  -0.0764  -0.2    9.7	GX 301-2                      
244.9906 -15.6529    1.1  39.0   75.7  10.5526  10.1    1.0	Sco X-1                       
255.9999 -37.8378    0.8  20.7  109.2   3.9343  13.6    0.7	4U 1700-377                   
256.4161 -36.3759    2.4  22.1  107.9   1.4098   4.8    3.0	GX 349+2                      
262.9537 -24.6346    3.3  35.1  106.9   1.9239   3.5    7.3	GX 1+4                        
264.7625 -44.5821    5.8  20.0  136.5   0.5572   2.0    8.0	4U 1735-44                    
270.1938 -25.0200    4.6  37.9  116.9   1.7750   2.5    6.1	GX 5-1                        
270.3306 -25.8561    4.9  37.2  117.8   1.5287   2.3    7.0	GRS 1758-258                  
275.8738 -30.3439    3.3  36.3  128.8   1.9598   3.5    3.0	H1820-303                     
285.0245 -24.9311  199.6  45.5  133.7  -0.0652  -0.1    0.9	HT1900.1-2455                 
248.1891 -47.4392    1.6   9.5  112.8   1.7391   7.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
369.400590 963.040900
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
186.3080 -62.7203   14.7  36.8  -70.1   0.9976   0.8   10.0	GX 301-2                      
244.9768 -15.6341    0.4  31.9   61.7  23.7705  31.0    0.4	Sco X-1                       
255.9730 -37.8374    0.4  11.1  101.3  10.6162  27.4    0.8	4U 1700-377                   
256.3330 -36.4327    2.1  12.5   99.4   2.1873   5.6    5.0	GX 349+2                      
263.0266 -24.8061    2.6  25.5  100.3   2.6864   4.5    3.8	GX 1+4                        
264.6407 -44.3588    7.8  11.9  148.7   0.6362   1.5    7.0	4U 1735-44                    
270.3510 -25.1327    3.0  28.4  113.6   2.6248   3.9    4.8	GX 5-1                        
270.3933 -25.6407    6.5  28.0  114.2   1.2745   1.9    7.9	GRS 1758-258                  
274.1365 -13.9146    0.0  39.9  109.1  -1.2480  -0.8   10.5	GX 17+2                       
275.9640 -30.4013    2.4  27.3  129.0   2.8243   4.8    2.9	H1820-303                     
284.9174 -25.0469    4.6  36.6  133.0  -2.4403  -2.5   10.0	HT1900.1-2455                 
263.0481 -33.8317    2.0  17.6  112.5   2.6511   5.8 ------	UNKNOWN                       
265.8389 -38.3573    2.7  15.7  128.9   1.8709   4.3 ------	UNKNOWN                       
270.9736 -39.9528    3.4  18.0  141.5   1.5295   3.4 ------	UNKNOWN                       
203.5430 -31.9317    2.8  37.0  -14.2   2.3767   4.2 ------	UNKNOWN                       
353.3994 -78.5533    3.2  46.7 -127.7   8.4672   3.6 ------	UNKNOWN

Plot creation:
Tue Feb 16 13:09:21 EST 2010