batgrbproduct analysis for trigger=379449

batgrbproduct Analysis for Trigger=379449

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 v2.45
    Process Start Time (local time): Wed Dec 16 02:59:24 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger379449/GCN5_download_cron
======================================================================

  Trigger: 00379449      Segment: 000

  BAT Trigger Time: 282584352   [s; MET]
      Trigger Stop: 282584416   [s; MET]
               UTC: 2009-12-15T15:39:06.649900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 242.043599535328   Dec: 51.3951002102412  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.07
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.07

  Flight Position:   [ source = BAT ]
    RA: 242.043599535328   Dec: 51.3951002102412  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 242.037311321491   Dec: 51.3959970727118  [deg; J2000]  
        { 16h 08m 09.0s , +51d 23' 45.6" }
         +/- 3.75581515182964 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.45599707078009 [arcmin] (formal 1-sigma fit error)
    SNR: 4.59316837760601
 
  Angular difference between Flight and Ground position is 0.241480 arcmin
 
  Partial Coding Fraction: 0.7734375    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.195327   0.243699   0.030790   0.033147
           0.048673   0.050231   0.045269   0.041926 [error]
 Peak      0.195327   0.243699   0.030790   0.033147
           0.048673   0.050231   0.045269   0.041926 [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 7.11e-08 8.35e-08 7.07e-08 1.01e-07 2.61e-07 3.27e-07   erg/cm2
              Error 2.29e-08 2.44e-08 3.85e-08 1.08e-07 9.04e-08 1.61e-07   erg/cm2
Peak flux Power-law 3.62e-02 2.37e-02 1.01e-02 5.84e-03 7.29e-02 7.58e-02   ph/cm2/s
              Error 1.16e-02 6.68e-03 5.27e-03 6.66e-03 1.90e-02 2.04e-02   ph/cm2/s
 
Fluence   Cutoff-PL 6.74e-08 1.03e-07 3.36e-08 1.12e-09 2.05e-07 2.05e-07   erg/cm2
              Error 2.59e-08 3.78e-08 5.10e-08 1.00e-07 9.41e-08 1.59e-07   erg/cm2
Peak flux Cutoff-PL 3.40e-02 2.95e-02 5.42e-03 1.10e-04 6.90e-02 6.90e-02   ph/cm2/s
              Error 1.32e-02 1.05e-02 7.21e-03 5.49e-03 1.89e-02 1.82e-02   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    2.240    0.548    -      -           4.32e-04 1.75e-04   64.680 57
CPL  -1.172    0.000      29.9   -9.3      8.06e-02 0.00e+00   63.520 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.236    0.539    -      -           4.32e-04 1.74e-04   65.030 57
CPL  -1.317    0.000      29.8    0.0      1.02e-01 0.00e+00   63.910 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

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
  242.0373 +51.3960 0.0415   32.8 -160.8       0.4738     4.6  TRIG_00379449       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [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   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.24027     ( -0.494537   0.602328 )
Norm@50keV  : 4.31780E-04    ( -0.000176471   0.000172682 )
------------------------------------------------------------
# Chi-Squared =          64.68 using 59 PHA bins.
# Reduced chi-squared =          1.135 for     57 degrees of freedom 
# Null hypothesis probability =   2.262898e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.30303E-02 ( -0.0192363  0.0192567 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.61388e-07 ( -8.64019e-08  9.44723e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.17238     (     )
Epeak [keV] : 29.9139      ( -11.4234 -29.9564 )
Norm@50keV  : 8.06323E-02    (     )
------------------------------------------------------------
# Chi-Squared =          63.52 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     56 degrees of freedom 
# Null hypothesis probability =   2.287114e-01
 
Photon flux (15-150 keV)    in 64 sec: 6.86073E-02 ( -0.0188066  0.0199103 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.05303e-07 ( -6.3673e-08  1.2449e-07 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06555   ( 1.9109   0.589132 )
beta        : 10.00000    ( -1.97895e+15   -1.97895e+15 )
Epeak [keV] : 0.111567      ( -0.111567 -0.111567 )
Norm@50keV   : 1.96769E-20    ( -7.21402e-21   7.21402e-21 )
------------------------------------------------------------
# Chi-Squared =          83.96 using 59 PHA bins.
# Reduced chi-squared =          1.527 for     55 degrees of freedom 
# Null hypothesis probability =   7.187705e-03
 
Photon flux (15-150 keV)    in 64 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   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.23612     ( -0.485486   0.593021 )
Norm@50keV  : 4.31930E-04    ( -0.000175846   0.000172195 )
------------------------------------------------------------
# Chi-Squared =          65.03 using 59 PHA bins.
# Reduced chi-squared =          1.141 for     57 degrees of freedom 
# Null hypothesis probability =   2.172545e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.28928E-02 ( -0.018979  0.0190075 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.61299e-07 ( -8.62349e-08  9.43386e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.31691     (     )
Epeak [keV] : 29.8270      (   )
Norm@50keV  : 0.102434    (     )
------------------------------------------------------------
# Chi-Squared =          63.91 using 59 PHA bins.
# Reduced chi-squared =          1.141 for     56 degrees of freedom 
# Null hypothesis probability =   2.184102e-01
 
Photon flux (15-150 keV)    in 64 sec: 6.89526E-02 ( -0.0184354  0.0194067 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.06486e-07 ( -6.35027e-08  1.24184e-07 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.62784E-02   ( -5.08848   1.70966 )
beta        : -10.00000    ( 4.69479e+12   4.69479e+12 )
Epeak [keV] : 29.4332      ( -18.0929 -23.6865 )
Norm@50keV   : 1.25499E-02    ( -0.0136309   12.4885 )
------------------------------------------------------------
# Chi-Squared =          63.88 using 59 PHA bins.
# Reduced chi-squared =          1.161 for     55 degrees of freedom 
# Null hypothesis probability =   1.928527e-01
 
Photon flux (15-150 keV)    in 64 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: 2.24027     ( -0.494537   0.602328 )
Norm@50keV  : 4.31780E-04    ( -0.000176471   0.000172682 )
------------------------------------------------------------
# Chi-Squared =          64.68 using 59 PHA bins.
# Reduced chi-squared =          1.135 for     57 degrees of freedom 
# Null hypothesis probability =   2.262898e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.30303E-02 ( -0.0192363  0.0192567 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.61388e-07 ( -8.64019e-08  9.44723e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.17238     (     )
Epeak [keV] : 29.9139      ( -11.4234 -29.9564 )
Norm@50keV  : 8.06323E-02    (     )
------------------------------------------------------------
# Chi-Squared =          63.52 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     56 degrees of freedom 
# Null hypothesis probability =   2.287114e-01
 
Photon flux (15-150 keV)    in 64 sec: 6.86073E-02 ( -0.0188066  0.0199103 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.05303e-07 ( -6.3673e-08  1.2449e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06555   ( 1.9109   0.589132 )
beta        : 10.00000    ( -1.97895e+15   -1.97895e+15 )
Epeak [keV] : 0.111567      ( -0.111567 -0.111567 )
Norm@50keV   : 1.96769E-20    ( -7.21402e-21   7.21402e-21 )
------------------------------------------------------------
# Chi-Squared =          83.96 using 59 PHA bins.
# Reduced chi-squared =          1.527 for     55 degrees of freedom 
# Null hypothesis probability =   7.187705e-03
 
Photon flux (15-150 keV)    in 64 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)  = 8.34707e-08
S(50-100 keV) = 7.06656e-08

T90 vs. Hardness ratio plot

T90                                   = 64 sec.
Hardness ratio (energy fluence ratio) = 0.846592

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.24765
Count Ratio (50-100 keV) / (15-25 keV) = 0.157633

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 64.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4244  35.3122    3.8  41.7 -133.8   0.5475   3.1    2.4	Her X-1                       
285.1977  59.3981    2.7  57.3 -170.2   1.6219   4.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
128.100600 963.109000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4503  35.3555    0.7  18.4 -103.7   9.6992  16.5    0.9	Her X-1                       
299.5814  35.2009    0.3  43.6 -161.2  38.1587  39.3    0.4	Cyg X-1                       
308.1343  40.9770    1.7  45.3 -173.7   6.2556   6.9    1.8	Cyg X-3                       
326.1100  38.4875   40.0  57.5  177.5   1.1373   0.3   10.4	Cyg X-2                       
175.0460  48.1174    3.9  41.9   43.1   4.6087   2.9 ------	UNKNOWN                       
203.4566   2.4516    4.5  58.6  -23.0  13.1390   2.6 ------	UNKNOWN                       
236.0704   7.3761    3.5  44.3  -61.4   9.1513   3.3 ------	UNKNOWN

Plot creation:
Mon Feb 15 15:03:12 EST 2010