batgrbproduct analysis for trigger=356516

batgrbproduct Analysis for Trigger=356516

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): Sun Jul  5 18:03:11 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger356516/GCN5_download_cron
======================================================================

  Trigger: 00356516      Segment: 000

  BAT Trigger Time: 268463496   [s; MET]
      Trigger Stop: 268463560   [s; MET]
               UTC: 2009-07-05T05:11:31.116000    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 318.484499859067   Dec: 62.5784594775142  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.02
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.02

  Flight Position:   [ source = BAT ]
    RA: 318.484499859067   Dec: 62.5784594775142  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 318.291713630836   Dec: 62.4874232551467  [deg; J2000]  
        { 21h 13m 10.0s , +62d 29' 14.7" }
         +/- 5.00151989899859 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.58990081824373 [arcmin] (formal 1-sigma fit error)
    SNR: 3.05071217777573
 
  Angular difference between Flight and Ground position is 7.635436 arcmin
 
  Partial Coding Fraction: 0.953125    [ 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     0.183874   0.131481  -0.012467  -0.040437
           0.040813   0.042694   0.038701   0.035873 [error]
 Peak      0.183874   0.131481  -0.012467  -0.040437
           0.040813   0.042694   0.038701   0.035873 [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 4.43e-08 4.79e-08 3.66e-08 4.50e-08 1.45e-07 1.77e-07   erg/cm2
              Error 1.68e-08 1.89e-08 2.48e-08 5.81e-08 6.42e-08 9.98e-08   erg/cm2
Peak flux Power-law 2.28e-02 1.38e-02 5.19e-03 2.61e-03 4.33e-02 4.50e-02   ph/cm2/s
              Error 8.65e-03 5.25e-03 4.50e-03 3.42e-03 1.50e-02 1.59e-02   ph/cm2/s
 
Fluence   Cutoff-PL 4.33e-08 7.25e-08 1.70e-08 1.84e-10 1.33e-07 1.33e-07   erg/cm2
              Error 1.87e-08 2.86e-08 2.51e-08 5.30e-09 4.97e-08 4.97e-08   erg/cm2
Peak flux Cutoff-PL 2.16e-02 2.10e-02 2.75e-03 1.59e-05 4.53e-02 4.53e-02   ph/cm2/s
              Error 9.62e-03 7.78e-03 3.76e-03 4.05e-04 1.40e-02 1.40e-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 4.59e-02 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    2.403    0.622    -      -           2.32e-04 1.80e-04   81.300 57
CPL  -1.438    0.667      30.4   10.8      7.80e-02 8.81e+00   75.330 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.403    0.616    -      -           2.34e-04 1.81e-04   81.840 57
CPL  -1.468    0.659      30.3   10.7      8.33e-02 9.02e+00   75.790 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
  318.2917 +62.4874 0.0626   23.4  -13.6       0.2767     3.1  TRIG_00356516       
------------------------------------------
 
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: 2.40252     ( -0.548539   0.6951 )
Norm@50keV  : 2.32145E-04    ( -0.000232533   0.000128064 )
------------------------------------------------------------
# Chi-Squared =          81.30 using 59 PHA bins.
# Reduced chi-squared =          1.426 for     57 degrees of freedom 
# Null hypothesis probability =   1.897067e-02
 
Photon flux (15-150 keV)    in 64 sec: 4.30396E-02 ( -0.0150656  0.0151708 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.45448e-07 ( -5.99044e-08  6.84506e-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: -1.43755     ( 1.48094   2.81563 )
Epeak [keV] : 30.3521      ( -11.5085 10.1661 )
Norm@50keV  : 7.80469E-02    ( -0.0933034   17.5282 )
------------------------------------------------------------
# Chi-Squared =          75.33 using 59 PHA bins.
# Reduced chi-squared =          1.345 for     56 degrees of freedom 
# Null hypothesis probability =   4.344585e-02
 
Photon flux (15-150 keV)    in 64 sec: 4.50638E-02 ( -0.0140374  0.014214 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.33004e-07 ( -4.64621e-08  5.28384e-08 ) 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       : 1.37083   ( -2.74779   -1.37083 )
beta        : -9.37167    ( 10   19.9993 )
Epeak [keV] : 30.5834      ( -11.7931 10.0016 )
Norm@50keV   : 6.98668E-02    ( -0.069016   47.5261 )
------------------------------------------------------------
# Chi-Squared =          75.35 using 59 PHA bins.
# Reduced chi-squared =          1.370 for     55 degrees of freedom 
# Null hypothesis probability =   3.559696e-02
 
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: 2.40261     ( -0.541663   0.691051 )
Norm@50keV  : 2.33583E-04    ( -0.000233738   0.000127519 )
------------------------------------------------------------
# Chi-Squared =          81.84 using 59 PHA bins.
# Reduced chi-squared =          1.436 for     57 degrees of freedom 
# Null hypothesis probability =   1.719064e-02
 
Photon flux (15-150 keV)    in 64 sec: 4.32946E-02 ( -0.0149422  0.0150627 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.46131e-07 ( -5.9572e-08  6.81466e-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: -1.46835     ( 1.50679   2.82543 )
Epeak [keV] : 30.2563      ( -11.3199 9.9976 )
Norm@50keV  : 8.32847E-02    ( -0.0976733   17.9479 )
------------------------------------------------------------
# Chi-Squared =          75.79 using 59 PHA bins.
# Reduced chi-squared =          1.353 for     56 degrees of freedom 
# Null hypothesis probability =   4.023629e-02
 
Photon flux (15-150 keV)    in 64 sec: 4.53265E-02 ( -0.0139393  0.0140944 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.33004e-07 ( -4.64621e-08  5.28384e-08 ) 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       : 1.51533   ( -2.50865   -1.34318 )
beta        : -9.99980    ( 15771.9   15781.9 )
Epeak [keV] : 29.8319      ( -10.9799 10.3633 )
Norm@50keV   : 9.40510E-02    ( -0.115352   11.0278 )
------------------------------------------------------------
# Chi-Squared =          75.80 using 59 PHA bins.
# Reduced chi-squared =          1.378 for     55 degrees of freedom 
# Null hypothesis probability =   3.299314e-02
 
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: 2.40252     ( -0.548539   0.6951 )
Norm@50keV  : 2.32145E-04    ( -0.000232533   0.000128064 )
------------------------------------------------------------
# Chi-Squared =          81.30 using 59 PHA bins.
# Reduced chi-squared =          1.426 for     57 degrees of freedom 
# Null hypothesis probability =   1.897067e-02
 
Photon flux (15-150 keV)    in 64 sec: 4.30396E-02 ( -0.0150656  0.0151708 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.45448e-07 ( -5.99044e-08  6.84506e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.43755     ( 1.48094   2.81563 )
Epeak [keV] : 30.3521      ( -11.5085 10.1661 )
Norm@50keV  : 7.80469E-02    ( -0.0933034   17.5282 )
------------------------------------------------------------
# Chi-Squared =          75.33 using 59 PHA bins.
# Reduced chi-squared =          1.345 for     56 degrees of freedom 
# Null hypothesis probability =   4.344585e-02
 
Photon flux (15-150 keV)    in 64 sec: 4.50638E-02 ( -0.0140374  0.014214 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.33004e-07 ( -4.64621e-08  5.28384e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.37083   ( -2.74779   -1.37083 )
beta        : -9.37167    ( 10   19.9993 )
Epeak [keV] : 30.5834      ( -11.7931 10.0016 )
Norm@50keV   : 6.98668E-02    ( -0.069016   47.5261 )
------------------------------------------------------------
# Chi-Squared =          75.35 using 59 PHA bins.
# Reduced chi-squared =          1.370 for     55 degrees of freedom 
# Null hypothesis probability =   3.559696e-02
 
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)  = 4.79267e-08
S(50-100 keV) = 3.6561e-08

T90 vs. Hardness ratio plot

T90                                   = 64 sec.
Hardness ratio (energy fluence ratio) = 0.762852

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.71506
Count Ratio (50-100 keV) / (15-25 keV) = -0.0678019

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]                   [']
254.6547  35.2525    8.8  28.5  118.7   0.1764   1.3   11.1	Her X-1                       
299.5992  35.1867    0.7  34.6   46.2   2.6053  16.5    1.0	Cyg X-1                       
308.0305  40.8338    7.0  33.1   30.8   0.1976   1.7    8.0	Cyg X-3                       
326.0968  38.2265   18.3  43.2   14.7   0.1008   0.6    6.7	Cyg X-2                       
254.9526  37.5865    2.1  26.2  119.1   0.5795   5.4 ------	UNKNOWN                       
288.0414  58.2206    2.4  11.8   22.4   0.3940   4.8 ------	UNKNOWN                       
207.1909  47.1407    2.3  35.6 -168.9   0.4965   5.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
338.700590 688.520000
690.000000 963.045800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4652  35.4650    5.1  47.2  145.3   3.9576   2.3    7.4	Her X-1                       
299.5902  35.1935    0.3  29.8   91.3  25.3944  34.2    0.5	Cyg X-1                       
308.1370  41.0858    5.4  22.4   80.0   1.1304   2.1    8.1	Cyg X-3                       
326.1275  38.4115    4.8  24.6   44.7   1.1534   2.4    5.8	Cyg X-2                       
308.0301  37.5212    2.0  25.9   78.4   3.3054   5.8 ------	UNKNOWN                       
232.7057  50.7229    2.8  44.9  175.7   3.3657   4.1 ------	UNKNOWN                       
225.8164  46.1035    2.9  51.3  176.6   4.8831   4.0 ------	UNKNOWN                       
306.7385  65.9367    2.4   6.1 -172.4   1.8721   4.9 ------	UNKNOWN

Plot creation:
Tue Feb 16 10:12:48 EST 2010