batgrbproduct analysis for trigger=343319

batgrbproduct Analysis for Trigger=343319

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 v2.42
    Process Start Time (local time): Thu Feb 19 22:37:34 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger343319/GCN5_download_cron
======================================================================

  Trigger: 00343319      Segment: 000

  BAT Trigger Time: 256755024   [s; MET]
      Trigger Stop: 256755088   [s; MET]
               UTC: 2009-02-19T16:50:19.487860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 299.164379669533   Dec: 34.2115539996892  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.82
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    12.82

  Flight Position:   [ source = BAT ]
    RA: 299.164379669533   Dec: 34.2115539996892  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 299.166932632994   Dec: 34.2190069505784  [deg; J2000]  
        { 19h 56m 40.1s , +34d 13' 08.4" }
         +/- 1.63334449460591 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.65610658121888 [arcmin] (formal 1-sigma fit error)
    SNR: 15.0911220959352
 
  Angular difference between Flight and Ground position is 0.464771 arcmin
 
  Partial Coding Fraction: 0.4921875    [ including projection effects ]

  Duration
     T90: 645.116000026464 +/- 47.8251930600874
        Measured from: -61.1679999232292
                   to: 583.948000103235     [s; relative to TRIGTIME]
     T50: 302.636000037193 +/- 27.5902827207847
        Measured from: 59.228000074625
                   to: 361.864000111818     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -61.3759999871254     
                   to: -60.3759999871254     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -91.555999994278     
                   to: 660.59999999404     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.573867   6.258364   4.170796   0.625832
           0.166598   0.164976   0.145657   0.128564 [error]
 Peak      0.025171   0.036390   0.013167   0.000700
           0.007543   0.007820   0.006692   0.005832 [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 2.05e-06 2.98e-06 3.21e-06 6.47e-06 1.02e-05 1.47e-05   erg/cm2
              Error 1.24e-07 1.05e-07 1.53e-07 6.73e-07 3.59e-07 7.81e-07   erg/cm2
Peak flux Power-law 3.10e-01 2.42e-01 1.26e-01 9.53e-02 7.22e-01 7.73e-01   ph/cm2/s
              Error 1.26e-01 6.75e-02 5.60e-02 8.34e-02 2.03e-01 2.18e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.91e-06 3.05e-06 3.27e-06 3.99e-06 9.96e-06 1.22e-05   erg/cm2
              Error 1.61e-07 1.20e-07 1.64e-07 1.41e-06 4.14e-07 1.32e-06   erg/cm2
Peak flux Cutoff-PL 3.08e-01 2.44e-01 1.26e-01 8.18e-02 7.20e-01 7.49e-01   ph/cm2/s
              Error 1.32e-01 7.90e-02 7.47e-02 9.97e-02 2.03e-01 2.41e-01   ph/cm2/s
 
Fluence        Band 1.89e-06 3.04e-06 3.26e-06 4.46e-06 9.94e-06 1.27e-05   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 2.94e-01 2.69e-01 1.15e-01 6.64e-02 7.13e-01 7.43e-01   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    1.889    0.065    -      -           1.50e-03 5.27e-05   52.740 57
CPL   1.495    0.278      65.0   28.8      2.34e-03 7.05e-04   47.450 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.937    0.531    -      -           4.95e-03 1.70e-03   61.380 57
CPL   1.725    2.408      51.7    0.0      6.58e-03 0.00e+00   61.380 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: 453.312000 sec.
T50 in the 50-300 keV band: 228.096000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  752.156  -91.556  660.600
T90   645.116  -61.168  583.948
T50   302.636   59.228  361.864
Peak    1.000  -61.376  -60.376

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
  299.1669 +34.2190 0.0128   41.7  -22.5       2.1920    15.1  TRIG_00343319       
------------------------------------------
 
Foreground time interval of the image:
 -5.799  71.201 (delta_t =  77.000 [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

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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

Multiple GTIs in the spectrum
tstart tstop
-91.556000 -83.450000
-73.000000 660.600000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.88915     ( -0.0650942   0.0657759 )
Norm@50keV  : 1.50178E-03    ( -5.28752e-05   5.25756e-05 )
------------------------------------------------------------
# Chi-Squared =          52.74 using 59 PHA bins.
# Reduced chi-squared =         0.9252 for     57 degrees of freedom 
# Null hypothesis probability =   6.355779e-01
 
Photon flux (15-150 keV)    in 741.7 sec: 0.214535 ( -0.00793792  0.00797351 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.02399e-05 ( -3.58233e-07  3.58985e-07 ) ergs/cm2

Cutoff power-law model

Multiple GTIs in the spectrum
tstart tstop
-91.556000 -83.450000
-73.000000 660.600000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49504     ( -0.2535   0.302208 )
Epeak [keV] : 64.9949      ( -10.0611 47.5115 )
Norm@50keV  : 2.33697E-03    ( -0.000645231   0.000764175 )
------------------------------------------------------------
# Chi-Squared =          47.45 using 59 PHA bins.
# Reduced chi-squared =         0.8473 for     56 degrees of freedom 
# Null hypothesis probability =   7.850286e-01
 
Photon flux (15-150 keV)    in 741.7 sec: 0.208378 ( -0.009016  0.00905 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.95977e-06 ( -4.14981e-07  4.12904e-07 ) ergs/cm2

Band function

Multiple GTIs in the spectrum
tstart tstop
-91.556000 -83.450000
-73.000000 660.600000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.53227   ( -0.259553   0.310521 )
beta        : -2.47250    ( 2.45426   0.491127 )
Epeak [keV] : 66.4494      ( -14.4082 38.9251 )
Norm@50keV   : 2.24394E-03    ( -0.00052533   0.000992008 )
------------------------------------------------------------
# Chi-Squared =          47.40 using 59 PHA bins.
# Reduced chi-squared =         0.8618 for     55 degrees of freedom 
# Null hypothesis probability =   7.569570e-01
 
Photon flux (15-150 keV)    in 741.7 sec: 0.208350 ( -0.008136  0.008395 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.94471e-06 ( -4.00444e-07  4.16168e-07 ) ergs/cm2

Peak spectrum fit

Power-law model

Time interval is from  -61.376 sec. to  -60.376 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93668     ( -0.500439   0.561795 )
Norm@50keV  : 4.94932E-03    ( -0.00174666   0.0016481 )
------------------------------------------------------------
# Chi-Squared =          61.38 using 59 PHA bins.
# Reduced chi-squared =          1.077 for     57 degrees of freedom 
# Null hypothesis probability =   3.218730e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.721599 ( -0.202706  0.202835 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.55302e-08 ( -1.47876e-08  1.54822e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  -61.376 sec. to  -60.376 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72543     ( -4.38998   0.426764 )
Epeak [keV] : 51.6679      (   )
Norm@50keV  : 6.58190E-03    (     )
------------------------------------------------------------
# Chi-Squared =          61.38 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     56 degrees of freedom 
# Null hypothesis probability =   2.891333e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.719641 ( -0.201347  0.204363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.50359e-08 ( -1.8984e-08  1.56969e-08 ) ergs/cm2

Band function

Time interval is from  -61.376 sec. to  -60.376 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99744   ( -748.999   -748.999 )
beta        : -2.23085    ( -1.66873   0.665536 )
Epeak [keV] : 24.7080      ( -24.3827 10.4326 )
Norm@50keV   : 878.115    ( -878.115   5.66804e+06 )
------------------------------------------------------------
# Chi-Squared =          60.21 using 59 PHA bins.
# Reduced chi-squared =          1.095 for     55 degrees of freedom 
# Null hypothesis probability =   2.927254e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.713385 ( -0.205505  0.204145 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.27529e-08 ( -1.35798e-08  1.48601e-08 ) 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: 1.87714     ( -0.179243   0.186756 )
Norm@50keV  : 1.74159E-03    ( -0.000207297   0.000203732 )
------------------------------------------------------------
# Chi-Squared =          52.75 using 59 PHA bins.
# Reduced chi-squared =         0.9255 for     57 degrees of freedom 
# Null hypothesis probability =   6.350353e-01
 
Photon flux (15-150 keV)    in 77 sec: 0.247550 ( -0.0256832  0.025709 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.23282e-06 ( -1.44453e-07  1.46442e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02397     ( -0.803914   0.802453 )
Epeak [keV] : 50.7419      ( -12.4336 222.734 )
Norm@50keV  : 5.14263E-03    ( -0.00503411   0.00919239 )
------------------------------------------------------------
# Chi-Squared =          49.84 using 59 PHA bins.
# Reduced chi-squared =         0.8899 for     56 degrees of freedom 
# Null hypothesis probability =   7.059871e-01
 
Photon flux (15-150 keV)    in 77 sec: 0.240555 ( -0.026597  0.026611 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.159e-06 ( -1.58797e-07  1.63155e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.23693   ( -0.440354   0.878496 )
beta        : -10.00000    ( 2.98226e+11   2.98226e+11 )
Epeak [keV] : 52.9402      ( -14.216 206.786 )
Norm@50keV   : 3.95160E-03    ( -0.00411493   0.0100538 )
------------------------------------------------------------
# Chi-Squared =          49.83 using 59 PHA bins.
# Reduced chi-squared =         0.9060 for     55 degrees of freedom 
# Null hypothesis probability =   6.719183e-01
 
Photon flux (15-150 keV)    in 77 sec: 0.240535 ( -0.026584  0.026631 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.16955e-06 ( -1.65088e-07  1.64657e-07 ) ergs/cm2

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

S(25-50 keV)  = 2.97635e-06
S(50-100 keV) = 3.21406e-06

T90 vs. Hardness ratio plot

T90                                   = 645.116000026464 sec.
Hardness ratio (energy fluence ratio) = 1.07987

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.1228
Count Ratio (50-100 keV) / (15-25 keV) = 0.748277

Mask shadow pattern

IMX = 0, IMY = 0

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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:
-5.799400 71.200600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5175  35.3060    5.4  40.6  -21.9  -0.3039  -2.1    7.2	Cyg X-1                       
307.9745  41.0549    8.0  32.0  -24.2  -0.1485  -1.4    8.7	Cyg X-3                       
326.3897  38.1950    0.0  25.9  -51.6   0.0631   0.6   12.8	Cyg X-2                       
 74.6796  69.3493    2.7  34.9  118.1   0.8851   4.3 ------	UNKNOWN                       
 73.7852  66.1129    2.7  36.1  123.3   0.9401   4.3 ------	UNKNOWN                       
350.6807  69.0770    3.1  10.3   80.1   0.3438   3.8 ------	UNKNOWN                       
307.3880  40.1455    2.2  32.9  -24.7   0.5621   5.3 ------	UNKNOWN                       
299.1669  34.2190    0.8  41.7  -22.5   2.1920  14.9 ------	UNKNOWN                       
285.8875  24.2861    2.7  56.5  -17.8   1.5781   4.3 ------	UNKNOWN                       
300.6266  26.8603    2.7  46.9  -30.1   0.8096   4.2 ------	UNKNOWN                       
 37.7336  11.0624    3.1  59.3 -156.3   2.8157   3.7 ------	UNKNOWN                       
 27.5466  10.9593    3.6  55.2 -145.4   1.9488   3.2 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
133.400600 903.050000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.6269  35.3093   12.6  36.3   56.7  -0.9971  -0.9    8.5	Her X-1                       
268.4859  -1.4643    6.5  45.8   -2.8   1.7739   1.8    7.1	SW J1753.5-0127               
274.0082 -14.0376   84.3  53.8  -17.4   0.1970   0.1    0.2	GX 17+2                       
288.8838  10.8346    5.8  25.2  -23.8   0.9574   2.0    8.3	GRS 1915+105                  
299.4591  35.1808    5.6   1.0  146.5  -1.0541  -2.1    6.6	Cyg X-1                       
308.1144  40.7712   25.3   9.7  176.6  -0.2114  -0.5   10.9	Cyg X-3                       
326.1080  38.4544   15.5  22.0 -157.0   0.3687   0.7    8.5	Cyg X-2                       
 13.2302  53.3655    3.6  54.1  177.1   6.5251   3.2 ------	UNKNOWN                       
307.3580  40.2853    0.9   8.9  176.6   6.3658  13.6 ------	UNKNOWN                       
299.1517  34.3544    0.3   0.1  132.4  21.0189  41.1 ------	UNKNOWN                       
307.4305  36.9369    2.0   7.3 -162.5   2.7012   5.9 ------	UNKNOWN                       
275.7522   6.6601    2.0  35.0   -4.6   3.7206   5.8 ------	UNKNOWN                       
264.6789 -10.5341    2.8  55.4   -5.5   7.0470   4.2 ------	UNKNOWN                       
288.9149   9.9196    0.9  26.0  -24.6   5.9426  12.1 ------	UNKNOWN

Plot creation:
Tue Feb 16 22:39:21 EST 2010