batgrbproduct analysis for trigger=416140

batgrbproduct Analysis for Trigger=416140

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): Tue Mar 16 19:19:52 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger416140/GCN5_download_cron
======================================================================

  Trigger: 00416140      Segment: 000

  BAT Trigger Time: 290439467.072   [s; MET]
      Trigger Stop: 290439468.096   [s; MET]
               UTC: 2010-03-16T13:37:41.452780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 330.258258781808   Dec: -52.2027570953534  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.7
     Image Trigger?:     NO
     Rate S/N Ratio:     46.9361268108053  [ if not an image trigger ]
     Image S/N Ratio:    6.7

  Flight Position:   [ source = BAT ]
    RA: 330.258258781808   Dec: -52.2027570953534  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 330.19409395531   Dec: -52.2166334400151  [deg; J2000]  
        { 22h 00m 46.6s , -52d 12' 59.9" }
         +/- 4.11294719365379 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.2190514009397 [arcmin] (formal 1-sigma fit error)
    SNR: 4.03419382730101
 
  Angular difference between Flight and Ground position is 2.501717 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     T50: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 1.02399998903275 second)
        Measured from: -2.98023223876953e-08     
                   to: 1.02399995923042     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.001785  -0.004874   0.022758   0.047202
           0.007392   0.008829   0.009274   0.011396 [error]
 Peak      0.001785  -0.004874   0.022758   0.047202
           0.007392   0.008829   0.009274   0.011396 [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 1.06e-10 1.24e-09 1.32e-08 1.03e-06 5.80e-08 1.05e-06   erg/cm2
              Error 2.52e-10 1.73e-09 1.10e-08 7.66e-07 4.23e-08 7.75e-07   erg/cm2
Peak flux Power-law 3.16e-03 1.92e-02 1.02e-01 2.46e+00 3.34e-01 2.59e+00   ph/cm2/s
              Error 7.97e-03 2.77e-02 6.53e-02 1.80e+00 1.71e-01 1.27e+00   ph/cm2/s
 
Fluence   Cutoff-PL 8.31e-11 1.07e-09 1.26e-08 1.17e-06 5.84e-08 1.18e-06   erg/cm2
              Error 2.37e-10 1.63e-09 1.08e-08 8.73e-07 4.25e-08 8.81e-07   erg/cm2
Peak flux Cutoff-PL 2.47e-03 1.66e-02 9.77e-02 2.76e+00 3.31e-01 2.87e+00   ph/cm2/s
              Error 7.17e-03 2.60e-02 6.47e-02 1.46e+00 1.71e-01 1.45e+00   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   -1.353    0.741    -      -           1.22e-03 1.31e-03   58.960 57
CPL  -2.712   -0.500     999.9    0.0      7.02e-04 2.90e-03   57.620 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -1.351    0.740    -      -           1.22e-03 1.32e-03   59.430 57
CPL  -3.078    0.000    3011.9  -96.6      3.04e-04 2.00e-03   57.960 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    1.024    0.000    1.024
T90     1.024    0.000    1.024
T50     1.024    0.000    1.024
Peak    1.024   -0.000    1.024

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
  330.1941 -52.2166 0.0476   17.4  164.3       0.0815     4.0  TRIG_00416140       
------------------------------------------
 
Foreground time interval of the image:
  0.000   1.024 (delta_t =   1.024 [sec])
Background time interval of the image:
-60.072 -11.072 (delta_t =  49.000 [sec])

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 1.024000

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 1.024000

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 1.024000

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

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    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.35319     ( -0.588377   0.894032 )
Norm@50keV  : 1.21564E-03    ( -0.00119307   0.00142842 )
------------------------------------------------------------
# Chi-Squared =          58.96 using 59 PHA bins.
# Reduced chi-squared =          1.034 for     57 degrees of freedom 
# Null hypothesis probability =   4.037881e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.332473 ( -0.173655  0.167643 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.80343e-08 ( -5.80344e-08  2.65184e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.71185     ( 2.71186   1.71202 )
Epeak [keV] : 999.850      ( -999.896 -999.896 )
Norm@50keV  : 7.02161E-04    ( -0.000701922   0.00510469 )
------------------------------------------------------------
# Chi-Squared =          57.62 using 59 PHA bins.
# Reduced chi-squared =          1.029 for     56 degrees of freedom 
# Null hypothesis probability =   4.150799e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.302566 ( -0.118699  0.173723 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.84263e-08 ( -5.84263e-08  2.66159e-08 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.109107   ( 0.0304935   0.0304935 )
beta        : 1.38665    ( -0.932231   0.545639 )
Epeak [keV] : 25.8831      ( -25.125 -25.125 )
Norm@50keV   : 1.70087E-03    ( 105.28   -0.00166352 )
------------------------------------------------------------
# Chi-Squared =          58.95 using 59 PHA bins.
# Reduced chi-squared =          1.072 for     55 degrees of freedom 
# Null hypothesis probability =   3.332612e-01
 
Photon flux (15-150 keV)    in 1.024 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    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.35054     ( -0.589718   0.89085 )
Norm@50keV  : 1.22474E-03    ( -0.00120154   0.00143045 )
------------------------------------------------------------
# Chi-Squared =          59.43 using 59 PHA bins.
# Reduced chi-squared =          1.043 for     57 degrees of freedom 
# Null hypothesis probability =   3.870541e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.334135 ( -0.173911  0.167676 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.83236e-08 ( -5.83236e-08  2.6498e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -3.07754     (     )
Epeak [keV] : 3011.87      ( -807.065 -1000.36 )
Norm@50keV  : 3.03515E-04    ( -0.000305824   0.00369993 )
------------------------------------------------------------
# Chi-Squared =          57.96 using 59 PHA bins.
# Reduced chi-squared =          1.035 for     56 degrees of freedom 
# Null hypothesis probability =   4.027527e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.330853 ( -0.171398  0.171172 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.87056e-08 ( -5.87056e-08  2.66109e-08 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.991278   ( 0.994936   0.994936 )
beta        : 1.41505    ( -0.93911   0.535417 )
Epeak [keV] : 10.2723      ( -10.2934 -10.2934 )
Norm@50keV   : 1.84378E-03    ( 0.822497   -0.001848 )
------------------------------------------------------------
# Chi-Squared =          59.42 using 59 PHA bins.
# Reduced chi-squared =          1.080 for     55 degrees of freedom 
# Null hypothesis probability =   3.179612e-01
 
Photon flux (15-150 keV)    in 1.024 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: -1.35319     ( -0.588377   0.894032 )
Norm@50keV  : 1.21564E-03    ( -0.00119307   0.00142842 )
------------------------------------------------------------
# Chi-Squared =          58.96 using 59 PHA bins.
# Reduced chi-squared =          1.034 for     57 degrees of freedom 
# Null hypothesis probability =   4.037881e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.332473 ( -0.173655  0.167643 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.80343e-08 ( -5.80344e-08  2.65184e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.71185     ( 2.71186   1.71126 )
Epeak [keV] : 999.850      ( -999.896 -999.896 )
Norm@50keV  : 7.02161E-04    ( -0.000701922   0.00510469 )
------------------------------------------------------------
# Chi-Squared =          57.62 using 59 PHA bins.
# Reduced chi-squared =          1.029 for     56 degrees of freedom 
# Null hypothesis probability =   4.150799e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.302566 ( -0.118699  0.173723 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.84263e-08 ( -5.84263e-08  2.66159e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.109107   ( 0.0304935   0.0304935 )
beta        : 1.38665    ( -0.932231   0.545639 )
Epeak [keV] : 25.8831      ( -25.125 -25.125 )
Norm@50keV   : 1.70087E-03    ( 105.28   -0.00166352 )
------------------------------------------------------------
# Chi-Squared =          58.95 using 59 PHA bins.
# Reduced chi-squared =          1.072 for     55 degrees of freedom 
# Null hypothesis probability =   3.332612e-01
 
Photon flux (15-150 keV)    in 1.024 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)  = 1.23825e-09
S(50-100 keV) = 1.31868e-08

T90 vs. Hardness ratio plot

T90                                   = 1.02399998903275 sec.
Hardness ratio (energy fluence ratio) = 10.6495

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = -2.73053
Count Ratio (50-100 keV) / (15-25 keV) = 12.7496

Mask shadow pattern

IMX = -3.019345215000961E-01, IMY = -8.508680189354928E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:
-60.072000 -11.072000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
343.8737 -71.3888    2.5  22.4  104.1   1.3136   4.6 ------	UNKNOWN                       
 48.7260 -14.6266    3.7  54.1  -19.8   2.6213   3.1 ------	UNKNOWN                       
 39.7356 -10.9567    2.8  52.0  -31.4   3.4970   4.1 ------	UNKNOWN

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

Time interval of the image:
0.000000 1.024000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 79.0707 -86.7794    3.2  39.7   87.4   0.2928   3.6 ------	UNKNOWN                       
270.7913 -62.5919    2.3  46.0  132.1   0.4492   5.1 ------	UNKNOWN                       
 42.2434  -7.6061    2.2  56.1  -31.1   0.6378   5.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:

Plot creation:
Tue Mar 16 19:28:01 EDT 2010