batgrbproduct analysis for trigger=341114

batgrbproduct Analysis for Trigger=341114

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): Mon Jan 26 08:30:53 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger341114/GCN5_download_cron
======================================================================

  Trigger: 00341114      Segment: 000

  BAT Trigger Time: 254613137.608   [s; MET]
      Trigger Stop: 254613137.616   [s; MET]
               UTC: 2009-01-25T21:52:13.162160    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 237.728806211538   Dec: -54.3028783954379  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18.87
     Image Trigger?:     NO
     Rate S/N Ratio:     160.866404199261  [ if not an image trigger ]
     Image S/N Ratio:    18.87

  Flight Position:   [ source = BAT ]
    RA: 237.728806211538   Dec: -54.3028783954379  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 237.712160736086   Dec: -54.3111094789258  [deg; J2000]  
        { 15h 50m 50.9s , -54d 18' 40.0" }
         +/- 1.21661182209036 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.4474693150046 [arcmin] (formal 1-sigma fit error)
    SNR: 22.9864878466769
 
  Angular difference between Flight and Ground position is 0.763834 arcmin
 
  Partial Coding Fraction: 0.2734375    [ including projection effects ]

  Duration
     T90: 1.08400002121925 +/- 0.19015781709751
        Measured from: -0.979999929666519
                   to: 0.104000091552734     [s; relative to TRIGTIME]
     T50: 0.0520000159740448 +/- 0.0329848540256443
        Measured from: -0.0359999239444733
                   to: 0.0160000920295715     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.828000009059906     
                   to: 0.171999990940094     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.21200001239777     
                   to: 0.171999990940094     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.330009   0.351659   0.165216   0.026620
           0.020350   0.019555   0.016145   0.013338 [error]
 Peak      0.319946   0.326578   0.137079   0.018812
           0.018519   0.017907   0.014222   0.011611 [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 1.39e-07 1.59e-07 1.31e-07 1.80e-07 4.93e-07 6.08e-07   erg/cm2
              Error 1.37e-08 1.08e-08 1.55e-08 4.18e-08 3.66e-08 6.00e-08   erg/cm2
Peak flux Power-law 4.30e+00 2.63e+00 1.04e+00 5.47e-01 8.25e+00 8.51e+00   ph/cm2/s
              Error 3.42e-01 1.63e-01 1.15e-01 1.10e-01 4.99e-01 5.13e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.25e-07 1.74e-07 1.29e-07 5.60e-08 4.66e-07 4.84e-07   erg/cm2
              Error 1.63e-08 1.45e-08 1.78e-08 4.37e-08 3.98e-08 5.96e-08   erg/cm2
Peak flux Cutoff-PL 3.99e+00 2.94e+00 1.03e+00 1.92e-01 8.11e+00 8.15e+00   ph/cm2/s
              Error 3.86e-01 2.29e-01 1.34e-01 1.16e-01 5.05e-01 5.18e-01   ph/cm2/s
 
Fluence        Band 1.23e-07 1.73e-07 1.29e-07 5.61e-08 4.65e-07 5.46e-07   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 3.86e+00 2.93e+00 1.03e+00 1.81e-01 7.97e+00 8.17e+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    2.282    0.132    -      -           3.74e-02 3.23e-03   56.140 57
CPL   1.410    0.608      29.6    0.0      1.14e-01 0.00e+00   48.880 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.347    0.115    -      -           4.60e-02 3.91e-03   58.690 57
CPL   1.460    0.511      24.9   13.5      1.53e-01 1.19e-01   48.080 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: 1.344000 sec.
T50 in the 50-300 keV band: 0.704000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    1.384   -1.212    0.172
T90     1.084   -0.980    0.104
T50     0.052   -0.036    0.016
Peak    1.000   -0.828    0.172

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
  237.7122 -54.3111 0.0083   45.8  -34.9       0.9121    23.0  TRIG_00341114       
------------------------------------------
 
Foreground time interval of the image:
 -1.212   0.172 (delta_t =   1.384 [sec])
Background time interval of the image:
-145.907  -1.212 (delta_t = 144.695 [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 0.008000

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 0.008000

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 0.008000

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   -1.212 sec. to    0.172 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.28234     ( -0.128602   0.134682 )
Norm@50keV  : 3.74042E-02    ( -0.00325171   0.00319975 )
------------------------------------------------------------
# Chi-Squared =          56.14 using 59 PHA bins.
# Reduced chi-squared =         0.9850 for     57 degrees of freedom 
# Null hypothesis probability =   5.071858e-01
 
Photon flux (15-150 keV)    in 1.384 sec: 6.47309 ( -0.456092  0.457227 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.93122e-07 ( -3.64601e-08  3.67035e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.212 sec. to    0.172 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41049     ( -0.647263   0.568622 )
Epeak [keV] : 29.5690      (   )
Norm@50keV  : 0.113803    (     )
------------------------------------------------------------
# Chi-Squared =          48.88 using 59 PHA bins.
# Reduced chi-squared =         0.8728 for     56 degrees of freedom 
# Null hypothesis probability =   7.389572e-01
 
Photon flux (15-150 keV)    in 1.384 sec: 6.20525 ( -0.48424  0.48557 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.65686e-07 ( -3.93803e-08  4.01775e-08 ) ergs/cm2

Band function

Time interval is from   -1.212 sec. to    0.172 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.41327   ( -0.592295   0.327085 )
beta        : -9.37142    ( 9.99976   19.9998 )
Epeak [keV] : 29.5610      ( -4.92004 8.53557 )
Norm@50keV   : 0.113266    ( -0.0545567   0.184099 )
------------------------------------------------------------
# Chi-Squared =          48.88 using 59 PHA bins.
# Reduced chi-squared =         0.8887 for     55 degrees of freedom 
# Null hypothesis probability =   7.063176e-01
 
Photon flux (15-150 keV)    in 1.384 sec: 6.20664 ( -0.48565  0.4842 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.65041e-07 ( -3.92724e-08  4.00765e-08 ) ergs/cm2

Peak spectrum fit

Power-law model

Time interval is from   -0.828 sec. to    0.172 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.34692     ( -0.111567   0.117442 )
Norm@50keV  : 4.59719E-02    ( -0.00393473   0.00387636 )
------------------------------------------------------------
# Chi-Squared =          58.69 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     57 degrees of freedom 
# Null hypothesis probability =   4.132859e-01
 
Photon flux (15-150 keV)    in 1 sec: 8.24910 ( -0.4991  0.499163 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.43337e-07 ( -3.11137e-08  3.13546e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.828 sec. to    0.172 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45954     ( -0.538599   0.484046 )
Epeak [keV] : 24.9427      ( -19.538 7.54033 )
Norm@50keV  : 0.153216    ( -0.0727781   0.164428 )
------------------------------------------------------------
# Chi-Squared =          48.08 using 59 PHA bins.
# Reduced chi-squared =         0.8586 for     56 degrees of freedom 
# Null hypothesis probability =   7.651323e-01
 
Photon flux (15-150 keV)    in 1 sec: 8.10518 ( -0.505  0.50488 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.18208e-07 ( 3.4379e-08  -4.18208e-07 ) ergs/cm2

Band function

Time interval is from   -0.828 sec. to    0.172 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45787   ( -0.436543   0.454478 )
beta        : -10.00000    ( 4.20081e+08   4.20081e+08 )
Epeak [keV] : 24.9728      ( -19.5702 7.50386 )
Norm@50keV   : 0.153507    ( -0.0673353   0.163982 )
------------------------------------------------------------
# Chi-Squared =          48.08 using 59 PHA bins.
# Reduced chi-squared =         0.8742 for     55 degrees of freedom 
# Null hypothesis probability =   7.340666e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.96525 ( -0.6194  0.30947 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.17422e-07 ( -3.4231e-08  3.4396e-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: 2.28234     ( -0.128602   0.134682 )
Norm@50keV  : 3.74042E-02    ( -0.00325171   0.00319975 )
------------------------------------------------------------
# Chi-Squared =          56.14 using 59 PHA bins.
# Reduced chi-squared =         0.9850 for     57 degrees of freedom 
# Null hypothesis probability =   5.071858e-01
 
Photon flux (15-150 keV)    in 1.384 sec: 6.47309 ( -0.456092  0.457227 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.93122e-07 ( -3.64601e-08  3.67035e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41049     ( -0.647263   0.568622 )
Epeak [keV] : 29.5690      (   )
Norm@50keV  : 0.113803    (     )
------------------------------------------------------------
# Chi-Squared =          48.88 using 59 PHA bins.
# Reduced chi-squared =         0.8728 for     56 degrees of freedom 
# Null hypothesis probability =   7.389572e-01
 
Photon flux (15-150 keV)    in 1.384 sec: 6.20525 ( -0.48424  0.48557 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.65686e-07 ( -3.93803e-08  4.01775e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.41327   ( -0.592295   0.327085 )
beta        : -9.37142    ( 9.99976   19.9998 )
Epeak [keV] : 29.5610      ( -4.92004 8.53557 )
Norm@50keV   : 0.113266    ( -0.0547072   0.184099 )
------------------------------------------------------------
# Chi-Squared =          48.88 using 59 PHA bins.
# Reduced chi-squared =         0.8887 for     55 degrees of freedom 
# Null hypothesis probability =   7.063176e-01
 
Photon flux (15-150 keV)    in 1.384 sec: 6.20664 ( -0.48565  0.4842 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.65041e-07 ( -3.92724e-08  4.00765e-08 ) ergs/cm2

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

S(25-50 keV)  = 1.58735e-07
S(50-100 keV) = 1.30522e-07

T90 vs. Hardness ratio plot

T90                                   = 1.08400002121925 sec.
Hardness ratio (energy fluence ratio) = 0.822264

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.0656
Count Ratio (50-100 keV) / (15-25 keV) = 0.500641

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 0.008000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000

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:
-145.907400 -1.212000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9695 -15.6440    0.2  17.6  -93.8  10.7981  61.1    0.6	Sco X-1                       
254.6012  35.3482   12.8  51.0 -179.3   0.4587   0.9    7.0	Her X-1                       
256.0274 -37.7343    4.7  38.1  -64.0  -0.9090  -2.4    6.9	4U 1700-377                   
256.5956 -36.4893  124.2  37.6  -66.0  -0.0367  -0.1    8.7	GX 349+2                      
263.0056 -24.7431 1302.9  36.6  -87.5  -0.0039  -0.0    0.2	GX 1+4                        
268.5009  -1.4781 2265.5  40.8 -125.5   0.0016   0.0    8.1	SW J1753.5-0127               
242.5929  41.8855    2.7  52.7  166.3   3.2724   4.2 ------	UNKNOWN                       
249.8159  35.7810    2.4  49.3  176.0   2.0386   4.9 ------	UNKNOWN                       
198.1517 -60.3882    2.8  56.0   -9.8   2.6648   4.2 ------	UNKNOWN

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

Time interval of the image:
-1.212000 0.172000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9892 -15.6055    6.3  17.6  -93.9  -0.0317  -1.8    2.2	Sco X-1                       
254.4373  35.3624    3.6  50.9 -179.5  -0.1121  -3.2    1.6	Her X-1                       
255.7609 -37.9171    9.2  38.0  -63.5   0.0434   1.3   11.6	4U 1700-377                   
256.3798 -36.3735    7.6  37.4  -66.0   0.0531   1.5    4.0	GX 349+2                      
263.2067 -24.6720    0.0  36.8  -87.7  -0.0562  -1.4   11.6	GX 1+4                        
268.2971  -1.5585   20.9  40.6 -125.5  -0.0222  -0.6    7.6	SW J1753.5-0127               
201.3273   1.6335    2.4  28.8   83.4   0.1083   4.9 ------	UNKNOWN                       
237.7122 -54.3111    0.5  45.8  -34.9   0.9121  23.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
488.092600 962.461800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.5353 -60.5836    6.2  35.1   56.5   1.6710   1.9    6.9	Cen X-3                       
186.6622 -62.7766    0.4  27.1   55.8  18.5574  31.6    0.4	GX 301-2                      
244.9769 -15.6497    0.2  39.1 -164.5  30.9093  49.7    0.6	Sco X-1                       
255.7471 -37.7473    0.0  20.6 -131.7   0.0865   0.2   12.8	4U 1700-377                   
256.3432 -36.4596    3.7  22.0 -132.3   1.5019   3.1    5.0	GX 349+2                      
262.8839 -24.7790    4.5  34.9 -133.2   1.6512   2.6    7.1	GX 1+4                        
264.6925 -44.5714   21.0  19.9 -103.8  -0.2527  -0.5    7.6	4U 1735-44                    
270.2491 -25.0574    2.5  37.8 -123.1   3.4695   4.6    2.3	GX 5-1                        
270.0741 -25.6810    0.0  37.2 -122.8  -0.6883  -0.9   12.9	GRS 1758-258                  
276.0349 -30.2472    8.1  36.4 -111.2   1.5476   1.4    9.2	H1820-303                     
193.0395 -33.7924    2.3  37.2  109.3   6.0811   5.1 ------	UNKNOWN                       
236.7972 -29.2156    2.7  25.1 -177.6   1.6507   4.2 ------	UNKNOWN                       
270.2012 -42.9279    2.5  24.0 -100.5   2.2481   4.6 ------	UNKNOWN                       
300.7994 -49.5058    3.9  37.9  -66.1   2.6969   3.0 ------	UNKNOWN                       
276.0999 -20.0871    3.3  44.9 -119.9   7.2732   3.5 ------	UNKNOWN

Plot creation:
Tue Feb 16 23:25:50 EST 2010