batgrbproduct analysis for trigger=613516

batgrbproduct Analysis for Trigger=613516

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 batgrbproduct analysis is using the flight position for the mask-weighting calculation.
4) This page will be updated for up to 10 downlinks after the trigger.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Sep 24 13:15:27 EDT 2014
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger613516/GCN5_download_cron
======================================================================

  Trigger: 00613516      Segment: 000

  BAT Trigger Time: 433215368   [s; MET]
      Trigger Stop: 433215432   [s; MET]
               UTC: 2014-09-24T01:35:55.433640    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 135.339726082301   Dec: -40.3968714646127  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.39
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.39

  Flight Position:   [ source = BAT ]
    RA: 135.339726082301   Dec: -40.3968714646127  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 135.420866916272   Dec: -40.471509257015  [deg; J2000]  
        { 09h 01m 41.0s , -40d 28' 17.4" }
         +/- 2.18063884512693 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.06283758596005 [arcmin] (formal 1-sigma fit error)
    SNR: 9.98682217384748
 
  Angular difference between Flight and Ground position is 5.812620 arcmin
 
  Partial Coding Fraction: 0.78125    [ including projection effects ]

  Duration
     T90: 53 +/- 14.8660687473185
        Measured from: 279.000000119209
                   to: 332.000000119209     [s; relative to TRIGTIME]
     T50: 29 +/- 18.6010752377383
        Measured from: 291.000000119209
                   to: 320.000000119209     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 291     
                   to: 292     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 274     
                   to: 339     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.494846   0.382644   0.049913   0.036158
           0.043988   0.044523   0.038276   0.034792 [error]
 Peak      0.008426   0.007888   0.006421   0.006983
           0.005556   0.005472   0.004743   0.004461 [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 1.34e-07 1.28e-07 8.48e-08 8.73e-08 3.83e-07 4.34e-07   erg/cm2
              Error 2.16e-08 2.29e-08 2.83e-08 5.20e-08 7.27e-08 1.02e-07   erg/cm2
Peak flux Power-law 6.93e-02 3.69e-02 1.22e-02 5.22e-03 1.21e-01 1.24e-01   ph/cm2/s
              Error 1.13e-02 6.37e-03 3.96e-03 2.93e-03 1.80e-02 1.87e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.39e-07 1.63e-07 7.67e-09 8.73e-13 3.10e-07 3.10e-07   erg/cm2
              Error 2.55e-08 3.72e-08 1.60e-08 1.36e-10 5.17e-08 5.17e-08   erg/cm2
Peak flux Cutoff-PL 6.86e-02 4.96e-02 1.34e-03 8.04e-08 1.20e-01 1.20e-01   ph/cm2/s
              Error 1.31e-02 1.01e-02 2.62e-03 1.22e-05 1.71e-02 1.71e-02   ph/cm2/s
 
Fluence        Band -------- -------- 2.05e-08 1.78e-10 3.27e-07 3.28e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.000    0.000    -      -           0.00e+00 0.00e+00    0.000  0
CPL   0.000    0.000       0.0    0.0      0.00e+00 0.00e+00    0.000  0
 
The chi2 of BB fit is 57.76 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.000    0.000    -      -           0.00e+00 0.00e+00    0.000  0
CPL   0.000    0.000       0.0    0.0      0.00e+00 0.00e+00    0.000  0
 
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   65.000  274.000  339.000
T90    53.000  279.000  332.000
T50    29.000  291.000  320.000
Peak    1.000  291.000  292.000

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
  135.4209 -40.4715 0.0193   22.3  -54.7       0.9200    10.0  TRIG_00613516       
------------------------------------------
 
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) The mask-weighted light curves are using the flight position.
3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
4) 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.
5) 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.
6) 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

Time interval is from  274.000 sec. to  339.000 sec.
Usage: bat_spec_fit_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel

Cutoff power-law model

Time interval is from  274.000 sec. to  339.000 sec.
Usage: bat_spec_fit_cutoff_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel

Band function

Time interval is from  274.000 sec. to  339.000 sec.
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel

Single BB

Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Thermal bremsstrahlung (OTTB)

Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Double BB

Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Peak spectrum fit

Power-law model

Time interval is from  291.000 sec. to  292.000 sec.
Usage: bat_spec_fit_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel

Cutoff power-law model

Time interval is from  291.000 sec. to  292.000 sec.
Usage: bat_spec_fit_cutoff_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel

Band function

Time interval is from  291.000 sec. to  292.000 sec.
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel

Single BB

Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Thermal bremsstrahlung (OTTB)

Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Double BB

Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

Cutoff power-law model

Band function

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

S(25-50 keV)  = 1.28e-07
S(50-100 keV) = 8.48e-08

T90 vs. Hardness ratio plot

T90                                   = 53 sec.
Hardness ratio (energy fluence ratio) = 0.6625

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.773259
Count Ratio (50-100 keV) / (15-25 keV) = 0.100866

Mask shadow pattern

IMX = 2.365197850826404E-01, IMY = 3.342646281774452E-01

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:
-239.000000 -213.420000
-212.000000 72.000590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4575 -40.4717    1.0  22.3  -54.7   2.9673  11.7    5.9	Vela X-1                      
170.3136 -60.8002   10.0  48.5  -30.1  -0.6026  -1.1   10.6	Cen X-3                       
186.3790 -62.7058    5.9  56.2  -28.1   2.4034   2.0    8.6	GX 301-2                      
 95.3623  20.2718    2.8  53.6  167.0   4.3259   4.1 ------	UNKNOWN                       
108.9125  20.1107    2.8  51.6 -177.2   2.8313   4.2 ------	UNKNOWN                       
132.7600 -26.1555    3.6  20.5  -94.9   0.7705   3.2 ------	UNKNOWN                       
142.8807   4.9356    3.0  47.9 -129.1   4.3654   3.9 ------	UNKNOWN                       
149.0711  -8.9698    3.1  42.5 -109.0   3.9531   3.7 ------	UNKNOWN

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]                   [']
135.4208 -40.4716    1.2  22.3  -54.7   0.9199  10.0    7.0	Vela X-1                      
170.3127 -60.7997    5.7  48.5  -30.1  -0.4329  -2.0   10.6	Cen X-3                       
186.4498 -62.5587    0.0  56.2  -28.3   0.3031   0.6   13.9	GX 301-2                      
126.1647 -45.1234    2.5  18.5  -33.5   0.3857   4.7 ------	UNKNOWN                       
123.9039  25.6814    2.2  58.6 -161.1   2.8162   5.3 ------	UNKNOWN                       
193.2098 -66.0237    2.3  58.8  -23.8   2.7566   5.1 ------	UNKNOWN                       
142.8398   4.9059    2.7  47.9 -129.2   1.6562   4.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
118.500590 963.096500
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.3645 -40.4689    0.8   0.1   12.6   7.5659  13.7    9.1	Vela X-1                      
170.0119 -60.5818    4.9  29.3   -2.5   1.4935   2.4    9.3	Cen X-3                       
186.3997 -62.6934    1.8  37.3   -3.7   5.4414   6.5    8.4	GX 301-2                      
133.4972 -53.7961    2.7  13.4   37.0   2.4569   4.2 ------	UNKNOWN                       
231.2988 -67.7780    3.2  55.2    5.1   8.7740   3.6 ------	UNKNOWN                       
151.2467  -6.9704    2.6  36.3 -120.3   4.3719   4.5 ------	UNKNOWN                       
218.7208 -45.0451    3.3  58.6  -22.9  11.7390   3.5 ------	UNKNOWN                       
150.4378   4.8816    3.0  47.4 -127.0  10.5072   3.8 ------	UNKNOWN

Plot creation:
Wed Sep 24 13:17:55 EDT 2014