GRB151114A: Summary Image Light curves Spectra Distribution Others

Analysis Summary

Notes:

• 1) No attempt has been made to eliminate the non-significant decimal places.
• 2) This batgrbproduct analysis is done using the HEASARC data.
• 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time: Mon Dec 14 18:17:13 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger663490
======================================================================

  Trigger: 00663490      Segment: 000

  BAT Trigger Time: 469187989.568   [s; MET]
      Trigger Stop: 469187990.08   [s; MET]
               UTC: 2015-11-14T09:59:34.155100    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 120.937400376558   Dec: -61.0422350757683  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.86
     Image Trigger?:     NO
     Rate S/N Ratio:     14.6287388383278  [ if not an image trigger ]
     Image S/N Ratio:    7.86

  Analysis Position:   [ source = BAT ]
    RA: 120.937400376558   Dec: -61.0422350757683  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 120.947396108838   Dec: -61.032809935984  [deg; J2000]  
        { 08h 03m 47.4s , -61d 01' 58.1" }
         +/- 1.76696541978887 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.79400275657402 [arcmin] (formal 1-sigma fit error)
    SNR: 13.4876240179178
 
  Angular difference between the analysis and refined position is 0.635722 arcmin
 
  Partial Coding Fraction: 0.3046875    [ including projection effects ]

  Duration
     T90: 4.85599994659424 +/- 0.976696499773356
        Measured from: -3.76800000667572
                   to: 1.08799993991852     [s; relative to TRIGTIME]
     T50: 2.55599999427795 +/- 1.26618799732541
        Measured from: -1.932000041008
                   to: 0.623999953269958     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0559999942779541     
                   to: 0.944000005722046     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.25999999046326     
                   to: 1.25199997425079     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.232319   0.268409   0.111379   0.047037
           0.028663   0.029981   0.024786   0.022435 [error]
 Peak      0.111614   0.115733   0.056566   0.024120
           0.013749   0.014505   0.011447   0.009963 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    5.512   -4.260    1.252
T90     4.856   -3.768    1.088
T50     2.556   -1.932    0.624
Peak    1.000   -0.056    0.944
 
 
====== Spectral Analysis Summary =====================================
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^{Ph_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 both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedo
 
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: N/A)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      N/A        N/A       N/A          -           -               -           N/A           N/A               N/A         N/A        N/A   
CPL     N/A        N/A        N/A          N/A         N/A           N/A           N/A           N/A               N/A         N/A        N/A   
 
 
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      N/A         N/A       N/A          -           -               -           N/A           N/A               N/A         N/A        N/A   
CPL     N/A         N/A       N/A          N/A         N/A           N/A           N/A           N/A               N/A         N/A        N/A   
 
 
=== 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         PL    N/A      N/A      N/A      N/A      N/A      N/A      erg/cm2

Special notes of this burst

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  120.9474   -61.0328   0.0142    48.7760  -173.7845         0.7234658     13.488 TRIG_00663490                 
 
Foreground time interval of the image:
 -4.260   1.252 (delta_t =   5.512 [sec])
Background time interval of the image:
-239.267  -4.260 (delta_t = 235.007 [sec])

Light Curves

Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.

Full-time range; 1 s binning

Other quick-look light curves:

• 64 ms binning (zoomed)
• 16 ms binning (zoomed)
• 8 ms binning (zoomed)
• 2 ms binning (zoomed)
• SN=5 or 10 s binning (full-time range)
• Raw light curve

Spectra

Notes:

• 1) The fitting includes the systematic errors.
• 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.

Time averaged spectrum fit using the average DRM

Power-law model

Multiple GTIs in the spectrum
tstart tstop
Photon index:       (       )

Cutoff power-law model

Multiple GTIs in the spectrum
tstart tstop
Photon index:       (       )

1-s peak spectrum fit

Power-law model

Time interval is from   -0.056 sec. to    0.944 sec.
Photon index:       (       )

Cutoff power-law model

Time interval is from   -0.056 sec. to    0.944 sec.
Photon index:       (       )

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = N/A sec.
Hardness ratio (energy fluence ratio) = N/A

S(15-50 keV) vs. S(50-150 keV) plot

S(15-50 keV)  = N/A
S(50-150 keV) = N/A

The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.

Mask shadow pattern

IMX = -1.134617090002873E+00, IMY = 1.235697414465125E-01

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:
-239.267410 -4.260000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
259.1503 -76.3903    3.2  33.9 -115.2   1.2096   3.6 ------	UNKNOWN                       

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

Time interval of the image:
-4.260000 1.252000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
120.9474 -61.0328    0.9  48.8 -173.8   0.7237  13.5 ------	UNKNOWN                       
324.4063 -15.0091    2.6  53.8   -6.5   0.3081   4.5 ------	UNKNOWN                       
290.9517 -43.1519    1.7  44.5  -59.1   0.6881   6.8 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
73.932600 962.464400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4896 -40.5423   67.1  22.4 -174.2  -0.0732  -0.2    1.9	Vela X-1                      
170.2277 -60.6435    4.5  23.5  -93.5   1.4201   2.5    2.9	Cen X-3                       
187.0805 -62.7897    0.0  29.8  -81.7  -1.0793  -1.5   11.7	GX 301-2                      
 39.0004 -50.1685    3.5  44.3   40.8   4.0799   3.3 ------	UNKNOWN                       
284.9361 -73.5509    4.4  45.0  -30.7   2.3925   2.7 ------	UNKNOWN