batgrbproduct analysis for trigger=1181187

batgrbproduct Analysis for Trigger=1181187

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 v2.48
    Process Start Time (local time): Fri Sep 29 23:35:55 EDT 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1181187
======================================================================

  Trigger: 01181187      Segment: 000

  BAT Trigger Time: 712205434.944   [s; MET]
      Trigger Stop: 712205435.968   [s; MET]
               UTC: 2023-07-28T02:50:03.222400    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 343.538953466444   Dec: 28.1508318660294  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.66
     Image Trigger?:     NO
     Rate S/N Ratio:     15.556349186104  [ if not an image trigger ]
     Image S/N Ratio:    9.66

  Flight Position:   [ source = BAT ]
    RA: 343.538953466444   Dec: 28.1508318660294  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 343.514139413016   Dec: 28.1695139122038  [deg; J2000]  
        { 22h 54m 03.4s , +28d 10' 10.3" }
         +/- 1.30088819788565 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.525027114136543 [arcmin] (formal 1-sigma fit error)
    SNR: 20.8890369280975
 
  Angular difference between Flight and Ground position is 1.726099 arcmin
 
  Partial Coding Fraction: 0.4960938    [ including projection effects ]

  Duration
     T90: 14.7599999904633 +/- 0.892307208733889
        Measured from: -4.85199999809265
                   to: 9.90799999237061     [s; relative to TRIGTIME]
     T50: 5.54799997806549 +/- 3.44707409608694
        Measured from: 0.363999962806702
                   to: 5.91199994087219     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.407999992370605     
                   to: 1.40799999237061     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.62000000476837     
                   to: 10.7400000095367     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.547540   0.710483   0.508162   0.076881
           0.045459   0.047884   0.041728   0.036886 [error]
 Peak      0.081328   0.117314   0.094351   0.005505
           0.012280   0.013879   0.011885   0.008954 [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 1.65e-07 2.90e-07 3.86e-07 1.06e-06 1.13e-06 1.90e-06   erg/cm2
              Error 2.04e-08 2.23e-08 4.06e-08 2.33e-07 9.71e-08 2.68e-07   erg/cm2
Peak flux Power-law 8.52e-01 8.17e-01 5.46e-01 5.70e-01 2.45e+00 2.79e+00   ph/cm2/s
              Error 1.65e-01 1.07e-01 9.28e-02 1.86e-01 3.13e-01 3.65e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.54e-07 3.04e-07 3.94e-07 5.07e-07 1.08e-06 1.36e-06   erg/cm2
              Error 2.36e-08 2.81e-08 4.40e-08 4.12e-07 1.07e-07 4.23e-07   erg/cm2
Peak flux Cutoff-PL 8.26e-01 6.39e-01 3.46e-01 3.21e-01 1.94e+00 2.13e+00   ph/cm2/s
              Error 2.03e-01 1.37e-01 8.70e-02 7.00e-02 3.92e-01 3.35e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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    1.580    0.132    -      -           7.33e-03 5.82e-04   52.730 57
CPL   1.088    0.536      89.3 1587.4      1.32e-02 9.23e-03   49.940 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.581    0.204    -      -           1.92e-02 2.60e-03   56.060 57
CPL   0.295    1.013      64.4   26.7      8.94e-02 1.67e-01   49.730 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: 16.448000 sec.
T50 in the 50-300 keV band: 7.360000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   16.360   -5.620   10.740
T90    14.760   -4.852    9.908
T50     5.548    0.364    5.912
Peak    1.000    0.408    1.408

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  343.5141    28.1695   0.0093    25.5432    80.6202         1.9449755     20.889 TRIG_01181187                 
 
Foreground time interval of the image:
 -5.620  10.740 (delta_t =  16.360 [sec])
Background time interval of the image:
-188.043  -5.620 (delta_t = 182.423 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
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)

Quad-rate summed light curves (from T0-300s to T0+1000s)

Spectral Evolution

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

Time interval is from   -5.620 sec. to   10.740 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57958     ( -0.13113   0.132749 )
Norm@50keV  : 7.33479E-03    ( -0.000584226   0.000580296 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.73     using 59 bins.
 Reduced chi-squared = 0.925088
# Null hypothesis probability of 6.36e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 16.36 sec: 0.936721 ( -0.071591  0.071649 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12526e-06 ( -9.66207e-08  9.7618e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -5.620 sec. to   10.740 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08841     ( -0.570281   0.502612 )
Epeak [keV] : 89.3253      ( -25.9643 3148.92 )
Norm@50keV  : 1.32320E-02    ( -0.0058565   0.0126059 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.94     using 59 bins.
 Reduced chi-squared = 0.891786
# Null hypothesis probability of 7.02e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 16.36 sec: 0.916938 ( -0.07448  0.074421 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.07995e-06 ( -1.06926e-07  1.07823e-07 ) ergs/cm2

Band function

Time interval is from   -5.620 sec. to   10.740 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.9127  (-1.30604  1.46291)
R^2/D10^2   : 0.136273  (-0.0408619   0.0576618)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   85.22     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.10e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.121e-08   1.342e-08
25- 50  3.371e-07   3.460e-08
50-150  4.283e-07   6.920e-08
15-150  8.566e-07   7.894e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 179.288       (-57.135      -178.255)
Norm        : 3.83223       (-0.304755     0.341596)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.25     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.25e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.582e-07   3.284e-08
25- 50  3.004e-07   9.027e-08
50-150  6.351e-07   3.401e-07
15-150  1.094e-06   4.263e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.60180        (-1.55988      1.82055)
R1^2/D10^2  : 1.18000        (-0.642331      1.87024)
kT2 [keV]   : 23.2608        (-4.53167      8.19171)
R2^2/D10^2  : 1.70581E-02    (-0.011445   0.0224078)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   48.92     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.05e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.539e-07   5.606e-08
25- 50  3.030e-07   9.095e-08
50-150  6.208e-07   2.894e-07
15-150  1.078e-06   3.469e-07

Peak spectrum fit

Power-law model

Time interval is from    0.408 sec. to    1.408 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58072     ( -0.20035   0.207181 )
Norm@50keV  : 1.91516E-02    ( -0.00261887   0.00258964 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.06     using 59 bins.
 Reduced chi-squared = 0.983509
# Null hypothesis probability of 5.11e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.44667 ( -0.3134  0.31354 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.79568e-07 ( -2.62193e-08  2.65424e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.408 sec. to    1.408 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.295425     ( -1.12332   0.90232 )
Epeak [keV] : 64.3755      ( -12.8133 40.6796 )
Norm@50keV  : 8.94205E-02    ( -0.0894194   0.244121 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.73     using 59 bins.
 Reduced chi-squared = 0.888036
# Null hypothesis probability of 7.10e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.93944 ( -0.44304  0.34006 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.67888e-07 ( -2.6605e-08  2.75549e-08 ) ergs/cm2

Band function

Time interval is from    0.408 sec. to    1.408 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.1555  (-1.85085  2.15141)
R^2/D10^2   : 0.360509  (-0.143669   0.232131)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.65     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.26e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.524e-08   3.831e-09
25- 50  5.731e-08   9.915e-09
50-150  7.604e-08   1.936e-08
15-150  1.486e-07   2.480e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 166.663       (-69.8251      -165.912)
Norm        : 10.2810       (-1.34387     1.50778)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.97     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.27e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.615e-08   1.457e-08
25- 50  4.918e-08   2.622e-08
50-150  1.012e-07   5.780e-08
15-150  1.765e-07   9.810e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.08908        (-3.30674      5.41264)
R1^2/D10^2  : 5.34167        (-4.76223      26.0636)
kT2 [keV]   : 17.5151        (-3.62305      9.45646)
R2^2/D10^2  : 0.146574    (-0.126882   0.221068)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.17     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.96e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.301e-08   1.198e-08
25- 50  5.063e-08   2.593e-08
50-150  9.133e-08   5.058e-08
15-150  1.650e-07   8.825e-08

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: 1.57958     ( -0.13113   0.132749 )
Norm@50keV  : 7.33479E-03    ( -0.000584226   0.000580296 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.73     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.36e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 16.36 sec: 0.936691 ( -0.0715862  0.0716488 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12512e-06 ( -9.67439e-08  9.7624e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08841     ( -0.570281   0.502612 )
Epeak [keV] : 89.3259      ( -25.9643 2539.46 )
Norm@50keV  : 1.32319E-02    ( -0.00585871   0.0126059 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.94     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.02e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 16.36 sec: 0.916822 ( -0.07446  0.074398 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.08033e-06 ( -1.07102e-07  1.07901e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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)  = 2.90e-07
S(50-100 keV) = 3.86e-07

T90 vs. Hardness ratio plot

T90                                   = 14.7599999904633 sec.
Hardness ratio (energy fluence ratio) = 1.33103

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.29759
Count Ratio (50-100 keV) / (15-25 keV) = 0.928082

Mask shadow pattern

IMX = 7.788767482658679E-02, IMY = -4.715112162178338E-01

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:
-188.043400 -5.620000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.4827  35.1254    4.7  43.5  143.4   3.0471   2.4    7.0	Cyg X-1                       
308.0455  41.0063    5.7  34.6  144.2   1.3191   2.0    4.4	Cyg X-3                       
326.1724  38.3222   49.8  25.2  122.6   0.1132   0.2    0.0	Cyg X-2                       
342.8763  21.3983    3.0  32.2   77.5   2.9241   3.9 ------	UNKNOWN                       
354.4359  31.2312    2.4  20.5   58.4   2.1276   4.8 ------	UNKNOWN                       
 40.9047  61.4449    1.0  25.6  -77.0   5.4107  11.2 ------	UNKNOWN                       
195.2330  78.5237    2.2  49.3 -132.2   9.0921   5.3 ------	UNKNOWN

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

Time interval of the image:
-5.620000 10.740000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6457  35.0720    7.3  43.5  143.2  -0.2894  -1.6    8.2	Cyg X-1                       
308.0534  41.0914   12.2  34.5  144.3  -0.1000  -0.9    8.7	Cyg X-3                       
326.3243  38.2171    8.6  25.2  122.2   0.1096   1.3    9.5	Cyg X-2                       
343.5141  28.1695    0.6  25.5   80.6   1.9449  20.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
77.956600 962.188000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6126  35.1581    1.9  37.7  161.3  16.6854   6.0    2.8	Cyg X-1                       
308.0570  41.0208    5.2  31.6  172.7   4.5546   2.2    4.8	Cyg X-3                       
326.1753  38.2703    5.3  17.7  178.7  -3.1168  -2.2    3.1	Cyg X-2                       
344.6609  -9.0428    3.5  37.2   47.4  10.1150   3.3 ------	UNKNOWN                       
349.9288  66.8751    2.3  38.9 -126.7  14.4238   4.9 ------	UNKNOWN                       
 36.8614  27.4639    2.4  46.8  -53.2  32.5689   4.7 ------	UNKNOWN

Plot creation:
Sat Sep 30 00:46:15 EDT 2023