batgrbproduct analysis for trigger=1011980

batgrbproduct Analysis for Trigger=1011980

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): Sat Jul 30 00:47:25 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1011980
======================================================================

  Trigger: 01011980      Segment: 000

  BAT Trigger Time: 629185518.656   [s; MET]
      Trigger Stop: 629185519.68   [s; MET]
               UTC: 2020-12-09T05:44:52.534740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 23.1056567215306   Dec: -1.76338021356593  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.19
     Image Trigger?:     NO
     Rate S/N Ratio:     43.2434966208793  [ if not an image trigger ]
     Image S/N Ratio:    10.19

  Flight Position:   [ source = BAT ]
    RA: 23.1056567215306   Dec: -1.76338021356593  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 23.0969626925961   Dec: -1.76291815011866  [deg; J2000]  
        { 01h 32m 23.3s , -01d 45' 46.5" }
         +/- 1.12924656720917 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.360167182451262 [arcmin] (formal 1-sigma fit error)
    SNR: 25.5685346200828
 
  Angular difference between Flight and Ground position is 0.522131 arcmin
 
  Partial Coding Fraction: 0.1142578    [ including projection effects ]

  Duration
     T90: 48 +/- 16
        Measured from: -31.6560000181198
                   to: 16.3439999818802     [s; relative to TRIGTIME]
     T50: 16 +/- 16
        Measured from: -15.6560000181198
                   to: 0.343999981880188     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.84399998188019     
                   to: 8.84399998188019     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -31.6560000181198     
                   to: 32.3439999818802     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     4.483643   7.638293   5.879188   1.857087
           0.221120   0.234824   0.201594   0.162980 [error]
 Peak      0.276333   0.535227   0.408129   0.144483
           0.034294   0.043331   0.039335   0.028534 [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 2.00e-06 3.53e-06 4.78e-06 1.34e-05 1.38e-05 2.37e-05   erg/cm2
              Error 1.36e-07 1.45e-07 2.01e-07 1.23e-06 5.05e-07 1.35e-06   erg/cm2
Peak flux Power-law 4.03e+00 4.06e+00 2.88e+00 3.24e+00 1.23e+01 1.42e+01   ph/cm2/s
              Error 6.35e-01 4.04e-01 3.09e-01 6.97e-01 1.15e+00 1.28e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.86e-06 3.62e-06 4.93e-06 9.02e-06 1.36e-05 1.95e-05   erg/cm2
              Error 1.68e-07 1.62e-07 2.34e-07 2.78e-06 5.32e-07 2.77e-06   erg/cm2
Peak flux Cutoff-PL 2.96e+00 1.88e+00 8.04e-01 6.09e-01 5.90e+00 6.16e+00   ph/cm2/s
              Error 9.32e-01 6.82e-01 4.41e-01 2.64e-01 1.76e+00 2.00e+00   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    1.562    0.062    -      -           2.30e-02 8.17e-04   85.210 57
CPL   1.253    0.252     131.9  147.0      3.21e-02 8.68e-03   80.510 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.498    0.147    -      -           9.82e-02 8.89e-03   53.270 57
CPL   1.213    0.526     148.1  -38.7      1.35e-01 9.80e-02   52.660 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: 28.032000 sec.
T50 in the 50-300 keV band: 10.304000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.000  -31.656   32.344
T90    48.000  -31.656   16.344
T50    16.000  -15.656    0.344
Peak    1.000    7.844    8.844

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
   23.0970    -1.7629   0.0075    50.8417   169.3183        18.3744612     25.569 TRIG_01011980                 
 
Foreground time interval of the image:
-31.656  11.445 (delta_t =  43.101 [sec])
Background time interval of the image:
-199.155 -31.656 (delta_t = 167.499 [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  -31.656 sec. to   32.344 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56221     ( -0.0620561   0.0619481 )
Norm@50keV  : 2.30320E-02    ( -0.000816966   0.000816966 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   85.21     using 59 bins.
 Reduced chi-squared = 1.49491
# Null hypothesis probability of 9.13e-03 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 64 sec: 2.92621 ( -0.11674  0.11713 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.38551e-05 ( -5.04529e-07  5.05079e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -31.656 sec. to   32.344 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25300     ( -0.25931   0.245156 )
Epeak [keV] : 131.950      ( -36.7121 257.376 )
Norm@50keV  : 3.21431E-02    ( -0.00729489   0.0100702 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   80.51     using 59 bins.
 Reduced chi-squared = 1.43768
# Null hypothesis probability of 1.76e-02 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 64 sec: 2.87527 ( -0.12274  0.12322 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.3654e-05 ( -5.33226e-07  5.31658e-07 ) ergs/cm2

Band function

Time interval is from  -31.656 sec. to   32.344 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]    : 16.1645  (  )
R^2/D10^2   : 0.248090  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  257.27     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.06e-27 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.558e-07   6.176e-08
25- 50  3.633e-06   1.776e-07
50-150  6.660e-06   4.125e-07
15-150  1.115e-05   4.512e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-24.4161      -200)
Norm        : 11.9275       (-0.422684     0.422684)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   80.61     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.15e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.902e-06   8.064e-08
25- 50  3.658e-06   1.510e-07
50-150  8.022e-06   3.232e-07
15-150  1.358e-05   5.920e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.66990        (-0.894246      0.954345)
R1^2/D10^2  : 1.58409        (-0.44544      0.67116)
kT2 [keV]   : 32.7564        (-4.65914      7.26341)
R2^2/D10^2  : 1.51980E-02    (-0.00739713   0.0111951)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   72.76     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.46e-02 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.608e-06   1.683e-07
25- 50  3.897e-06   2.931e-07
50-150  8.173e-06   1.255e-06
15-150  1.368e-05   1.386e-06

Peak spectrum fit

Power-law model

Time interval is from    7.844 sec. to    8.844 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49792     ( -0.146628   0.148038 )
Norm@50keV  : 9.81969E-02    ( -0.0088976   0.00887446 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.27     using 59 bins.
 Reduced chi-squared = 0.934561
# Null hypothesis probability of 6.16e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 12.2523 ( -1.1524  1.1543 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.31987e-07 ( -8.9545e-08  8.98697e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    7.844 sec. to    8.844 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.21322     ( -0.686711   0.365227 )
Epeak [keV] : 148.071      ( -70.6743 -148.084 )
Norm@50keV  : 0.135207    ( -0.0444706   0.151563 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.66     using 59 bins.
 Reduced chi-squared = 0.940357
# Null hypothesis probability of 6.02e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 5.89702 ( -1.45523  2.06523 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.24358e-07 ( -4.97771e-08  9.18673e-08 ) ergs/cm2

Band function

Time interval is from    7.844 sec. to    8.844 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]    : 15.9123  (-1.61856  1.82245)
R^2/D10^2   : 1.18068  (-0.380928   0.546343)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   79.87     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.45e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.189e-08   1.066e-08
25- 50  2.592e-07   3.360e-08
50-150  4.577e-07   6.805e-08
15-150  7.788e-07   9.305e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-47.9006      -200)
Norm        : 50.5398       (-4.55589     4.55589)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.42     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.10e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.264e-07   1.410e-08
25- 50  2.431e-07   3.745e-08
50-150  5.331e-07   1.727e-07
15-150  9.026e-07   2.447e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.88458        (-3.42659      2.92164)
R1^2/D10^2  : 4.52797        (-2.40745      11.0291)
kT2 [keV]   : 40.9187        (-18.3791      -41.2455)
R2^2/D10^2  : 3.13491E-02    (-0.0294563   0.228615)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.35     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.00e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.640e-08   2.749e-08
25- 50  2.652e-07   8.160e-08
50-150  5.603e-07   2.636e-07
15-150  9.219e-07   3.541e-07

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: 1.51487     ( -0.0624699   0.0622967 )
Norm@50keV  : 2.99297E-02    ( -0.00107174   0.00107168 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   76.87     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.08e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 43.1 sec: 3.75154 ( -0.150883  0.151369 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22081e-05 ( -4.48675e-07  4.48934e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23425     ( -0.260296   0.246189 )
Epeak [keV] : 150.988      ( -47.2739 538.017 )
Norm@50keV  : 4.03785E-02    ( -0.00911356   0.0125283 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.06     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.25e-02 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 43.1 sec: 3.69364 ( -0.15811  0.15874 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.20658e-05 ( -4.71342e-07  4.69531e-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)  = 3.53e-06
S(50-100 keV) = 4.78e-06

T90 vs. Hardness ratio plot

T90                                   = 48 sec.
Hardness ratio (energy fluence ratio) = 1.35411

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.70359
Count Ratio (50-100 keV) / (15-25 keV) = 1.31125

Mask shadow pattern

IMX = -1.206666607996190E+00, IMY = -2.276023443369052E-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:
-199.155400 -31.656000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6156  22.0255    1.1  34.2   69.1   6.8335  10.4    1.2	Crab                          
 74.7803   7.7557    2.8  40.8   94.4   5.7616   4.2 ------	UNKNOWN                       
 84.7340  26.3127    0.3  32.1   62.0  20.3222  33.9 ------	UNKNOWN                       
 27.8804  -5.7572    2.8  52.6  161.7   6.3573   4.2 ------	UNKNOWN                       
125.4569  42.4944    2.7  53.2   15.4   4.8951   4.3 ------	UNKNOWN                       
 17.3725   7.3799    2.5  45.8 -177.9   3.1126   4.7 ------	UNKNOWN                       
  9.2292  30.9497    3.0  34.8 -143.0   1.6952   3.9 ------	UNKNOWN                       
351.3429  25.3563    2.3  51.0 -137.1   7.6807   5.1 ------	UNKNOWN

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

Time interval of the image:
-31.656000 11.444600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.5220  21.9264    4.5  34.2   69.3   0.7458   2.6    8.1	Crab                          
 55.1593  15.1343    2.7  27.7  123.3   0.8188   4.3 ------	UNKNOWN                       
 23.0970  -1.7629    0.5  50.8  169.3  18.3751  25.6 ------	UNKNOWN                       
 36.6936  33.8978    2.5  14.0 -171.1   0.5397   4.7 ------	UNKNOWN                       
128.6595  71.4031    2.5  46.4  -21.8   0.9217   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
99.444590 962.427100
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
352.9920  20.7673    3.8  37.1  -22.1   2.9607   3.1 ------	UNKNOWN                       
348.3534   1.5462    3.5  34.9  -55.9   4.2735   3.3 ------	UNKNOWN                       
  2.6558 -47.7142    3.3  49.3 -133.0  12.7459   3.5 ------	UNKNOWN                       
359.8755 -45.1308    2.5  48.0 -129.1  15.9859   4.7 ------	UNKNOWN

Plot creation:
Sat Jul 30 07:24:18 EDT 2022