# uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 260127d03h31m51s876838usUT
# /Home/eud/uvot_tdrss/perl/uvot_fluxes_wget.pl -seq=00021898001 -use_uvot -rebin -plot_mag -sens_corr -search_src_reg -wrk_dir=/data/uvot/swift_data/home/uvot_lc -web -useprev -zp_2011 -gamma=1.0 -use_filter_wtd=white v b u
# Current directory: /data/uvot/swift_data/home/uvot_lc
# ========= unknown GRB ===================
Could not find/read custom source region custom_021898_src.reg
Used archived BAT position of 188.19000 43.89300
Reference: GCN_FOM_Notice_Sat_17_Jan_26_23:09:31_UT
The position is (12:32:45.60, +43:53:34.8)
Using source region:
# Region file format: DS9 version 3.0
# uvot_fluxes.pl bat
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(188.190,+43.893,3") # color=red dash=0
Source region spec. is: 188.190 +43.893 3"
Region file centered at (188.190,+43.893), which is (12:32:45.60, +43:53:34.8)
Could not find/read custom background region custom_021898_bkg.reg
Made source region file with 5" aper with name uvot_flux_src5.reg
Coincidence losses are calculated using a 5" aperture.
Exposure times (t_exp) have NOT been corrected for coinc. loss, but rates and mags have been.
The no. of background pixels has been corrected by the ratio of coincidence loss corrections in the source and background regions.
The errors have been adjusted to account for the binomial distribution of counts at large rates.
A table entry starting with # is an exposure with no aspect solution.
A table entry starting with ! has no pixels in either source or background region.
A table entry starting with % is unreliable because it is not well inside the image.
Upper limits in tables give the 0.9987 confidence limit using Bayesian analysis for detection taking the observed counts into account.
Upper limits in plots give the 0.9772 confidence limit using Bayesian analysis.
Weighted rates in tables (wtd_rate) combine rates from different exposures weighted by the expected source rate divided by the background rate
The source is assumed to produce the same magnitude in all filters.
The source is assumed to decay as t**(-1.0), and the rate is normalized so that the white filter produces 1 cps at 1000 sec.
The Rebinned Data for All_files combine rates from different exposures weighted by the expected rate divided by the observed sigma squared.
A plot of these data is stored in uvot_fluxes_wtd_date.ps and .gif.
A zero point of 20.29 is adopted for weighting rates.
*** Since no accurate position is available, set rates to 0. and compute ULs based on expected background in source aperture.
Because there are many possible positions for a source, the confidence levels should be increased for upper limits.
Using the ratio of the BAT region and the aperture of 3600.0,
3 sigma should become about 5.1 sigma and 2 sigma should become about 4.5 sigma.
Accordingly confidence limits in the tables have been adjusted from 0.9987 to 0.99999964.
No adjustment has been made for the confidence limits for the rebinned data or the plots.
Failed to find trigger time in BAT summary file for trigger 00021898
# ============ Reading file sw00021898001uwh_sk.img ================
Use keyword TRIGTIME of 790371842.063 for trigger time.
Long-term sensitivity correction to zero point is -0.175 at 790385075
The processing date in extension 0 is: 2026-01-27T03:12:58
The trigger time is: 790371842.063. The reference is keyword in image file
Using zero point of 20.115 for filter WHITE
Use aperture correction of 1.108 based on aperture of 3.00
Using background region based on sources found in extension 2:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(188.190,+43.893,25")
fk5;-circle(188.190,+43.893,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
Low bkg: 1 wh790385074I 708.4 0 5836 0.000 0.000
# 1 wh790385074I 13232.8 1.00 708.4 0.0 116 0 5836
2 wh790391025I 19183.9 0.94 401.0 1485.0 112 77569 5856 0.000 0.115 99.00 20.7 0.0000 0.1147 99.00 20.7 401 0.000 2.621 99.00 0.011
Sum (T+ 19184 to 19708): 1483.6 1483.6 (est. in src region) SNR_unwtd_sum: 0.00 0.999999638888889 signif. UL: 20.70
0 401 790391288 19446.0 262.1 -262.1 0.0000 0.1147 99.000 99.000 -99.000
Total wtd_rate (for all exposures so far): 0.000 +/- 2.597 snr: 0.0 mag: 99.00 UL: 17.31
Rebinned Data for sw00021898001uwh_sk.img using a zero point of 20.115:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 375 19446.0 262.1 -262.1 0.0000 0.1147 99.00 99.00 19446.0 0.0000 0.1147 99.00 99.00 21.20
=========================================================
================ Start New Filter V ==================
=========================================================
# ============ Reading file sw00021898001uvv_sk.img ================
Use keyword TRIGTIME of 790371842.063 for trigger time.
Long-term sensitivity correction to zero point is -0.231 at 790391557
The processing date in extension 0 is: 2026-01-27T03:12:59
The trigger time is: 790371842.063. The reference is keyword in image file
Using zero point of 17.659 for filter V
Use aperture correction of 1.087 based on aperture of 3.00
Using background region based on sources found in extension 1:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(188.190,+43.893,25")
fk5;-circle(188.190,+43.893,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 vv790391557I 19715.3 0.99 63.5 48.8 116 2840 5880 0.000 0.131 99.00 18.1 0.0000 0.1315 99.00 18.1 63 0.000 29.301 99.00 0.005
Sum (T+ 19715 to 19780): 56.0 56.0 (est. in src region) SNR_unwtd_sum: 0.00 0.999999638888889 signif. UL: 18.09
0 63 790391590 19747.5 32.2 -32.2 0.0000 0.1315 99.000 99.000 -99.000
Total wtd_rate (for all exposures so far): 0.000 +/- 2.539 snr: 0.0 mag: 99.00 UL: 14.88
Rebinned Data for sw00021898001uvv_sk.img using a zero point of 17.659:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 62.5 19747.5 32.2 -32.2 0.0000 0.1315 99.00 99.00 19747.5 0.0000 0.1315 99.00 99.00 18.59
=========================================================
================ Start New Filter U ==================
=========================================================
# ============ Reading file sw00021898001uuu_sk.img ================
Use keyword TRIGTIME of 790371842.063 for trigger time.
Long-term sensitivity correction to zero point is -0.251 at 790384348
The processing date in extension 0 is: 2026-01-27T03:12:58
The trigger time is: 790371842.063. The reference is keyword in image file
Using zero point of 18.089 for filter U
Use aperture correction of 1.100 based on aperture of 3.00
Using background region based on sources found in extension 1:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(188.190,+43.893,25")
fk5;-circle(188.190,+43.893,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 uu790384348I 12506.4 1.00 708.4 123.2 116 7242 5880 0.000 0.019 99.00 20.6 0.0000 0.0188 99.00 20.6 708 0.000 1.837 99.00 0.051
Low bkg: 2 uu790390493I 516.5 0 5856 0.000 0.000
2 uu790390493I 18651.8 1.00 516.5 0.0 116 0 5856 0.000 0.002 99.00 23.0 0.0000 0.0109 99.00 21.2 1225 -0.297 0.305 99.00 0.075
Sum (T+ 12506 to 19177): 142.9 142.9 (est. in src region) SNR_unwtd_sum: 0.00 0.999999638888889 signif. UL: 21.23
0 1225 790387258 15416.4 3760.2 -2910.0 0.0000 0.0109 99.000 99.000 -99.000
Total wtd_rate (for all exposures so far): -0.293 +/- 0.300 snr: -1.0 mag: 99.00 UL: 17.81
Rebinned Data for sw00021898001uuu_sk.img using a zero point of 18.089:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 1.22e+03 15421.4 3755.1 -2915.0 0.0000 0.0109 99.00 99.00 15421.4 0.0000 0.0109 99.00 99.00 21.73
The data range from T+12506.4 s (0.14 d) to T+19779.8 s (0.23 d)
Wrote uvot_fluxes_260127d03h31m51s876838usUT.qdp
Wrote uvot_fluxes_260127d03h31m51s876838usUT.gif
Wrote uvot_fluxes_260127d03h31m51s876838usUT.ps
Wrote uvot_fluxes_260127d03h31m51s876838usUT_vis.qdp
Wrote uvot_fluxes_260127d03h31m51s876838usUT_uv.qdp
Wrote uvot_fluxes_260127d03h31m51s876838usUT_vis.gif
Wrote uvot_fluxes_260127d03h31m51s876838usUT_vis.ps
# ================ Make Light Curve for Weighted Filters ==========
Use the following filters with indicated color corrections (mags):
white (0) , v (0) , u (0) , b (0) ,
Rebinned Data for All_files using a zero point of 20.290:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 1.57 18805.9 973.9 -6299.5 -0.0146 0.0184 99.00 99.00 18805.9 -0.0146 0.0184 99.00 99.00 23.57
The data range from T+12506.4 s (0.14 d) to T+19779.8 s (0.23 d)
Wrote uvot_fluxes_wtd_260127d03h31m51s876838usUT.qdp
Wrote uvot_fluxes_wtd_260127d03h31m51s876838usUT.gif
Wrote uvot_fluxes_wtd_260127d03h31m51s876838usUT.ps
Found 2 exposures with unusual background rate
Normal end of uvot_fluxes_wget.pl vrs. 2024-08-27 fem