Session Notes for CN (Concurrent with Rapid Turnaround Monday) session: cn1886 Prepared by C. Thomas, NVI, Inc./GSFC The CN sessions run concurrent with the even R1 session only. The data rate is 2Gbps and the network consists of the 10 VLBA stations. There are six sessions scheduled during 2019. The plan is to add non-VLBA stations to the network. =========================================================== ----- Parameter listing -------------------------------------- Experiment: CN1886 Description 2GBPS CONCURRENT WITH IVS-R1 SESSION Scheduler: NASA Correlator: VLBA Start: 2019-077-17:00:00 End: 2019-078-17:00:00 Current yyyyddd: 2019077 (2019.21) ( 18561 MJD, MON. 18MAR.) Greenwich sidereal time: 04:43:52 (17:00:00 UT) Sun's RA and DEC: 23h 52.0m 0d 52.3 =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Br Fd Hn Kp La Mk Nl Ov Pt Sc 2126-158 19077-170000| 29 38 57 34 41 20 51 37 38 57| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Br Fd Hn Kp La Mk Nl Ov Pt Sc 2056-369 19078-165550| 138 138 73 | 0115-214 19078-165609| 59 58 60 60 60 60 56| 2357-318 19078-165744| 42 20 45 40 28 45 42 20| 0055-059 19078-165911| 44 44 44 44 44 44 44 44 44| =========================================================== SKED Summary from file ./cn1886.skd for experiment CN1886 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 19.8 Min = 0.0 Max = 60.0 (Baseline Br-Hn on 0646-306) RMS = 8.0 Total time: 1440 minutes ( 24.0 hours). Key: Br=BR-VLBA Fd=FD-VLBA Hn=HN-VLBA Kp=KP-VLBA La=LA-VLBA Mk=MK-VLBA Nl=NL-VLBA Ov=OV-VLBA Pt=PIETOWN Sc=SC-VLBA Br Fd Hn Kp La Mk Nl Ov Pt Sc Avg % obs. time: 37 36 36 36 37 30 37 37 37 33 36 % cal. time: 9 10 10 10 10 6 10 9 10 9 9 % slew time: 41 42 42 43 42 30 41 41 42 39 41 % idle time: 12 11 10 10 10 33 10 12 10 18 14 total # scans: 798 850 880 838 854 540 878 790 852 787 806 # scans/hour : 33 35 37 35 36 23 37 33 36 33 34 Avg scan (sec): 40 37 36 38 37 49 36 40 37 36 38 # data tracks: 32 32 32 32 32 32 32 32 32 32 # Mk5 tracks: 32 32 32 32 32 32 32 32 32 32 Total TB(M5): 8.20 8.02 8.00 8.07 8.15 6.74 8.17 8.14 8.11 7.27 7.89 # OF OBSERVATIONS BY BASELINE | Br Fd Hn Kp La Mk Nl Ov Pt Sc Total ------------------------------------------------------------ Br| 719 732 712 734 492 733 712 730 637 6201 Fd| 788 803 835 475 785 712 836 715 6668 Hn| 746 796 444 876 674 785 781 6622 Kp| 800 506 747 743 809 671 6537 La| 470 796 720 843 716 6710 Mk| 445 533 479 380 4224 Nl| 676 785 777 6620 Ov| 725 590 6085 Pt| 708 6700 Sc| 5975 Number of 2-station scans: 0 Number of 3-station scans: 122 Number of 4-station scans: 34 Number of 5-station scans: 29 Number of 6-station scans: 42 Number of 7-station scans: 77 Number of 8-station scans: 83 Number of 9-station scans: 245 Number of 10-station scans: 376 Total number of scans: 1008 Total number of obs: 31171 Total integrated obs-time: 1003650 Average obs-time: 32.2 Histogram of observation durations Dur: 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 #Obs: |15812|11509| 2887| 551| 267| 97| 16| 7| 7| 8| 4| 3| 2| 0| 0| 0| 0| 0| 0| 1| Average S-band SNRs by baseline | Br Fd Hn Kp La Mk Nl Ov Pt Sc AVG ----------------------------------------------------------- Br| 86 77 89 89 85 85 93 89 71 85 Fd| 79 102 102 77 86 101 102 79 91 Hn| 77 80 62 86 78 79 82 79 Kp| 103 80 85 106 104 75 92 La| 78 88 105 105 77 93 Mk| 70 86 79 62 76 Nl| 87 87 79 84 Ov| 107 73 94 Pt| 77 93 Sc| 76 Average X-band SNRs by baseline | Br Fd Hn Kp La Mk Nl Ov Pt Sc AVG ----------------------------------------------------------- Br| 195 173 201 207 183 194 212 205 157 193 Fd| 178 238 243 166 198 239 241 177 211 Hn| 172 185 133 198 173 180 183 178 Kp| 245 173 194 244 244 167 211 La| 171 207 252 253 175 218 Mk| 152 184 173 133 164 Nl| 198 202 175 193 Ov| 251 162 215 Pt| 173 216 Sc| 169 =========================================================== Recording mode Name Code 2GB-VLBA SX Recording mode for: BR-VLBA FD-VLBA HN-VLBA KP-VLBA LA-VLBA MK-VLBA NL-VLBA OV-VLBA PIETOWN SC-VLBA Mode Tot.Rate Tot.BandW #BBC #bits Barrel VLBA1:1 2048 Mbits 512 MHz 16 2 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 32.00 MHz 1 32(*1) 32 S-band spanned bw= 128.0 MHz rms spanned bw= 47.3 MHz X-band spanned bw= 448.0 MHz rms spanned bw= 149.5 MHz Effective number of 1-bit channels recorded per sub-pass S X Total 7.65 22.95 30.61 =========================================================== Monitoring Sources Source Min Max Actual #Num #Scans 1021-006 1.00 1.50 1.01 315 9 1416+067 1.00 1.50 1.17 365 13 1659+399 1.00 1.50 1.56 486 16 1404-342 1.00 1.50 0.49 152 8 1317+520 1.00 1.50 1.56 487 17 2056-369 1.00 1.50 0.39 121 7 2207+356 1.00 1.50 1.05 328 11 0601-172 1.00 1.50 0.69 214 7 2335-181 1.00 1.50 0.49 154 5 0423+233 1.00 1.50 0.73 229 9 0636+680 1.00 1.50 1.58 491 14 0206+136 1.00 1.50 0.65 203 7 0745+241 1.00 1.50 1.03 322 12 0227-369 1.00 1.50 0.35 108 7 1616+063 1.00 1.50 1.43 445 13 Total 14.18 4420 155 =========================================================== Minor Options Astro Abs 1.50 BegScan Abs 1.00 EndScan Rel 1.00 NumObs Rel 1.00 SrcEvn Abs 1.00 SQRT StatIdle Abs 4.00 StatWt Abs 1.00 =========================================================== Major Options Subnet BrFdHnKpLaMkNlOvPtSc SkyCov Yes AllBlGood No MaxAngle 120.00 MinAngle 5.00 MinBetween 20 MinSunDist 5.00 MaxSlewTime 200 TimeWindow 4.00 MinSubNetSize 3 NumSubNet 1 Best 60 FillIn Yes FillMinSub 2 FillMinTime 90 FillBest 80 Add_ps 30.0 SNRWts Yes SplitTwins No =========================================================== Weighted Station 3 HN-VLBA 3.00 =========================================================== Tape types ID Station Tape length Density Passes Br BR-VLBA Mark5A Fd FD-VLBA Mark5A Hn HN-VLBA Mark5A Kp KP-VLBA Mark5A La LA-VLBA Mark5A Mk MK-VLBA Mark5A Nl NL-VLBA Mark5A Ov OV-VLBA Mark5A Pt PIETOWN Mark5A Sc SC-VLBA Mark5A =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans S-band (margin 0) X-band (margin 0) S-band (ast_margin 0) X-band (ast_margin 0) Br Fd Hn Kp La Mk Nl Ov Pt Br Fd Hn Kp La Mk Nl Ov Pt Fd 20 Fd 25 Hn 20 20 Hn 25 25 Kp 20 20 20 Kp 25 25 25 La 20 20 20 20 La 25 25 25 25 Mk 20 20 20 20 20 Mk 25 25 25 25 25 Nl 20 20 20 20 20 20 Nl 25 25 25 25 25 25 Ov 20 20 20 20 20 20 20 Ov 25 25 25 25 25 25 25 Pt 20 20 20 20 20 20 20 20 Pt 25 25 25 25 25 25 25 25 Sc 20 20 20 20 20 20 20 20 20 Sc 25 25 25 25 25 25 25 25 25