GTAC Observation Log 1. Date : 21/08/2017 2. Observation Sr. No. : 9690 3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Nikhil Vijay Naik, Kishalay De, Yogesh Maan, Manjari Bagchi, Jayanta Roy, Gopakumar Achamveedu 4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, naiknikhil27@gmail.com, ugkishalayde@ug.iisc.in, ymaan@ncra.tifr.res.in, manjari.bagchi@gmail.com, jroy@ncra.tifr.res.in, gopu.tifr@gmail.com 5. Project Name : Towards precision pulsar timing with the upgraded GMRT 6. Project Code : 32_032 7. Operator(s) : Navnath, Nilesh 8. Command File : /odisk/gtac/cmd/32_032/20aug17.cmd 9. LTA File : /gwbifrdata/20aug/32_032_20aug2017_750.lta.1, /gwbifrdata/20aug/32_032_20aug2017_750.lta, /gwbifrdata/20aug/32_032_20aug2017_500.lta.1, /gwbifrdata/20aug/32_032_20aug2017_500.lta, /gwbifrdata/20aug/32_032_20aug2017_1460.lta.1, /gwbifrdata/20aug/32_032_20aug2017_1460.lta 10. LogFlag File : /odisk/online1/logflags/DDTB284.FLAGS.3 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1454 1454 1505 1505 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :23 32. Name of Non-Working Antennas (with reason for each) : C05 : Servo problem E05 : Feed jammed. E06 : Frequently getting ABC reset. S03 : Channel ONE no fringe. C10 : Frequently apply brakes in elevation. C12 : MCM 5 Time out. C13 : Feed Jam. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 20 Aug 2017 18:00:00 - 20 Aug 2017 23:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :23 37. Comments (During Observations) : # suba 2 # C01 C04 C06 W01 S01 ---- Beam I. ante 5 6 3 20 8 26 cp 0;defs 2;subar 2 # suba 3 # C02 C03 C09 W02 E03 S02 --------- Beam III. ante 6 5 1 4 13 18 27 cp 0;defs 3;subar 3 # suba 4 # C00 C05 C08 C10 C11 C12 C13 C14 W03 W04 W05 W06 E02 E04 E05 E06 S03 S04 S06 ------------Beam II ante 19 7 19 24 12 9 2 11 10 14 15 16 25 17 21 22 23 28 29 30 cp 0;defs 4;subar 4 ===================================================================== # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C04 C06 S01 W01 Total=5 # BEAM-1:175 :: C01 C04 C06 S01 W01 Total=5 # BEAM-2:130 :: C00 C08 C11 C14 E02 E04 E05 S04 S06 W03 W04 W05 W06 Total=13 # BEAM-2:175 :: C00 C08 C11 C14 E02 E04 E05 S03 S04 S06 W03 W04 W05 W06 Total=14 # BEAM-3:130 :: C02 C03 E03 S02 W02 Total=5 # BEAM-3:175 :: C02 C03 E03 S02 W02 Total=5 # BEAM-4:130 :: Total=0 # BEAM-4:175 :: Total=0 ======================================================================= ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF1 : 1460 1460 GPU_DDCLO1 : 0.0000 0.0000 GPU_SB1 : 1 1 GCODE1 : SUBA1 GPU_RF2 : 500 500 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 32_032B GPU_RF3 : 750 750 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 32_032C GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 32_032 GPU_RF5 : 0 0 GPU_DDCLO5 : 0.0000 0.0000 GPU_SB5 : 1 1 GCODE5 : SUBA5 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : PA GPU_BEAM_2 : PA GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 8 -------------------------------- 18:00 : Started sub-array splitting and feed rotation for 3 frequencies. 18:30 : Started power eq @ 150 counts on 3C286. 18:35 : Started phasing on 3C286. 18:36:48 : Started scan on 3C286 for ~ 1.29744 min. 18:41:01 : Started scan on 3C286 for ~ 4.65288 min. 18:45:48 : Started scan on 3C286 for ~ 2.32644 min. 18:50 : Started cmd file. /odisk/gtac/cmd/32_032/20aug17.cmd 18:51:40 : Started scan on 1311-222 for ~ 1.11848 min. 18:53:05 : Started scan on 1311-222 for ~ 3.40018 min. 18:56:45 : Started scan on 1311-222 for ~ 0.850045 min. 18:59:16 : Started scan on J1455-3330 for ~ 20.4011 min. 19:22:45 : Started scan on 1822-096 for ~ 1.16322 min. 19:24:10 : Started scan on 1822-096 for ~ 0.805306 min. 19:27:55 : Started scan on J1614-2230 for ~ 20.3116 min. 19:52:35 : Started scan on 1609+266 for ~ 1.07374 min. 19:53:55 : Started scan on 1609+266 for ~ 0.805306 min. 19:56:16 : Started scan on J1640+2224 for ~ 20.3116 min. 20:17:52 : Started scan on 1609+266 for ~ 1.16322 min. 20:19:17 : Started scan on 1609+266 for ~ 0.805306 min. 20:23:35 : Started scan on J1713+0747 for ~ 20.4011 min. 20:47:00 : Started scan on 1830-360 for ~ 1.16322 min. 20:48:24 : Started scan on 1830-360 for ~ 0.805306 min. 20:50:55 : Started scan on J1730-2304 for ~ 20.4011 min. 21:12:50 : Started scan on 1830-360 for ~ 1.11848 min. 21:14:14 : Started scan on 1830-360 for ~ 0.850045 min. 21:14 : W02 removed from GAC (Beam 3 - 610 MHz). # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C04 C06 S01 W01 Total=5 # BEAM-1:175 :: C01 C04 C06 S01 W01 Total=5 # BEAM-2:130 :: C00 C08 C11 C14 E02 E04 E05 S04 S06 W03 W04 W05 W06 Total=13 # BEAM-2:175 :: C00 C08 C11 C14 E02 E04 E05 S03 S04 S06 W03 W04 W05 W06 Total=14 # BEAM-3:130 :: C02 C03 E03 S02 Total=4 # BEAM-3:175 :: C02 C03 E03 S02 Total=4 21:17:36 : Started scan on J1738+0333 for ~ 20.3563 min. 21:40:38 : Started scan on 1830-360 for ~ 1.07374 min. 21:41:57 : Started scan on 1830-360 for ~ 0.894784 min. 21:46:02 : Started scan on J1857+0943 for ~ 20.4011 min. 22:09:40 : Started scan on 1830-360 for ~ 1.16322 min. 22:11:05 : Started scan on 1830-360 for ~ 0.805306 min. 22:13:07 : Started scan on J1909-3744 for ~ 20.3116 min. 22:41:56 : Started scan on 2202+422 for ~ 1.07374 min. 22:43:16 : Started scan on 2202+422 for ~ 3.40018 min. 22:48:54 : Started scan on 2202+422 for ~ 1.43165 min. 22:50:37 : Started scan on 2202+422 for ~ 0.939523 min. 22:52:39 : Started scan on J2302+4442 for ~ 0 min. 23:01:16 : Started scan on J2302+4442 for ~ 1.65535 min. 23:02:00 : GWB strtndas and stpndas scan are not in sync with GSB. i.e. strtndas for one subar is interpreted as stpndas for other subar for GWB. 23:10:00 : So restarted GSB and GWB. 23:15:33 : Started scan on 2202+422 for ~ 1.43165 min. 23:17:16 : Started scan on 2202+422 for ~ 0.984262 min. 23:19:32 : Started scan on J2302+4442 for ~ 20.4011 min. 23:42:05 : Started scan on 3C48 for ~ 1.52113 min. 23:43:53 : Started scan on 3C48 for ~ 0.984262 min. 23:57:03 : Started scan on J0023+0923 for ~ 20.4011 min. 00:25:00 : Started scan on 1830-360 for ~ 1.11848 min. 00:26:24 : Started scan on 1830-360 for ~ 0.850045 min. 00:29:32 : Started scan on J1857+0943 for ~ 20.3563 min. 00:50 : Observation stopped.