GTAC Observation Log 1. Date : 22/11/2020 2. Observation Sr. No. : 12598 3. Observer : BHAL CHANDRA JOSHI, Yashwant Gupta, Manjari Bagchi, Gopakumar Achamveedu, Shantanu Desai, Prabu Thiagaraj, Abhimanyu Susobhanan, Dhruv Pathak, LANKESWAR DEY, Jaikhomba Singha, Arpita Choudhary, Neelam Dhanda Batra, Krishnakumar MA, Yogesh Maan, Mayuresh Surnis, Suryarao Bethapudi, ARUN KUMAR NAIDU, SAICHAITANYA SUSARLA, Avishek kumar Basu, Nobleson Kunjappy, Raghav Prafulla Girgaonkar, Kishalay De, Periasamy K. Manoharan 4. Observer\'s Email : bcj@ncra.tifr.res.in, ygupta@ncra.tifr.res.in, manjari.bagchi@gmail.com, gopu.tifr@gmail.com, shntn05@gmail.com, prabu@rri.res.in, s.abhimanyu@tifr.res.in, pathakdhruv9786@gmail.com, LANKY441@GMAIL.COM, mjaikhomba@gmail.com, arp.astro@gmail.com, neelam.dhanda@gmail.com, kk.ambalappat@gmail.com, maan@astron.nl, mayuresh.surnis@mail.wvu.edu, ep14btech11008@iith.ac.in, arun@ncra.tifr.res.in, saichaitanya16@iisertvm.ac.in, avishek@ncra.tifr.res.in, nobleson.phy@gmail.com, ep17btech11016@iith.ac.in, kde@caltech.edu, mano@ncra.tifr.res.in 5. Project Name : Indian Pulsar Timing Array (InPTA) experiment using the upgraded wideband GMRT : 2020 Second Update 6. Project Code : 39_013 7. Operator(s) : Navnath, Nilesh, Pramod 8. Command File : /odisk/gtac/cmd/39_013/obs_22nov.cmd 9. LTA File : /gwbifrdata1/22nov/39_013_band5_22nov2020_gwb.lta, /gwbifrdata2/22nov/39_013_band3_22nov2020_gwb.lta 10. LogFlag File : /odisk/online1/logflags/PNTG.FLAGS.3762, /odisk/online1/logflags/39_013B.FLAGS.1, /odisk/online1/logflags/39_013A.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , 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) : 306 306 255 255 51 51 30. Integration Time : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. W03 : FPS problem. W05 : Feed jammed 33. Note for Backup : 34. Start and End Time of Obs.(IST): 22 Nov 2020 11:00:00 - 22 Nov 2020 18:10:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 8 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF3 : 500 500 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 39_013B GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 39_013A GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : PA GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 16 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C02 C06 C08 C09 C11 C12 C14 Total=8 # BEAM-1:175 :: C01 C02 C06 C08 C09 C11 C12 C14 Total=8 # BEAM-2:130 :: C00 C04 C05 C10 C13 E02 E03 E04 S01 S02 S03 S04 W01 W02 W04 Total=15 # BEAM-2:175 :: C00 C04 C05 C10 C13 E02 E03 E04 S01 S02 S03 S04 W01 W02 W04 Total=15 Split antennas as follows : # sub 3 # Band 3 # Beam 1 = Voltaege #C01 C02 C06 C08 C09 C11 C12 C14 ante 8 6 5 20 24 4 9 2 10 cp 0;defs 3;subar 3 # sub 4 # Band 5 # Beam 2 = PA # C00 C03 C04 C05 C10 C13 W01 W02 W03 W04 W05 W06 E02 E03 E04 E05 E06 S01 S02 S03 S04 S06 ante 22 7 1 3 19 12 11 8 13 14 15 16 25 17 18 21 22 23 26 27 28 29 30 cp 0;defs 4;subar 4 11:00 : Started set up. 11:40 : Power equalized and phasing done on 3C286. 11:45 : Started command file. \'/odisk/gtac/cmd/39_013/obs_22nov.cmd\' 11:50:52 : Started scan on 3C286OFF for ~ 1.61061 min. 12:00:00 : Started scan on 1822-096 for ~ 1.16322 min. 12:01:32 : Started scan on 1822-096 for ~ 0.715827 min. 12:04:26 : Started scan on J1643-1224 for ~ 55.745 min. 13:02:25 : Started scan on 1822-096 for ~ 1.2527 min. 13:03:57 : Started scan on 1822-096 for ~ 0.715827 min. 13:06:50 : Started scan on J1713+0747 for ~ 55.745 min. 14:05:56 : Started scan on 1830-360 for ~ 1.16322 min. 14:07:25 : Started scan on 1830-360 for ~ 0.805306 min. 14:10:14 : Started scan on J1909-3744 for ~ 55.8345 min. 15:08:27 : Started scan on 1822-096 for ~ 1.16322 min. 15:09:58 : Started scan on 1822-096 for ~ 0.715827 min. 15:20:41 : Started scan on J1939+2134 for ~ 50.8237 min. 16:20:41 : Started scan on 2225-049 for ~ 1.16322 min. 16:22:13 : Started scan on 2225-049 for ~ 0.715827 min. 16:25:05 : Started scan on J2145-0750 for ~ 50.8237 min. 17:23:58 : Started scan on 2225-049 for ~ 1.2527 min. 17:25:32 : Started scan on 2225-049 for ~ 0.715827 min. 17:28:48 : Started scan on J2124-3358 for ~ 27.6488 min. 18:02:53 : Started scan on 3C48 for ~ 1.52113 min. 18:06:31 : Started scan on 3C48OFF for ~ 1.52113 min. 18:10:00 : observation session over. ------------------------------------------