GTAC Observation Log 1. Date : 27/02/2021 2. Observation Sr. No. : 12933 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) : Nilesh, Sachin, Shilpa, Shriram 8. Command File : /data1/gtac/cmd/39_013/27feb/obs27.py 9. LTA File : /gwbifrdata1/27feb/39_013B_27feb2021_gwb.lta.1, /gwbifrdata1/27feb/39_013B_27feb2021_gwb.lta, /gwbifrdata1/27feb/39_013A_27feb2021_gwb.lta.1, /gwbifrdata1/27feb/39_013A_27feb2021_gwb.lta 10. LogFlag File : 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/TGC 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 : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 306 306 255 255 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C12 : Low self power at CH-1 (GWB) 33. Note for Backup : 34. Start and End Time of Obs.(IST): 27 Feb 2021 04:00:00 - 27 Feb 2021 11:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :28 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 8 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF1 : 1460 1460 GPU_DDCLO1 : 540.000000 540.000000 GPU_SB1 : 1 1 GCODE1 : SUBA1 GPU_RF2 : 1200 1200 GPU_DDCLO2 : 0.000000 0.000000 GPU_SB2 : 1 1 GCODE2 : SUBA2 GPU_RF3 : 1460 1460 GPU_DDCLO3 : 0.000000 0.000000 GPU_SB3 : 1 1 GCODE3 : SUBA3 GPU_RF4 : 470 470 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : SUBA4 GPU_RF5 : 1060 1060 GPU_DDCLO5 : 0.000000 0.000000 GPU_SB5 : 1 1 GCODE5 : SUBA5 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : PA GPU_BEAM_2 : VOLTAGE GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa 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 :: C00 C04 C05 C10 C13 E02 E03 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=16 # BEAM-1:175 :: C00 C04 C05 C10 C13 E02 E03 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=16 # BEAM-2:130 :: C01 C02 C06 C08 C09 C11 C12 C14 Total=8 # BEAM-2:175 :: C01 C02 C06 C08 C09 C11 C12 C14 Total=8 04:45 : Completed setup. 04:51:34 : Started scan on 3C348 for ~ 6.6214 min. 05:20:19 : Started scan on 3C348 for ~ 1.70009 min. 05:22:50 : Started scan on 3C348 for ~ 1.70009 min. 05:27:41 : Started scan on 3C348OFF for ~ 1.70009 min. 05:34:40 : Started scan on 1822-096 for ~ 1.43165 min. 05:36:54 : Started scan on 1822-096 for ~ 1.07374 min. 05:41:12 : Started scan on J1643-1224 for ~ 55.745 min. 06:41:07 : Started scan on 1822-096 for ~ 1.43165 min. 06:43:23 : Started scan on 1822-096 for ~ 1.16322 min. 06:47:55 : Started scan on J1713+0747 for ~ 55.745 min. 07:50:25 : Started scan on 1830-360 for ~ 1.43165 min. 07:52:39 : Started scan on 1830-360 for ~ 1.16322 min. 07:56:56 : Started scan on J1909-3744 for ~ 55.745 min. 08:56:52 : Started scan on 1822-096 for ~ 1.43165 min. 08:59:06 : Started scan on 1822-096 for ~ 1.16322 min. 09:07:25 : Started scan on J1939+2134 for ~ 41.2495 min. 09:59:15 : Started scan on 2225-049 for ~ 1.52113 min. 10:01:31 : Started scan on 2225-049 for ~ 1.2527 min. 10:09:41 : Started scan on 2225-049 for ~ 52.5238 min. 11:08:03 : Started scan on 3C48 for ~ 1.43165 min. 11:10:17 : Started scan on 3C48 for ~ 1.70009 min. 11:15:06 : Started scan on 3C48OFF for ~ 1.70009 min. 11:15 : Observation closed.