GTAC Observation Log 1. Date : 26/05/2021 2. Observation Sr. No. : 13123 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, Subhajit Dandapat, Nikita Agarwal 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, subhajit.phy97@gmail.com, nikitaagar2503@gmail.com 5. Project Name : Indian Pulsar Timing Array (InPTA) experiment using the upgraded wideband GMRT : 2021 Update 6. Project Code : 40_012 7. Operator(s) : Manisha, Navnath 8. Command File : /data1/gtac/cmd/40_012/40_012_26May2021.py 9. LTA File : /gwbifrdata2/26may/40_012_26may2021_suba4_band5.lta, /gwbifrdata2/26may/40_012_26may2021_suba3_band3.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 : 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. E02 : : Maintenance.(Feed removed) GAB_E03 : set gabconf is not allowed in OK 33. Note for Backup : 34. Start and End Time of Obs.(IST): 26 May 2021 23:00:00 - 26 May 2021 09:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :27 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 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_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_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : VOLTAGE GPU_BEAM_3 : PA 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 : ON GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED -------------------------------- 23:40:00 : Started setup 00:09:11 : Started scan on 3C286 for ~ 12.527 min. 00:10:00 : Fringe checking and Power equalization. : removed E02,E03 --no fringe at L band 00:40:00 : Started scan on 3C286 for ~ 4.47392 min. : Phasing done. 00:40:00 : GAC Configuration finalized. # 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 # BEAM-3:130 :: C00 C04 C05 C10 C13 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=14 # BEAM-3:175 :: C00 C04 C05 C10 C13 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=14 00:45:00 : Started cmd file. /data1/gtac/cmd/40_012/40_012_26May2021.py 00:48:32 : Started scan on 3C286 for ~ 2.058 min. 00:51:03 : Started scan on 3C286 for ~ 1.43165 min. 01:10:00 : C01 removed from GAC. 02:00:00 : C01 added in GAC and C13 removed from GAC. # 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 # BEAM-3:130 :: C00 C04 C05 C10 C13 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=14 # BEAM-3:175 :: C00 C04 C05 C10 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=13 08:45 : Stopped command file, C05 LMC is down so phasing did not happen for Lband antennnas. 08:48 : changed ref antenna to C04 for Lband phasing and started command file end_1.py. 09:40 : command file finished. Observation session stopped.