GTAC Observation Log 1. Date : 15/12/2018 2. Observation Sr. No. : 10732 3. Observer : BHAL CHANDRA JOSHI, Yashwant Gupta, Manjari Bagchi, Gopakumar Achamveedu, Abhimanyu Susobhanan, Prakash Arumugasamy, Suryarao Bethapudi, Kishalay De, Neelam Dhanda Batra, Krishnakumar MA, Yogesh Maan, ARUN KUMAR NAIDU, Dhruv Pathak, Mayuresh Surnis, Siraprapa Sanpa-arsa, Uttaran Dutta, Ashis Kumar Paul, SAICHAITANYA SUSARLA, LANKESWAR DEY, Arpita Choudhary, Shantanu Desai 4. Observer's Email : bcj@ncra.tifr.res.in, ygupta@ncra.tifr.res.in, manjari.bagchi@gmail.com, gopu.tifr@gmail.com, s.abhimanyu@tifr.res.in, prakash@ncra.tifr.res.in, ep14btech11008@iith.ac.in, kde@caltech.edu, neelam.dhanda@gmail.com, kkma@ncra.tifr.res.in, ymaan@ncra.tifr.res.in, arun@ncra.tifr.res.in, pathakdhruv9786@gmail.com, mayuresh.surnis@mail.wvu.edu, s.tuck.sanpaarsa@gmail.com, udutta@ncra.tifr.res.in, apaul@ncra.tifr.res.in, saichaitanya16@iisertvm.ac.in, LANKY441@GMAIL.COM, arp.astro@gmail.com, shntn05@gmail.com 5. Project Name : Indian Pulsar Timing Array (InPTA) experiment using the upgraded wideband GMRT and the ORT 6. Project Code : 35_016 7. Operator(s) : Deepak, Navnath, Surender 8. Command File : /odisk/gtac/cmd 9. LTA File : /gwbifrdata/15dec/35_016_15dec2018_suba2_gwb.lta.2, /gwbifrdata/15dec/35_016_15dec2018_suba2_gwb.lta.1, /gwbifrdata/15dec/35_016_15dec2018_suba2_gwb.lta, /gwbifrdata1/15dec/35_016_15dec2018_suba3_gwb.lta.2, /gwbifrdata1/15dec/35_016_15dec2018_suba3_gwb.lta.1, /gwbifrdata1/15dec/35_016_15dec2018_suba3_gwb.lta, /gwbifrdata2/15dec/35_016_15dec2018_suba4_gwb.lta.2, /gwbifrdata2/15dec/35_016_15dec2018_suba4_gwb.lta.1, /gwbifrdata2/15dec/35_016_15dec2018_suba4_gwb.lta 10. LogFlag File : /odisk/online1/logflags/35_016C.FLAGS.10, /odisk/online1/logflags/35_016B.FLAGS.10, /odisk/online1/logflags/35_016A.FLAGS.10 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1371 MHz ,RF2 : 1371 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1320 MHz, ILO2 : 1320MHz , 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) : 1371 1371 1320 1320 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : C01 : Mcm 5 time out C13 : OFC cut W06 : : Surface refurbishment work S04 : frequently applying elevation brake. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 15 Dec 2018 07:00:00 - 15 Dec 2018 17:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : # GWB GAC configuration is as follows : # BEAM-1:130 :: C03 C05 C10 C11 C14 E02 E03 S01 S02 W01 W02 Total=11 # BEAM-1:175 :: C03 C05 C10 C11 C14 E02 E03 S01 S02 W01 W02 Total=11 # BEAM-2:130 :: C04 C06 C09 C12 Total=4 # BEAM-2:175 :: C04 C06 C09 C12 Total=4 # BEAM-3:130 :: C00 C02 C08 E04 S03 S04 W03 W04 Total=8 # BEAM-3:175 :: C00 C02 C08 E04 S03 S04 W03 W04 Total=8 ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 100.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 750 750 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 35_016C GPU_RF3 : 500 500 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 35_016B GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 35_016A GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : Voltage GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 07:00 : Started setup. 07:55 : Manual checked phasing on 3C286. 08:00 : Started command file. 08:10 : Phasing did not worked from command file. 08:15 : Restarted command file. 09:30 : C03 and S04 are removed from GAC 10:20 : C03 started working and included in GAC 10:52 : C01 started working , added in GAC 11:51 : GWB das chain stopped working. 12:05 : Restart GWB DAS chain and command file. 12:20 : J1730-2304 coordinates are matching with SUN, so skipped this source. 13:41 : GWB DAS chian stopped working. 13:51 : Restarted GWB DAS chain. 14:00 : Restarted command file 17:00 : Stopped scan and observing session over.