GTAC Observation Log 1. Date : 23/12/2020 2. Observation Sr. No. : 12717 3. Observer : Aditya Chowdhury, Nissim Kanekar, Jayaram Narayanan Chengalur 4. Observer\'s Email : chowdhury@ncra.tifr.res.in, nkanekar@ncra.tifr.res.in, chengalur@ncra.tifr.res.in 5. Project Name : The HI Mass of Galaxies at the Peak of the Epoch of Galaxy Assembly 6. Project Code : 39_077 7. Operator(s) : Pramod, Sachin 8. Command File : /odisk/gtac/cmd/chowdhury/cosmos.cmd 9. LTA File : /gsbifrdata1/23dec/39_077_23dec2020_gsb.lta, /gsbifrdata1/23dec/39_077_23dec2020_gsb.lta, /gwbifrdata/23dec/39_077_23dec2020_gwb_10s.lta, /gwbifrdata/23dec/39_077_23dec2020_gwb_10s.lta, /gwbifrdata2/23dec/39_077_23dec2020_gwb_2s.lta, /gwbifrdata2/23dec/39_077_23dec2020_gwb_2s.lta 10. LogFlag File : /odisk/online1/logflags/39_077.FLAGS.1, /odisk/online1/logflags/39_077.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 271 MHz ,RF2 : 271 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 220 MHz, ILO2 : 220MHz , 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 : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 271 271 220 220 51 51 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. E06 : ALl mcm time out 33. Note for Backup : 34. Start and End Time of Obs.(IST): 23 Dec 2020 00:00:00 - 23 Dec 2020 08:20:00 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 : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 16384 GPU_CHAN_NUM : 0:16383:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 39_077 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : IA 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-4:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 E05 S01 S02 S03 S04 S06 W01 W02 W03 W04 W05 W06 Total=28 # BEAM-4:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 E05 S01 S02 S03 S04 S06 W01 W02 W03 W04 W05 W06 Total=28 00:00 : Started set from TGC. 00:00 to 00:30 : Since IA (Pulsar) recording was not being done from TGC,the control was taken to online. 00:45 : Started command file. 01:11 : AS target source COSMOS was taking wrong coordinates (both RA and DEc).Hence stopped command file.Therefore COSMOS source coordinates copy to new source list and started command file. In command file time was given in minutes for COSMOS and phase calibrator 1041+027. But only for target source, minutes (m command ) command was considering as second.Hence convert minutes to seconds and restarted command file. 03:30 : C02 removed from GAC because of servo problem. 08:00 : Stopped command file after phase cal. 08:15 : Closed observation session after taking scan on 3C286.