GTAC Observation Log 1. Date : 15/03/2022 2. Observation Sr. No. : 14030 3. Observer : Nissim Kanekar, Aditya Chowdhury, Balpreet Kaur, Jayaram Narayanan Chengalur 4. Observer\'s Email : nkanekar@ncra.tifr.res.in, chowdhury@ncra.tifr.res.in, bkaur@ncra.tifr.res.in, chengalur@ncra.tifr.res.in 5. Project Name : %latex% An Unbiased HI 21cm Absorption Survey at $z \\\\\\\\approx 0.7 - 1.5$ 6. Project Code : 41_058 7. Operator(s) : Sachin, Shilpa, Shriram, Surender 8. Command File : /data1/gtac/cmd/41_058/cosmos3.py,, /data1/gtac/cmd/41_058/cosmos7_14march.py 9. LTA File : /gsbifrdata/14mar/41_058_14mar2022_gsb.lta, /gwbifrdata/14mar/41_058_14mar2022_gwb_2.5s.lta, /gwbifrdata/14mar/41_058_14mar2022_gwb_10s.lta 10. LogFlag File : ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , 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 : 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) : 591 591 540 540 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C11 : Servo Problem. E04 : Servo Problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 14 Mar 2022 19:00:00 - 15 Mar 2022 03:00:00 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 : 400.0000 GPU_FINAL_BW : 400 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 16384 GPU_CHAN_NUM : 0:16383:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 41_058 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : IA GPU_BM_INT : 16 GPU_GAINEQ : ON GPU_TPA : TGC tpa GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED -------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-4:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W05 W06 Total=27 # BEAM-4:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W05 W06 Total=27 -------------------------------------------------------------------------- 19:00 : Started set-up. 19:12 : Started command file. /data1/gtac/cmd/41_058/cosmos3.py 20:00 : C11 started working. 22:00 : Started command file. /data1/gtac/cmd/41_058/cosmos7_14march.py 02:40 : Command file stopped. 02:43 : Started scan on 0943-083 for ~5 min. 02:53 : Started scan on 3C286 for ~7 min. 03:00 : Scan stopped and observation session over.