GTAC Observation Log 1. Date : 26/03/2022 2. Observation Sr. No. : 14057 3. Observer : Nissim Kanekar, Balpreet Kaur 4. Observer\'s Email : nkanekar@ncra.tifr.res.in, bkaur@ncra.tifr.res.in 5. Project Name : %latex% A search for HI 21cm absorption from CO-emitting damped Lyman-alpha absorbers at $ z\\\\\\\\approx 2$ 6. Project Code : 41_057 7. Operator(s) : Navnath, Rupsing 8. Command File : /data1/gtac/cmd/41_057/41_057_b1228.py 9. LTA File : /gsbifrdata/26mar/41_057_26mar2022_gsb.lta, /gsbifrdata/26mar/41_057_26mar2022_325.lta, /gwbifrdata1/26mar/41_057_26mar2022_gwb.lta.1 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 : 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 : 16.666666 MHz 24. Final BW : 2.08333325 MHz; Step # 3 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 137 28. LO5 -2 : 168 29. Frequency Parameters (TPA) : 591 591 540 540 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. E04 : : GAB Not getting set. IP hung. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 26 Mar 2022 21:00:00 - 26 Mar 2022 23:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status : 38. Comments (During Observations) : ------------GSB Setting--------- GSB_MODE : Realtime GSB_LTA : 8 GSB_ACQ_BW : 16.666666 GSB_FINAL_BW : 208333325 GSB_EDGE_FRQ : 0 GSB_CHAN_MAX : 512 GSB_CHAN_NUM : 0:511:1 GSB_STOKES : Total_Intensity GSB_CNTRL : ONLINE/TGC GSB_FSTOP : ON GSB_BEAM_1 : OFF GSB_BEAM_2 : OFF GSB_GAINEQ : ON GSB_BB_LO : 137:168 GSB_HOSTS : gsbm1_shivneri undefined : OFF undefined : 306 undefined : RELEASED -------------------------------- -----------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100 GPU_FINAL_BW : 6.25 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 470 470 GPU_DDCLO4 : 0.000000 0.000000 GPU_SB4 : 1 1 GCODE4 : SUBA4 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF 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 : ON GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED -------------------------------- 21:00:00 : Started setup. /data1/gtac/cmd/41_057/41_057_b1228.py 21:13:27 : Started scan on 3C286 for ~ 5.90557 min. 21:24:01 : Started scan on 1142-116 for ~ 6.17401 min. 21:32:04 : Started scan on 1228-113 for ~ 40.2653 min. 21:27:00 : C11 stow not releasing. 22:06:00 : started working. 22:14:16 : Started scan on 1248-199 for ~ 5.5634 min. 22:20:00 : E04 started working. 22:21:57 : Started scan on 1228-113 for ~ 30.87 min. 22:55:17 : Started scan on 1248-199 for ~ 6.71088 min. 23:02 : Stopped scan and observation session is over.