GTAC Observation Log 1. Date : 27/07/2020 2. Observation Sr. No. : 12233 3. Observer : Poonam Chandra, Ayan Biswas, Barnali Das 4. Observer\'s Email : poonam@ncra.tifr.res.in, ayan.scc2@gmail.com, barnali@ncra.tifr.res.in 5. Project Name : Uncovering the intriguing nature of the double O-O binary system Plaskett`s star 6. Project Code : 38_102 7. Operator(s) : Rupsing 8. Command File : /odisk/gtac/cmd/poonam/38_102-27Jul.cmd.txt 9. LTA File : /gsbifrdata/27jul/38_102_27jul2020_gsb_band4.lta.1, /gsbifrdata/27jul/38_102_27jul2020_gsb_band4.lta, /gsbifrdata1/27jul/38_102_27jul2020_gsb_band5.lta.1, /gsbifrdata1/27jul/38_102_27jul2020_gsb_band5.lta, /gwbifrdata1/27jul/38_102_27jul2020_band5_gwb.lta, /gwbifrdata2/27jul/38_102_27jul2020_band4_gwb.lta 10. LogFlag File : /odisk/online1/logflags/38_102B.FLAGS, /odisk/online1/logflags/38_102A.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1409 MHz ,RF2 : 1409 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1460 MHz, ILO2 : 1460MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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 : Full_Stokes 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) : 1409 1409 1460 1460 51 51 30. Integration Time : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :23 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work C01 : Servo problem. S02 : Feed probelm. C02 : ABC time out W06 : ABC time out. C06 : Feed jam. S04 : Low fringe @175 pol. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 27 Jul 2020 10:00:00 - 27 Jul 2020 15:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :25 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF3 : 550 550 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : -1 -1 GCODE3 : 38_102B GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 38_102A GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 128 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF ----------------------------------------------------------------------- Band4:SUBA3:C5, C4, C1, C8, C10, C11, S1, S3, S6, E2, E4, E6, W2, W4, W6 Band5:SUBA$:C6, C3, C2, C9, C12, C13, C14, C0, E3, E5, S2, S4, W1, W3, W5 ----------------------------------------------------------------------- 10:16 : Started scan on 3C147. 10:26 : Stopped scan. 10:35 : Started command file \"/odisk/gtac/cmd/poonam/38_102-27Jul.cmd.txt\" ------------------------------------------------------------------------ 10:35 : W06 started working. ------------------------------------------------------------------------ 11:25 : Stopped command file due to online problem. ------------------------------------------------------------------------ 11:55 : Problem solve. ------------------------------------------------------------------------ 11:57 : Restarted command file. ------------------------------------------------------------------------ 11:58 : C02 started working. ------------------------------------------------------------------------ 14:51 : Stopped command file. ------------------------------------------------------------------------ 14:54 : Started scan on 3C147. 15:03 : Stopped scan and observation closed.