GTAC Observation Log 1. Date : 25/06/2017 2. Observation Sr. No. : 9517 3. Observer : Maryam Arabsalmani, Sambit Roychowdhury, Martin Alexander Zwaan, Nissim Kanekar, Palle Moller, Emeric M LeFloc`h 4. Observer's Email : marabsal@eso.org, sambit.roychowdhury@manchester.ac.uk, mzwaan@eso.org, nkanekar@ncra.tifr.res.in, pmoller@eso.org, emeric.lefloch@cea.fr 5. Project Name : Atomic gas in the host galaxy of GRB 080517 6. Project Code : 32_103 7. Operator(s) : Deepak, Nilesh 8. Command File : /odisk/gtac/cmd/nissim/32_103_25jun.cmd 9. LTA File : /gsbifrdata1/25jun/32_103_25jun2017_gsb.lta, /gwbifrdata1/25jun/32_103_25jun2017_1380.lta 10. LogFlag File : /odisk/online1/logflags/32_103.FLAGS.2 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1296.52 MHz ,RF2 : 1296.52 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1235 MHz, ILO2 : 1235MHz , IVLO1 : 61.52 MHz, IVLO2 : 61.52 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 : 16.666666 MHz 24. Final BW : 4 MHz; Step # 1 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138.48 28. LO5 -2 : 166.52 29. Frequency Parameters (TPA) : 1296.52 1296.52 1235 1235 61.52 61.52 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C05 : Servo problem. C13 : Servo problem. W04 : Intermittent Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Jun 2017 07:00:00 - 25 Jun 2017 14:05:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 06:30 : Started settings. GSB Correlator : Standard GSB Observation Type: Line Line frequency : 1302.77 MHz RF band : 1280 LO (1) : 1235 MHz IF BW : 18 MHz Final BW : 4.16 MHz LO (5) : 138.48 166.52 LO (4) : 61.52 61.52 Step : 1 TPA 1296.52 1296.52 1235 1235 61.52 61.52 512 channels lta 8m Channel 1 at 1304.8532 MHz Channel 512 at 1300.6866 MHz ------------------------------------------- GWB Settings: GAB LO : 1380 MHz Sideband flag : 1 (Flipped) ACQ BW : 200 MHz Channels : 8192 Stokes : 2 GWB LTA : 8 (10 second integrations) The GWB band will cover 1380-1180 MHz. ------------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 : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Total_Intensity GPU_RF4 : 1380 1380 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 32_103 -------------------------------- 06:43:26 : Started scan on 3C147 for ~ 39.46 min. 07:25 : Started command file. /odisk/gtac/cmd/nissim/32_103_25jun.cmd 13:00 : W04 released for observations. 13:38 : Stopped command file. 13:39 : Started scan phase cal for 5 min. 13:47 : Started scan on 3C147 for 13 min. 14:00 : Stopped scan and observation closed.