# # Template Checklist and Worksheet for reduction of VSOP Survey data. # (http://halca.vsop.isas.ac.jp/survey/template_checklist.txt) # # Version 0.3 - J. Lovell 14-Apr-1999 # # NOTE: Copy this file to your data reduction outputs directory (e.g # /something/vs05a_jones) and name it "checklist.txt" # # Comments are given on lines beginning with a # and questions are # enclosed in {}'s. # Please enter responses after the colons. # Multiple-line responses are OK. # Yes/No questions may be answered with "yes", "no", "Y", "N", "y" or "n" # An example of a completed Checklist is given in # http://halca.vsop.isas.ac.jp/survey/checklist_eg.txt # # #--------------------------------------------------------------------------- # Section 1 : General Information #--------------------------------------------------------------------------- {Experiment code} : VS03p {Your family name} : Shen {Your given name} : Zhi-Qiang {The date you prepared this document (format is day-month-year, e.g 23-04-1999)} : 12-11-1999 {The name of the survey source that was observed} : J0607-08 {The name of the calibration source(s) observed} : 0528+134, 0808+019 {The year the experiment took place (e.g. 1998)} : 1998 {The starting day number of the experiment} : 87 {List the GRTs that observed} : HartRAO, Noto {List the tracking stations that took part} : GZ {Which correlator was used to correlate the data? (Mitaka/Penticton/Socorro)} : Penticton {AIPS Version used (e.g 15OCT98)} : 15APR99 {Difmap Version used (e.g 2.3c)} : 2.3c {Was vsop_difmap used? (yes/no)} : yes {Abstract. Write a brief summary of the data reduction and its outcomes} : This is a 2 GRTs VSOP survey experiment. Fringes were clearly detected on all three (1 ground-ground and 2 ground-space) baselines. Since only 3 antennas (including Halca) available, imaging was done without any amplitude self-cal. Model fitting was tried to fit the central region only with a circular Gaussian component while keeping 24 clean components of remaining structure. For both calibrators 0528+134 and 0808+019, strong fringes were seen on the ground baseline (HartRAO - Noto) of 6,000km with correlated flux densities of 0.95Jy and 0.40Jy, respectively. The data after 21:24:01 was useless because both u and v were wrongly set zero for ground baseline. Fringes still can be seen for both J0607-08 and 0808+019. The reason is unknown. #--------------------------------------------------------------------------- # Section 2 : Pre-AIPS Checklist #--------------------------------------------------------------------------- {PI letter retrieved (yes/no)} : yes {Data quality reports and plots retrieved? (yes/no)} : yes {Pre-launch 5GHz survey data retrieved? (yes/no)} : yes {Light-curve data retrieved? (yes/no)} : yes # Input files for INDXR, ANTAB and UVFLG {Has a INDXR input file (INDXR.TXT) been created? (yes/no)} : no {Has a ANTAB input file (ANTAB.TXT) been created? (yes/no)} : yes {Has a UVFLG input file (UVFLG.TXT) been created? (yes/no)} : no {Any comments on Pre-AIPS file preparation?} : #--------------------------------------------------------------------------- # Section 3 : AIPS Output File Checklist # # Names of expected output file names are contained in square brackets. #--------------------------------------------------------------------------- {PRTAN [PRTAN.LIS] (yes/no)} : yes {LISTR (optyp = 'SCAN') [LISTR.LIS] (yes/no)} : yes {DTSUM (aparm = 0) [DTSUM_0.LIS] (yes/no)} : yes {DTSUM (aparm = 1) [DTSUM_1.LIS] (yes/no)} : yes {UVPLT (u vs v) [UVPLT_UV.PS] (yes/no)} : yes {UVPLT ((u,v) distance vs time) [UVPLT_UVD.PS] (yes/no)} : yes {UVPLT ((u,v) position angle vs time). [UVPLT_UVPA.PS] (yes/no)} : yes {VPLOT antenna weights vs time (after adjustment) [WEIGHTS.PS] (yes/no)} : no {ACCOR SNPLT (amplitude), IF 1 [SN_ACCOR_1.PS] (yes/no)} : no {IF 2 [SN_ACCOR_2.PS] (yes/no)} : no {APCAL SNPLT (amplitude), IF 1 [SN_APCAL_1.PS] (yes/no)} : yes {IF 2 [SN_APCAL_2.PS] (yes/no)} : yes # FRING SNPLT (delay, rate, SNR), as many as necessary to document the # clear discovery of fringes at all antennas, numbered with "nn" for # both IFs. Do NOT include the final SN table as it is plotted later. # # Format is SN_FRINGnn_DEL_i.PS, SN_FRINGnn_RAT_i.PS, # SN_FRINGnn_SNR_i.PS for delay, rate and SNR plots respectively, # where "i" is the IF number (1 or 2). {Number of times preliminary FRING solutions were plotted (i.e maximum value of nn)} : 0 {Post-FRING CALIB SNPLT, Phase: IF 1 [SN_CALIB_PHA_1] (yes/no)} : yes {IF 2 [SN_CALIB_PHA_2] (yes/no)} : yes {Delay: IF 1 [SN_CALIB_DEL_1] (yes/no)} : yes {IF 2 [SN_CALIB_DEL_2] (yes/no)} : yes {Rate: IF 1 [SN_CALIB_RAT_1] (yes/no)} : yes {IF 2 [SN_CALIB_RAT_2] (yes/no)} : yes {SNR: IF 1 [SN_CALIB_SNR_1] (yes/no)} : yes {IF 2 [SN_CALIB_SNR_2] (yes/no)} : yes {Post-calibration VPLOT (amp and phase, with channel averaging) IF 1 [VPLOT_AP_1.PS] (yes/no)} : yes {IF 2 [VPLOT_AP_1.PS] (yes/no)} : yes {Post-calibration POSSM (amplitude and phase, at least one 5 to 10 min integration spectrum per tracking pass, indexed with nn = 01, 02, 03, ...), IF 1 [POSSMnn_AP_1.PS] (yes/no)} : yes {IF 2 [POSSMnn_AP_2.PS] (yes/no)} : yes {Output TASAV FITS file (containing all 'multisource' cal tables) [VSxxx__TASAV.FITS] (yes/no)} : yes {Calibrated and spectrally averaged FITS data files (one for each source), [__AIPS.FITS] (yes/no)} : yes #--------------------------------------------------------------------------- # Section 4 : Supplementary files # # Were any files created, other than those listed, to document the data # reduction? If so, please list them below using as many (File, Description) # groups as required. #--------------------------------------------------------------------------- #--------------------------------------------------------- {File} : {Description} : #--------------------------------------------------------- #--------------------------------------------------------------------------- # Section 5 : AIPS data-reduction notes # # The format is as follows: # # Task : the name of the task that is run or other operation performed # ADVERBs : a list of the relevant non-default adverbs # Input CL : the input calibration table used (if any) in running the task # Input SN : the SN table that was used (if any) # Output SN : the SN table produced (if any) # Output CL : the CL table produced or modified (if any) # Comments: any comments on the results of the operation # # Use as many of the (Task, ADVERBs, Comments, Input CL, Input SN, # Output SN, Output CL) groups as required. #--------------------------------------------------------------------------- #--------------------------------------------------------- {Task} : FITLD {ADVERBs} : douvcomp=1 dotable=1 {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : load the uv FITS data #--------------------------------------------------------- {Task} : MSORT {ADVERBs} : sort='TB' {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : sort the data to 'TB' order #--------------------------------------------------------- {Task} : INDXR {ADVERBs} : cparm(3)=0.25 {Input CL} : {Input SN} : {Output SN} : {Output CL} : 1 {Comments} : index uv data with 0.25 min CL entry interval #--------------------------------------------------------- {Task} : TACOP {ADVERBs} : {Input CL} : 1 {Input SN} : {Output SN} : {Output CL} : 2 {Comments} : protect CL1 #--------------------------------------------------------- {Task} : ANTAB {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : determine the Tsys and gain curve (Tsys=92K and 96K for IF1 and IF2 of Halca, respectively) #--------------------------------------------------------- {Task} : APCAL {ADVERBs} : opcode=' ' {Input CL} : {Input SN} : {Output SN} : 1 {Output CL} : {Comments} : generate an amplitude calibration solution table #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : opcode='CALI';smotype='ampl';refant=0 {Input CL} : 2 {Input SN} : 1 {Output SN} : {Output CL} : 3 {Comments} : apply amplitude calibration solution #--------------------------------------------------------- {Task} : KRING {ADVERBs} : docalib=1;refant=3;solint=4;flagv=1 soltype='NOLS';solmode='SBD' bparm=0;cparm=0,0,1,0 antwt=30,1,1 prtlev=2 {Input CL} : 3 {Input SN} : {Output SN} : 3 {Output CL} : {Comments} : run FFT (NOLS) KRING with an SNR cutoff=5 to check the fringes ranges #--------------------------------------------------------- {Task} : TACOP {ADVERBs} : {Input CL} : 3 {Input SN} : {Output SN} : {Output CL} : 4 {Comments} : protect CL3 from further calibration #--------------------------------------------------------- {Task} : CLCOR {ADVERBs} : opcode='SBDL';timer=0 antenna=1,0;clcorprm=1111,1111,0 (antenna=2,0;clcorprm=-1166,-1166,0) {Input CL} : 4 {Input SN} : {Output SN} : {Output CL} : 4 {Comments} : apply delay offset from KRING solutions (which are consistent with the DQA1 reports) to each IF residual delay for antenna 1 (Halca) and 2 (HARTRAO). #--------------------------------------------------------- {Task} : FRING {ADVERBs} : docalib=1;flagv=1;refant=3;solint=4 search=2,1; aparm=2,0,0,0,0,1,3,0,1,0 dparm=1,200,200,0 antwt=30,1,1 {Input CL} : 4 {Input SN} : {Output SN} : 4 {Output CL} : {Comments} : fringe fit (FFT+LLS) in narrow searching windows with an SNR cutoff=3 #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : opcode='CALP';smotype='VLBI';interpol='ambg';refant=3 sour=cals='0528+134' (sour=cals='J0607-08'; sour=cals='0808+019') {Input CL} : 4 {Input SN} : 4 {Output SN} : {Output CL} : 5 {Comments} : apply FRING solutions #--------------------------------------------------------- {Task} : TACOP {ADVERBs} : {Input CL} : 5 {Input SN} : {Output SN} : {Output CL} : 6 {Comments} : protect CL5 #--------------------------------------------------------- {Task} : CLCOR {ADVERBs} : antenna=0;opcode='GAIN';clcorprm=0.91,0 {Input CL} : 6 {Input SN} : {Output SN} : {Output CL} : 6 {Comments} : Penticton gain correction #--------------------------------------------------------- {Task} : TASAV {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : copy all extension tables to a dummy file #--------------------------------------------------------- {Task} : SPLIT {ADVERBs} : docalib=1;douvcomp=1;aparm=2,0 bchan=20;echan=230 {Input CL} : 6 {Input SN} : {Output SN} : {Output CL} : {Comments} : make calibrated single-source data files: J0607-08.SPLIT; 0528+134.SPLIT and 0808+019.SPLIT (some edge channels have been thrown away) #--------------------------------------------------------- {Task} : FITTP {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : export each single-source file in FITS format to disk file for further imaging analysis #--------------------------------------------------------- #--------------------------------------------------------------------------- # Section 6 : Difmap data reduction notes #--------------------------------------------------------------------------- {Phase Selfcal applied? (yes/no)} : yes {Global Amplitude Selfcal applied? (yes/no)} : no {Amplitude Selfcal applied on non-global timescales? (yes/no)} : no {Modelfit made and saved using the vs_final_mod macro? (yes/no)} : yes {Image made and saved using the vs_final_img macro? (yes/no)} : yes {Comments on Difmap processing. Include the global amplitude offsets that were applied if gscal was used} : average data over 30 sec (uvaver 30,true) raise the weight of HALCA (selfant VSOP_SC,false,50) keep non-closing data during phase self-cal (selfflag false,3,4) clean and phase self-cal with uniform weighting (uvw 2,-1 ... etc) change to natural weighting to clean more flux (uvw 0,-1 ... etc) (*NO* amplitude self-cal with only 3 antennas available) switch back to obtain a uniform weighting clean image: peak=0.233 Jy/beam, RMS=5.0 mJy/beam; beam=1.09 mas x 0.301 mas @ 12.8 deg A circular Gaussian component (0.23Jy and 0.15mas) was tried to fit the central compact region while keeping 24 clean components of remaining structure. For both calibrators 0528+134 and 0808+019, strong fringes were seen on the ground baseline (HartRAO - Noto) of 6,000km with correlated flux densities of 0.95Jy and 0.40Jy, respectively. #--------------------------------------------------------------------------- # Do not delete or alter anything past this line {VSOP Survey Checklist and Worksheet version} : 0.3 #---------------------------------------------------------------------------