# # Template Checklist and Worksheet for reduction of VSOP Survey data. # (http://halca.vsop.isas.ac.jp/survey/template_checklist.txt) # # Version 0.4 - J. Lovell 6-October-1999 # - added amplitude correction factor entries # 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} : VS07s {Your family name} : Scott {Your given name} : William {The date you prepared this document (format is day-month-year, e.g 23-04-1999)} : 17-10-2001 {The name of the survey source that was observed} : J0137-24 {The name of the calibration source(s) observed} : J0106-40,J0204+15 {The year the experiment took place (e.g. 1998)} : 2001 {The starting day number of the experiment} : 194 {List the GRTs that observed} : Cd, Hh, Mp, Ho, Se {List the tracking stations that took part} : UZ {Which correlator was used to correlate the data? (Mitaka/Penticton/Socorro)} : Penticton {AIPS Version used (e.g 15OCT98)} : 31DEC00 {Difmap Version used (e.g 2.3c)} : 2.3c {Was vsop_difmap used? (yes/no)} : y {Abstract. Write a brief summary of the data reduction and its outcomes} : PLS radplot of source (J0137-24) showed very little structure, with longer spacing flux approx constant at 1 Jy. No AT light curves. Uncorrected (using only ANTAB values) amplitudes had a flux at 100Mlambda of about 350mJy (Se-Aus baseline), and a flux of about 200mJy at 130Mlambda (Hh-Aus baseline). Both of these flux values are well below the expected value of 1Jy (assuming no variability). However, flux for the calibrators was also very low (between about 50% to 60% of the expected value...based upon the PLS, and assuming no variability). No fringes were found to Ho, Cd (IF2) or Halca. Although the flux on the shortest Halca baselines (about 160Mlambdas) appears like it would only be marginally fringable to Halca (200mJy), based upon the calibrator data this flux in reality was probably much higher. Also, unless the source structure changed a lot, the long spacing flux should have been approx constant (probably closer to the350mJy or higher level). Finally, this experiment was one of three observed around the same time (VS06h, VS07s, VS08c), with only one tracking station (Uz), and all with failed space fringes. I suspect whatever caused the lack of space fringes was not source intrinsic but instead was due to a tracking station problem (???). I suggest re-scheduling this experiment with moderate priority. Priority would have been higher, except it is possible flux on long baselines was low enough that no fringes would have been detected anyways. Antenna gain corection factors were accomplished using scalant in DIFMAP, not CLCOR in AIPS. Hence, the FITS file does not have these corrections applied. #--------------------------------------------------------------------------- # Section 2 : Pre-AIPS Checklist #--------------------------------------------------------------------------- {PI letter retrieved (yes/no)} : y {Data quality reports and plots retrieved? (yes/no)} : y {Pre-launch 5GHz survey data retrieved? (yes/no)} : y {Light-curve data retrieved? (yes/no)} : n # Input files for INDXR, ANTAB and UVFLG {Has a INDXR input file (INDXR.TXT) been created? (yes/no)} : y {Has a ANTAB input file (ANTAB.TXT) been created? (yes/no)} : y {Has a UVFLG input file (UVFLG.TXT) been created? (yes/no)} : n {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)} : yes {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)} : no {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. #--------------------------------------------------------------------------- #------------------------------------------------------------------------- # 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} : DIGICOR=DELCOR=-1 {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : Output file name = VS07S.FITLD #--------------------------------------------------------- #--------------------------------------------------------- {Task} : MSORT {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : Input file name = VS07S.FITLD, Output file name = VS07S.UVSRT #--------------------------------------------------------- #--------------------------------------------------------- {Task} : FIXWT {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : Not done. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : INDXR {ADVERBs} : CPARM(1)=3 CPARM(2)=60 CPARM(3)=0.25 {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : Created NX(1) #--------------------------------------------------------- #--------------------------------------------------------- {Task} : ANTAB {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : Used a nominal DPFU for Ho, Mp, and Halca. For Halca used a Tsys of 88K, 92K. For Mp used a nominal Tsys of 34K. For Se used a nominal Tsys of 88.8K. For all other GRTs (Cd, Hh, Ho) had non-nominal Tsys values. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : APCAL {ADVERBs} : {Input CL} : {Input SN} : 1 {Output SN} : {Output CL} : {Comments} : Input: Ty(1) + GC(1) #--------------------------------------------------------- #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : OPCODE = CALP INTERPOL = 'AMBG' REFANT 5 (Se) {Input CL} : 1 {Input SN} : 1 {Output SN} : {Output CL} : 2 {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : TBOUT {ADVERBs} : INEXT = 'AN' {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : TBIN {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : Changed MNTSTA entries in the AN table. Changed Halca from 3 to 2, and changed Hh and Ho to 0. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : TBIN {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : 2 {Output CL} : {Comments} : Read in DQA1 delay and rate solutions. Couldn't get TAFLG to work properly, so set the delays/rates to zero for Ho, VSOP, and Ced (IF2 only). These antennas did not have good solutions in the DQA1 report, despite often having pfring > 0.95. Simply SNEDTing the bad solutions does not work, since then CLCAL throws out the data. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : OPCODE = CALP INTERPOL = 'AMBG' REFANT 5 (Se) {Input CL} : 2 {Input SN} : 2 {Output SN} : {Output CL} : 3 {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : UVFLG {ADVERBs} : OPCODE = REAS REASON 'NO PRC/LOW DVAL' {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : Needed to unflag the NO PRC/LOW DVAL data... as per the piletter most of this data was ok. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : FRING {ADVERBs} : DOCALIB 1 GAINUSE 3 TIMER 0 SEARCH 4,2,1 ANTENNAS -3 SOLINT 10 REFANT 5 (Se) APARM(1)=2 APARM(7)=3 (SNR=3) DPARM(1)=3 (include baseline stacking) DPARM(2)=2000 (2000 ns delay window) DPARM(3)=100 (100mHz rate window) DPARM(4)=0.5 DPARM(5)=0 DPARM(6)=1 {Input CL} : 3 {Input SN} : {Output SN} : 3 {Output CL} : {Comments} : Look for Halca solutions with a large window and long solint. Exclude Ho for now (no Ho fringes in the DQA1 report). Lousy solutions. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : FRING {ADVERBs} : DOCALIB 1 GAINUSE 3 TIMER 0 SEARCH 4,2,1 ANTENNAS -3 SOLINT 2 REFANT 5 (Se) APARM(1)=2 APARM(7)=3 (SNR=3) DPARM(1)=3 (include baseline stacking) DPARM(2)=2000 (2000 ns delay window) DPARM(3)=100 (100mHz rate window) DPARM(4)=0.5 DPARM(5)=0 DPARM(6)=1 {Input CL} : 3 {Input SN} : {Output SN} : 3 {Output CL} : {Comments} : Try again with small solint. Still no good solutions. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : FRING {ADVERBs} : DOCALIB 1 GAINUSE 3 TIMER 0 ANTENNAS 5,6 SOLINT 2 REFANT 5 APARM(1)=2 APARM(7)=3 (SNR=3) DPARM(1)=3 (include baseline stacking) DPARM(2)=2000 (2000 ns delay window) DPARM(3)=100 (100mHz rate window) DPARM(4)=0.5 DPARM(5)=1 (Don't do LS solution) DPARM(6)=1 {Input CL} : 3 {Input SN} : {Output SN} : 3 {Output CL} : {Comments} : Just try for Halca solutions with the refant and no LS solutions....no luck. Give up. Suspect something was wrong with Halca for all three experiments, VS06h, VS07s, and VS08c. Will just use DQA1 file to generate a ground only image. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : TACOP {ADVERBs} : {Input CL} : 3 {Input SN} : {Output SN} : {Output CL} : 4 {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : CLCOR {ADVERBs} : OPCODE 'GAIN' ANTENNAS 0 CLCORPRM 1.22,0 {Input CL} : 4 {Input SN} : {Output SN} : {Output CL} : 4 {Comments} : Based upon calibrator J0106-40 (which had approximately constant flux from AT light curves), flux was low by about 1.5. Multiply all antennas by root of this factor. Couldn't get any good crossing points with fringes to determine relative gain corrections. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : UVFLG {ADVERBs} : OPCODE 'FLAG' REASON 'NO FRINGES' ANTENNAS 3,6 {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : SPLIT {ADVERBs} : SOURCES 'J0137-24' DOCALIB 1, GAINUSE 4 {Input CL} : 4 {Input SN} : {Output SN} : {Output CL} : {Comments} : Input file: VS07S.UVSRT, Output file: J0137-24.FITS #--------------------------------------------------------- #--------------------------------------------------------- {Task} : FITTP {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : Input file: J0137-24.FITS, Output file: J0137-24.FITS, #--------------------------------------------------------- #------------------------------------------------------------------------- # Section 6 : Antenna-based amplitude corrections #------------------------------------------------------------------------- # Corrections applied with CLCOR in AIPS to correct for antenna-based amplitude # errors. # Separate antenna names and correction factors by commas or spaces. # e.g # # {Antenna name list} : HALCA, HO, HH, MP, KA # {Amplitude correction factors} : 1.0, 1.6, 1.3, 1.0, 1.0 # {Antenna name list} : Cd, Hh, Mp, Ho, Se {Amplitude correction factors} : 1.22, 1.22, 1.22, 1.22, 1.22 #------------------------------------------------------------------------- # Section 7 : Difmap data reduction notes #------------------------------------------------------------------------- {Phase Selfcal applied? (yes/no)} : n {Global Amplitude Selfcal applied? (yes/no)} : n {Amplitude Selfcal applied on non-global timescales? (yes/no)} : n {Modelfit made and saved using the vs_final_mod macro? (yes/no)} : n {Image made and saved using the vs_final_img macro? (yes/no)} : n {Comments on Difmap processing. Include the global amplitude offsets that were applied if gscal was used} : Didn't make an image. Don't have any Halca data, and low spacing data (Cd-Mp) looked very weird. Something is seriously wrong with this data. # If GSCAL was used, report amplitude correction factors here. If GSCAL # was used more than once, report the CUMULATIVE factor here (e.g if gscal # reported a gain factor of 1.11 for HALCA the first time and 0.95 the # second time, the overall gain correction is 1.11 * 0.95 = 1.05. # Separate antenna names and correction factors by commas or spaces. # e.g # # {Antenna name list} : HALCA, HO, HH, MP, KA # {Amplitude correction factors} : 1.0, 1.6, 1.3, 1.0, 1.0 # {Antenna name list} : {Amplitude correction factors} : #------------------------------------------------------------------------- # Do not delete or alter anything past this line {VSOP Survey Checklist and Worksheet version} : 0.4 #-------------------------------------------------------------------------