Hi Eric,<br><br>The file is large, about 32 GB.<br><br>I below are my input for ATLOD task, LISTR task output, AIPS_MSGSRV_7 output and imheader output. The visibilities in the imheader output does not match with the total number of the visibilities in the LISTR task output. To be more direct, the visibility of the first scan is the one which correspond with the visibilities in the imheader output. Threre was an error while loading the data. Which was ZERROR: ON FILE DA01:UVD002001.002;<br>
LOCALH> ATLOD1: ZERROR: IN ZCMPR2 ERRNO = 22 (Invalid argument)<br>
LOCALH> ATLOD1: ATCLOS: ERROR COMPRESSING THE AIPS UV DISK FILE.<br><br><br>____________________________________________________________________________________<br><br>inp<br>AIPS 1: ATLOD: Task which reads RPFITS format uv data into AIPS.<br>
AIPS 1: Adverbs Values Comments<br>AIPS 1: ----------------------------------------------------------------<br>AIPS 1: INTAPE 1 Tape drive number (0 -> 1)<br>AIPS 1: No REMOTE capability<br>
AIPS 1: NSKIP 0 Number of tape files to<br>AIPS 1: skip (0 -> 0)<br>AIPS 1: NFILES 0 Number of tape files to<br>AIPS 1: load (0 -> 1)<br>
AIPS 1: BCOUNT 1 First scan to read (0 -> 1)<br>AIPS 1: NCOUNT 0 No. scans to read (0 -> all)<br>AIPS 1: DATAIN 'H:V215B.RPF' Disk file name<br>
AIPS 1: OUTNAME 'V215B' Output uv file name (name)<br>AIPS 1: blank -> source name<br>AIPS 1: OUTCLASS 'UVDATA' Output uv file name (class)<br>
AIPS 1: blank -> UVDATA<br>AIPS 1: OUTSEQ 0 Output uv sequence number<br>AIPS 1: 0 -> highest unique AND a<br>AIPS 1: new file for EACH pass<br>
AIPS 1: OUTDISK 1 Output disk drive number<br>AIPS 1: OPTYPE ' ' 'LOAD' load data (default)<br>AIPS 1: 'LIST' scan summary<br>
AIPS 1: 'SUMM' file summary<br>AIPS 1: 'SYSC' dump syscal info<br>AIPS 1: see CPARM(9)<br>AIPS 1: SOURCES *all ' ' Source selection list<br>
AIPS 1: TIMERANG *all 0 Time range selection<br>AIPS 1: FREQSEL *all 0 Frequencies to select (MHz)<br>AIPS 1: IFSEL *all 0 IFs to select<br>AIPS 1: CHANSEL *all 0 Channel selection array:<br>
AIPS 1: (1,n) start channel group n<br>AIPS 1: (2,n) end channel group n<br>AIPS 1: (3,n) incr. channel group n<br>
AIPS 1: IFMAP 0 True to map on-line IF chain<br>AIPS 1: to AIPS IF axis.<br>AIPS 1: NIF 0 Length of IF axis,<br>AIPS 1: 0 => ATLOD decides.<br>
AIPS 1: DOUVCOMP -1 Use compressed data?<br>AIPS 1: ** press RETURN for more, enter Q or next line to quit print **<br>#<br>AIPS 1: APARM -1 0 1) If > 0, convert to Stokes<br>
AIPS 1: 1 0 if < 0, kludge RR,LL,RL,LR<br>AIPS 1: 0 0 if = 0, don't change the<br>AIPS 1: 1 *rest 0 polarizations<br>
AIPS 1: 2) If true, keep flagged data<br>AIPS 1: 3) If true, retain<br>AIPS 1: autocorrelations<br>AIPS 1: 4) Shadowing diameter (m)<br>
AIPS 1: 5) max NX time gap (min)<br>AIPS 1: 0 -> 10 min<br>AIPS 1: 6) max NX scan length (min)<br>AIPS 1: 0 -> 60 min<br>
AIPS 1: 7) CL entry interval (min)<br>AIPS 1: 0 -> 5 min<br>AIPS 1: 8) Number of integrations<br>AIPS 1: over which to average Tsys<br>
AIPS 1: 0 -> 1 See HELP/EXPLAIN<br>AIPS 1: 9) Number of integrations<br>AIPS 1: over which to average XY<br>
AIPS 1: phase diff if APARM(1) = 1<br>AIPS 1: 0 -> 1 See HELP/EXPLAIN<br>AIPS 1: 10) If non-zero drop data on<br>
AIPS 1: quality of XY phase diff.<br>AIPS 1: See HELP/EXPLAIN<br>AIPS 1: BPARM *all 0 Baselines to be rejected,<br>AIPS 1: (see HELP)<br>
AIPS 1: CPARM *all 0 Further control parameters:<br>AIPS 1: 1) System cal. info. print<br>AIPS 1: level. See HELP/EXPLAIN<br>
AIPS 1: 2) If true negate system XY<br>
AIPS 1: cal phase difference<br>AIPS 1: 3) If true, negate phases<br>AIPS 1: 4) If true, use XYPHASE array<br>AIPS 1: instead of on-line values<br>
AIPS 1: 5) If true, apply XY phase to<br>AIPS 1: the Y gain<br>AIPS 1: 6) If 1, report antennas for<br>AIPS 1: which sampler stats bad<br>
AIPS 1: ** press RETURN for more, enter Q or next line to quit print **<br>#<br>AIPS 1: If 2, drop baselines with<br>AIPS 1: bad sampler statistics<br>
AIPS 1: If 3, do 1 and 2<br>AIPS 1: If 4, correct data for<br>AIPS 1: bad statistics.<br>AIPS 1: 7) Sampler tolerance<br>
AIPS 1: 8) If true, DATAIN will be<br>AIPS 1: read as lower case. This<br>AIPS 1: is intended for reading<br>
AIPS 1: from VAX disks mounted<br>AIPS 1: under unix via multinet.<br>AIPS 1: 9) If OPTYPE='SYSC' then the<br>
AIPS 1: 3 text files contain:<br>AIPS 1: 1 => XY phase, Tx & Ty<br>AIPS 1: 2 => X sampler stats<br>
AIPS 1: 3 => Y sampler stats<br>AIPS 1: 0 => 1<br>AIPS 1: 10) If 1, Tsys from IF 1 is<br>AIPS 1: applied to IF 2, if<br>
AIPS 1: APARM(8) is > 0<br>AIPS 1: XYPHASE *all 0 Enter XY phase difference for<br>AIPS 1: each antenna & FQID (degrees)<br>
AIPS 1: DPARM *all 0 1) If > 0, then the scan<br>AIPS 1: based source number of all<br>AIPS 1: sources is set to 1.<br>AIPS 1: 2) If > 0, the spectra are<br>
AIPS 1: 3-point Hanning smoothed.<br>AIPS 1: 3) If > 0 -> set weights to<br>AIPS 1: D(3) instead of integration<br>
AIPS 1: time in units of 15s<br>>go<br>AIPS 1: Resumes<br>>pcat<br>AIPS 1: Catalog on disk 1<br>AIPS 1: Cat Usid Mapname Class Seq Pt Last access Stat<br>AIPS 1: 1 2 0637-752 .UVDATA. 1 UV 17-JUL-2012 15:39:56<br>
AIPS 1: 2 2 V215B .UVDATA. 1 UV 18-JUL-2012 07:59:52<br>>getname 2; imh<br>AIPS 1: Got(1) disk= 1 user= 2 type=UV V215B.UVDATA.1<br>AIPS 1: Image=0637-752 (UV) Filename=V215B .UVDATA. 1<br>
AIPS 1: Telescope=ATLBA Receiver=<br>AIPS 1: Observer= User #= 2<br>AIPS 1: Observ. date=20-MAR-2007 Map date=18-JUL-2012<br>AIPS 1: # visibilities 4500 Sort order TB<br>AIPS 1: Rand axes: UU-L VV-L WW-L BASELINE TIME1 SOURCE FREQSEL<br>
AIPS 1: ----------------------------------------------------------------<br>AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat<br>AIPS 1: COMPLEX 3 1.0000000E+00 1.00 1.0000000E+00 0.00<br>
AIPS 1: STOKES 2 -1.0000000E+00 1.00 -1.0000000E+00 0.00<br>AIPS 1: FREQ 4097 6.6670000E+09 0.00 9.7656250E+02 0.00<br>AIPS 1: IF 1 1.0000000E+00 1.00 1.0000000E+00 0.00<br>
AIPS 1: RA 1 06 35 46.508 1.00 3600.000 0.00<br>AIPS 1: DEC 1 -75 16 16.816 1.00 3600.000 0.00<br>AIPS 1: ----------------------------------------------------------------<br>
AIPS 1: Coordinate equinox 2000.00<br>AIPS 1: Maximum version number of extension files of type HI is 1<br>AIPS 1: Maximum version number of extension files of type FQ is 1<br>AIPS 1: Maximum version number of extension files of type SU is 1<br>
AIPS 1: Maximum version number of extension files of type AN is 1<br>AIPS 1: Maximum version number of extension files of type NX is 1<br>AIPS 1: Maximum version number of extension files of type CL is 1<br>><br>
LOCALH> ATLOD1: Task ATLOD (release of 31DEC12) begins<br>LOCALH> ATLOD1: Dropping all flagged visibilities.<br>LOCALH> ATLOD1: Retaining autocorrelations.<br>LOCALH> ATLOD1: Vis weights set to integration time in units of 15 sec<br>
LOCALH> ATLOD1: Averaging all pulsar bins<br>LOCALH> ATLOD1:<br>LOCALH> ATLOD1: Processing file: 1<br>LOCALH> ATLOD1: Input polarizations: RR,LL<br>LOCALH> ATLOD1: Kludging polarizations to be circular<br>
LOCALH> ATLOD1:<br>LOCALH> ATLOD1: Create V215B .UVDATA. 1 (UV) on disk 1 cno 2<br>LOCALH> ATLOD1: Recomputing UVWs for pre-20/02/1998 LBA data<br>LOCALH> ATLOD1:<br>LOCALH> ATLOD1: File: 1, Scan: 1<br>
LOCALH> ATLOD1: Date: 2007-03-20 UT start: 0 13:00:01<br>LOCALH> ATLOD1:<br>LOCALH> ATLOD1: Visibilities accepted/rejected for each source/frequency:<br>LOCALH> ATLOD1: Sideband +1<br>LOCALH> ATLOD1: AIPS IF axis 1<br>
LOCALH> ATLOD1: Source/Freq(GHz) 6.667000<br>LOCALH> ATLOD1: 0637-752 4500/0<br>LOCALH> ATLOD1: 1733-3722 17250/0<br>LOCALH> ATLOD1: G351.78-0.54 90000/0<br>LOCALH> ATLOD1: Category summaries of visibilities for this scan:<br>
LOCALH> ATLOD1: Recomputing UVWs for pre-20/02/1998 LBA data<br>LOCALH> ATLOD1:<br>LOCALH> ATLOD1: File: 1, Scan: 2<br>LOCALH> ATLOD1: Date: 2007-03-20 UT start: 0 17:08:21<br>LOCALH> ATLOD1:<br>LOCALH> ATLOD1: Visibilities accepted/rejected for each source/frequency:<br>
LOCALH> ATLOD1: Sideband +1<br>LOCALH> ATLOD1: AIPS IF axis 1<br>LOCALH> ATLOD1: Source/Freq(GHz) 6.667000<br>LOCALH> ATLOD1: 0637-752 0/0<br>LOCALH> ATLOD1: 1733-3722 61215/0<br>
LOCALH> ATLOD1: G351.78-0.54 266910/0<br>LOCALH> ATLOD1: 1921-293 44519/0<br>LOCALH> ATLOD1: Category summaries of visibilities for this scan:<br>LOCALH> ATLOD1:<br>LOCALH> ATLOD1: Finished reading file number 1.<br>
LOCALH> ATLOD1: ZERROR: ON FILE DA01:UVD002001.002;<br>LOCALH> ATLOD1: ZERROR: IN ZCMPR2 ERRNO = 22 (Invalid argument)<br>LOCALH> ATLOD1: ATCLOS: ERROR COMPRESSING THE AIPS UV DISK FILE.<br>LOCALH> ATLOD1: Some of the AIPS files may have been left open.<br>
LOCALH> ATLOD1: Appears to have ended successfully<br>LOCALH> ATLOD1: localhos 31DEC12 TST: Cpu= 260.4 Real= 738 IO= 45440<br><br><br>AIPS 1: Got(1) disk= 1 user= 2 type=UV V215B.UVDATA.1<br> localhos LISTR(31DEC12) 2 18-JUL-2012 08:22:23 Page 1<br>
File = V215B .UVDATA. 1 Vol = 1 Userid = 2<br>Freq = 6.667000000 GHz Ncor = 2 No. vis = 4500<br>Scan summary listing<br> <br>Scan Source Qual Calcode Sub Timerange FrqID START VIS END VIS<br>
1 0637-752 : 0001 1 0/13:00:01 - 0/13:09:59 1 1 4500<br> 2 1733-3722 : 0001 1 0/13:10:01 - 0/13:14:59 1 4501 6750<br> 3 G351.78-0.54 : 0001 1 0/13:15:01 - 0/13:34:59 1 6751 15750<br>
4 1733-3722 : 0001 1 0/13:35:01 - 0/13:38:29 1 15751 17325<br> 5 G351.78-0.54 : 0001 1 0/13:38:31 - 0/13:58:29 1 17326 26325<br> 6 1733-3722 : 0001 1 0/13:58:31 - 0/14:01:59 1 26326 27900<br>
7 G351.78-0.54 : 0001 1 0/14:02:01 - 0/14:21:59 1 27901 36900<br> 8 1733-3722 : 0001 1 0/14:22:01 - 0/14:25:29 1 36901 38475<br> 9 G351.78-0.54 : 0001 1 0/14:25:31 - 0/14:45:29 1 38476 47475<br>
10 1733-3722 : 0001 1 0/14:45:31 - 0/14:48:59 1 47476 49050<br> 11 G351.78-0.54 : 0001 1 0/14:49:01 - 0/15:08:59 1 49051 58050<br> 12 1733-3722 : 0001 1 0/15:09:01 - 0/15:12:29 1 58051 59625<br>
13 G351.78-0.54 : 0001 1 0/15:12:31 - 0/15:32:29 1 59626 68625<br> 14 1733-3722 : 0001 1 0/15:32:31 - 0/15:35:59 1 68626 70200<br> 15 G351.78-0.54 : 0001 1 0/15:36:01 - 0/15:55:59 1 70201 79200<br>
16 1733-3722 : 0001 1 0/15:56:01 - 0/15:59:29 1 79201 80775<br> 17 G351.78-0.54 : 0001 1 0/15:59:31 - 0/16:19:29 1 80776 89775<br> 18 1733-3722 : 0001 1 0/16:19:31 - 0/16:22:59 1 89776 91350<br>
19 G351.78-0.54 : 0001 1 0/16:23:01 - 0/16:42:59 1 91351 100350<br> 20 1733-3722 : 0001 1 0/16:43:01 - 0/16:46:29 1 100351 101925<br> 21 G351.78-0.54 : 0001 1 0/16:46:31 - 0/17:06:29 1 101926 110925<br>
22 1733-3722 : 0001 1 0/17:06:31 - 0/17:08:19 1 110926 111750<br> 23 1733-3722 : 0001 1 0/17:08:21 - 0/17:09:59 1 111751 112800<br> 24 1921-293 : 0001 1 0/17:10:01 - 0/17:19:59 1 112801 119100<br>
25 1733-3722 : 0001 1 0/17:20:01 - 0/17:24:29 1 119101 121935<br> 26 G351.78-0.54 : 0001 1 0/17:24:31 - 0/17:44:29 1 121936 134535<br> 27 1733-3722 : 0001 1 0/17:44:31 - 0/17:47:59 1 134536 136740<br>
28 G351.78-0.54 : 0001 1 0/17:48:01 - 0/18:07:59 1 136741 149340<br> 29 1733-3722 : 0001 1 0/18:08:01 - 0/18:11:29 1 149341 151545<br> 30 G351.78-0.54 : 0001 1 0/18:11:31 - 0/18:31:29 1 151546 164145<br>
31 1733-3722 : 0001 1 0/18:31:31 - 0/18:34:59 1 164146 166350<br> 32 G351.78-0.54 : 0001 1 0/18:35:01 - 0/18:54:59 1 166351 178950<br> 33 1733-3722 : 0001 1 0/18:55:01 - 0/18:58:29 1 178951 181155<br>
Type Q to stop, just hit RETURN to continue <br><br> localhos LISTR(31DEC12) 2 18-JUL-2012 08:22:30 Page 2<br>File = V215B .UVDATA. 1 Vol = 1 Userid = 2<br>
Scan Source Qual Calcode Sub Timerange FrqID START VIS END VIS<br> 34 1921-293 : 0001 1 0/18:58:31 - 0/19:08:29 1 181156 187455<br> 35 1733-3722 : 0001 1 0/19:08:31 - 0/19:12:59 1 187456 190290<br>
36 G351.78-0.54 : 0001 1 0/19:13:01 - 0/19:32:59 1 190291 202890<br> 37 1733-3722 : 0001 1 0/19:33:01 - 0/19:36:29 1 202891 205095<br> 38 G351.78-0.54 : 0001 1 0/19:36:31 - 0/19:56:29 1 205096 217695<br>
39 1733-3722 : 0001 1 0/19:56:31 - 0/19:59:59 1 217696 219900<br> 40 G351.78-0.54 : 0001 1 0/20:00:01 - 0/20:19:59 1 219901 232500<br> 41 1733-3722 : 0001 1 0/20:20:01 - 0/20:23:29 1 232501 234705<br>
42 G351.78-0.54 : 0001 1 0/20:23:31 - 0/20:43:29 1 234706 247305<br> 43 1733-3722 : 0001 1 0/20:43:31 - 0/20:46:59 1 247306 249510<br> 44 1921-293 : 0001 1 0/20:47:01 - 0/20:56:59 1 249511 255810<br>
45 1733-3722 : 0001 1 0/20:57:01 - 0/21:01:29 1 255811 258645<br> 46 G351.78-0.54 : 0001 1 0/21:01:31 - 0/21:21:29 1 258646 271245<br> 47 1733-3722 : 0001 1 0/21:21:31 - 0/21:24:59 1 271246 273450<br>
48 G351.78-0.54 : 0001 1 0/21:25:01 - 0/21:44:59 1 273451 286050<br> 49 1733-3722 : 0001 1 0/21:45:01 - 0/21:48:29 1 286051 288255<br> 50 G351.78-0.54 : 0001 1 0/21:48:31 - 0/22:08:49 1 288256 301065<br>
51 1733-3722 : 0001 1 0/22:08:51 - 0/22:12:39 1 301066 303480<br> 52 G351.78-0.54 : 0001 1 0/22:12:41 - 0/22:32:59 1 303481 316290<br> 53 1733-3722 : 0001 1 0/22:33:01 - 0/22:36:49 1 316291 318705<br>
54 G351.78-0.54 : 0001 1 0/22:36:51 - 0/22:57:09 1 318706 331515<br> 55 1733-3722 : 0001 1 0/22:57:11 - 0/23:00:59 1 331516 333930<br> 56 G351.78-0.54 : 0001 1 0/23:01:01 - 0/23:21:19 1 333931 346740<br>
57 1733-3722 : 0001 1 0/23:21:21 - 0/23:25:09 1 346741 349155<br> 58 G351.78-0.54 : 0001 1 0/23:25:11 - 0/23:45:29 1 349156 361965<br> 59 1733-3722 : 0001 1 0/23:45:31 - 0/23:49:19 1 361966 364380<br>
60 G351.78-0.54 : 0001 1 0/23:49:21 - 1/00:09:39 1 364381 377190<br> 61 1733-3722 : 0001 1 1/00:09:41 - 1/00:13:29 1 377191 379605<br> 62 1921-293 : 0001 1 1/00:13:31 - 1/00:33:49 1 379606 392415<br>
63 1733-3722 : 0001 1 1/00:33:51 - 1/00:38:39 1 392416 395460<br> 64 G351.78-0.54 : 0001 1 1/00:38:41 - 1/00:58:59 1 395461 408270<br> 65 1733-3722 : 0001 1 1/00:59:01 - 1/01:02:49 1 408271 410685<br>
66 G351.78-0.54 : 0001 1 1/01:02:51 - 1/01:23:09 1 410686 423495<br> 67 1733-3722 : 0001 1 1/01:23:11 - 1/01:26:59 1 423496 425910<br> 68 G351.78-0.54 : 0001 1 1/01:27:01 - 1/01:47:19 1 425911 438720<br>
69 1733-3722 : 0001 1 1/01:47:21 - 1/01:51:09 1 438721 441135<br>Type Q to stop, just hit RETURN to continue <br>
<br> localhos LISTR(31DEC12) 2 18-JUL-2012 08:22:30 Page 3<br>File = V215B .UVDATA. 1 Vol = 1 Userid = 2<br>Scan Source Qual Calcode Sub Timerange FrqID START VIS END VIS<br>
70 G351.78-0.54 : 0001 1 1/01:51:11 - 1/02:11:29 1 441136 453945<br> 71 1733-3722 : 0001 1 1/02:11:31 - 1/02:15:19 1 453946 456360<br> 72 G351.78-0.54 : 0001 1 1/02:15:21 - 1/02:35:39 1 456361 469170<br>
73 1733-3722 : 0001 1 1/02:35:41 - 1/02:39:29 1 469171 471585<br> 74 1921-293 : 0001 1 1/02:39:31 - 1/02:59:49 1 471586 484394<br> <br>Source summary<br>Velocity type = ' ' Definition = ' '<br>
<br> ID Source Qual Calcode RA(2000.0) Dec(2000.0) IFlux QFlux UFlux VFlux No. vis<br> 1 0637-752 : 0001 06:35:46.5082 -75:16:16.816 0.000 0.000 0.000 0.000 4500<br> 2 1733-3722 : 0001 17:33:15.1931 -37:22:32.398 0.000 0.000 0.000 0.000 78465<br>
3 G351.78-0.54 : 0001 17:26:42.5600 -36:09:17.500 0.000 0.000 0.000 0.000 356910<br> 4 1921-293 : 0001 19:24:51.0563 -29:14:30.117 0.000 0.000 0.000 0.000 44519<br> <br> ID Source Freq(GHz) Velocity(Km/s) Rest freq (GHz)<br>
1 All Sources 6.6670 0.0000 0.0000<br> <br>Frequency Table summary<br>FQID IF# Freq(GHz) BW(kHz) Ch.Sep(kHz) Sideband Bandcode<br> 1 1 6.66700000 4000.9768 0.9766 1<br>
AIPS 1: Resumes<br><br><br><br><br><br><br>__________________________________________________________________________________<br><br><br><br><br><br><br><br><br><br><br><br><br clear="all">Regards<b><br>:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::</b><br>
<div>
Maswanganye Jabulani Paul<b><br></b>HARTRAO, P.O.Box 443,Krugersdorp 1740, South Africa<b><br></b>Cell No: +27(0)72 541 0749 (H/W) <b><br></b>Phone: +27(12) 301-3225 (W)<b><br></b>Fax: +27(12) 301 3300 (w)<b><br></b>Email address: <a href="mailto:pop7paul@gmail.com" target="_blank">pop7paul@gmail.com</a> or<a href="mailto:pop7paul@gmail.com" target="_blank"> </a><a href="mailto:jabulani@hartrao.ac.za" target="_blank">jabulani@hartrao.ac.za</a><b><br>
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::</b><br>
</div><br>
<br><br><div class="gmail_quote">On 18 July 2012 01:11, Eric Greisen <span dir="ltr"><<a href="mailto:egreisen@nrao.edu" target="_blank">egreisen@nrao.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">jabulani maswanganye wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Dear All,<br>
<br>
I loaded my data wit 'ATLOD' and aparm(1)=-1, aparm(3)=1, aparm(7)=1, the rest set to default. The visibilities are incorrect. The visibilities are for the first scan and this has become a problem when I run 'CVEL'. 'CVEL' only do run for the first scan. My 'imh' and 'LISTR' are as follows:<br>
<br>
AIPS 1: Image=0637-752 (UV) Filename=0637-752 .UVDATA. 1<br>
AIPS 1: Telescope=ATLBA Receiver=<br>
AIPS 1: Observer= User #= 2<br>
AIPS 1: Observ. date=20-MAR-2007 Map date=05-JUL-2012<br>
AIPS 1: # visibilities 4500 Sort order TB<br>
</blockquote>
<br></div>
I was awfully slow to see this issue - and do not see any place obvious in ATLOD where it might come from. Your data take 98356 bytes on disk for each visibility. Is the UV file around 442601984 bytes in size or<br>
47643058176 bytes in size? (cd to your data area and do an ls -l UV*)<br>
<br>
Your split clearly used the NX table and found all the data - or thought that it did. Perhaps a UVCOP would do that and fix the header.<br>
<br>
You do need to look at the data before CVEL to make sure that it is there.<span class="HOEnZb"><font color="#888888"><br>
<br>
Eric Greisen<br>
<br>
</font></span></blockquote></div><br>