NASA Analysis Report for Q21114 ($21APR24XK) This report is a contributed analysis report that does not correspond to the database maintained by the IVS Data Centers for this session. (Analyzed by Karen Baver, Goddard Space Flight Center VLBI Analysis Center. Spoolfile source: interactive solve/nuSolve analysis.) Problems: The first 12 observations (07:30 through 07:42) were affected by the failure of MK-VLBA to properly switch over from the previous observation. In addition, the observations at 07:37 and 07:39 were not recorded, and the correlator was forced to omit the first observation (07:30) because inclusion of this observation prevented the correlator from creating the vgosDB file set. The other nine observations were correlated, but they had quality codes of zero and were not usable. The observations at 07:50 and 07:54 were affected by a power glitch and were correlated but had quality codes of zero. Two additional observations at 07:49 and 08:18 had quality codes of zero for unspecified reasons, and they were correlated but not usable. Number of observations rejected during correlation: 3 The first observation, the observation of 1639+230 at 07:30, was omitted from the correlated vgosDB file set because an error in the observation prevented the correlator from including it. The following observations were not recorded: observation of 0738+491 at 07:37 observation of 0814+425 at 07:39 Number of observations not usable by the software: 13 The following observations were affected by the failure of MK-VLBA to switch over from the previous observation: observation 1, WETTZELL:MK-VLBA , 1746+470, 07:31:38, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' observation 2, WETTZELL:MK-VLBA , 3C371 , 07:32:42, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' observation 3, WETTZELL:MK-VLBA , 1803+784, 07:33:36, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' observation 4, WETTZELL:MK-VLBA , 0716+714, 07:34:46, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' observation 5, WETTZELL:MK-VLBA , 0613+570, 07:35:46, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' observation 6, WETTZELL:MK-VLBA , 0642+449, 07:36:44, quality code X: 0 S: 0, fringe code X: 'F' S: ' ' observation 7, WETTZELL:MK-VLBA , 0805+410, 07:38:52, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' observation 8, WETTZELL:MK-VLBA , 0955+476, 07:40:57, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' observation 9, WETTZELL:MK-VLBA , 1418+546, 07:42:26, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' The following observations were affected by a power glitch: observation 15, WETTZELL:MK-VLBA , 1504+377, 07:50:51, quality code X: 9 S: 0, fringe code X: ' ' S: ' ' observation 18, WETTZELL:MK-VLBA , 1751+288, 07:54:54, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' The following observations were not usable, but the correlator report did not give a specific reason why: observation 14, WETTZELL:MK-VLBA , 1417+385, 07:49:33, quality code X: 0 S: 9, fringe code X: 'F' S: ' ' observation 38, WETTZELL:MK-VLBA , 1749+096, 08:18:50, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' Number of observations rejected during analysis: 0 Other comments: None. Parameterization: 6 parameters: UT1 offset atmosphere offset for: MK-VLBA WETTZELL clock offset, first order term, and second order term for: WETTZELL Clock breaks: None Session Statistics Observations: 51 scheduled 48 correlated (included in the database) 35 recoverable (usable in Solve/nuSolve) 35 used Session fit: 36.431 ps UT1 formal error: 5.16 microsec Source Performance Number of Observations Scheduled Correlated* Used 0529+483 2 2 2 0552+398 2 2 2 0613+570 3 3 2 0642+449 3 3 2 0716+714 3 3 2 0738+491 3 2 2 0805+410 3 3 2 0814+425 2 1 1 0955+476 1 1 0 1039+811 2 2 2 1053+704 2 2 2 1417+385 2 2 1 1418+546 2 2 1 1504+377 2 2 1 1617+229 1 1 1 1639+230 2 1 1 1746+470 3 3 2 1749+096 1 1 0 1751+288 2 2 1 1803+784 3 3 2 1806+456 2 2 2 3C371 3 3 2 1849+670 2 2 2 ------------ --------- ---------- ------ Source Total 51 48 35 * Correlated means included in the database. Please note that the number of recoverable (usable) observations cannot be broken down by source for Intensive solutions.