MDI Observables: mdi.fd_V_bin2x2

MDI Resident Archive

MDI Observables

mdi.fd_V_bin2x2_30s

Description

Doppler velocity from 30-second observations in full-disc mode, sampled at seconds 00 and 30 and binned 2*2 on the camera. Although 30-second observations are sometimes acquired at second 30 during campaigns, binned observations are not made at second 00 during normal operations. However, unbinned full-disc 30-sec Dopplergrams acquired as part of the normal sequence have been binned down to correspond to the data for the lower half of the minute when these data exist. This series is only populated during minutes in which binned full-disc Doppler data were acquired second 30 and either binned or unbinned full-disc Doppler data were acquired at second 00.

There are two records per minute during hours when there are any images, to assure continuity of certain ancillary data. Records for which there is no image (fill records) have the high-order bit of the QUALITY keyvalue set, and have DATAVALS = 0. Approximately 10% of the records are fill.

Coverage / Duty Cycle

The fraction of possible time intervals containing partial or complete images during each mission phase is as follows:

	<1996.04.20 (Record count only)	1996.04.20 – 1996.05.22	1996.05.23 – 1998.06.24	1998.10.20 – 1998.12.21	1999.02.03 – 2010.09.14	2010.09.14 – 2011.04.12	>2011.04.12 (Record count only)
Partial	0	0	.00742	0	.00007	0	0
Complete	0	0	.00728	0	.00007	0	0

Most of the data were obtained during the following campaigns:

1997.11.10 13:32:00–23:11:30
1997.12.11 16:35:00 – 12.15_09:42:30
1998.01.05 18:20:00–20:28:30
1998.01.06 17:58:00–20:30:30
1998.01.09 10:51:00 – 01.25_21:35:30
1998.01.26 14:00:00 – 01.28_00:59:30
1998.02.03 00:01:00–23:59:30
1998.02.06 00:01:00 – 03.03_18:57:30
1999.04.21 00:01:10–20:12:30

Additional data were taken as part of very brief campaigns or test/validation sequences only at the following times:

1997.11.04 19:00:00–19:03:30
1997.11.10 07:59:00–08:21:30
1997.11.11 09:56:00–10:26:30
1997.12.05 21:22:00–21:28:30
1997.12.11 07:00:00–07:38:30
1997.12.15 18:07:00–18:17:30
1997.12.16 15:14:00–15:53:30
1998.11.10 19:41:00–19:44:30
1998.11.11 20:57:00–21:00:30

Superseded records: 0 in addition to 19372 valid

Data Storage

Statistics of SUMS data storage:

SUMS directories: 166
Average size (MB): 29.465
Minimum size (MB): 1.115
Maximum size (MB): 33.543
Total size (GB): 4.776

DSDS Source Series

sha.dsds[mdi][lev1.5][fd_V_bin2x2_30s_01h]

MDI Product Codes of Contributing Level 0 Data

424207e0

424807e0

80000000 (only for fill records with no data)

Keywords

Prime key(s):

T_REC (time) : 19372/19372 valid (19372 distinct):
    range: 1997.12.15_00:00:00_TAI – 1999.04.21_20:59:30_TAI

Variable key(s):

DPC (int) : 17262/19372 valid (2 distinct):
    0x424207e0
    0x424807e0
    2110 default: = -2147483648 (0x80000000)
cparms_sg000 (string) : all 19372 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 19372 default: = 0 (0)
data_bscale (double) : all 19372 default: = 1 (1)
T_OBS (time) : 17262/19372 valid (17262 distinct):
    range: 1997.12.15_00:01:00_TAI – 1999.04.21_20:12:30_TAI
    2110 default: = 'NaN' (nan)
DATE__OBS (time) : 17262/19372 valid (17262 distinct):
    range: 1997-12-15T00:00:14Z – 1999-04-21T20:11:43Z
    2110 default: = 'NaN' (nan)
CDELT1 (float) : 17262/19372 valid (52 distinct):
    range: 3.958553 – 3.966375
    2110 default: = 'NaN' (nan)
CDELT2 (float) : 17262/19372 valid (52 distinct):
    range: 3.958553 – 3.966375
    2110 default: = 'NaN' (nan)
CRPIX1 (float) : 17262/19372 valid (1527 distinct):
    range: 256.301 – 256.471
    2110 default: = 'NaN' (nan)
CRPIX2 (float) : 17262/19372 valid (1513 distinct):
    range: 256.328 – 256.446
    2110 default: = 'NaN' (nan)
CROTA2 (float) : 17262/19372 valid (1 distinct):
    0.0
    2110 default: = 'NaN' (nan)
CAR_ROT (int) : 19372/19372 valid (4 distinct):
    1932
    1930
    1948
    1931
CRLN_OBS (float) : 19372/19372 valid (19372 distinct):
    range: 124.315 – 350.946
CRLT_OBS (float) : 19372/19372 valid (19372 distinct):
    range: -5.7210 – -0.9831
DSUN_OBS (double) : 19372/19372 valid (19372 distinct):
    range: 145629537592.78 – 148756402636.58
OBS_VR (double) : 19372/19372 valid (19372 distinct):
    range: -104.729201 – 387.977090
OBS_VW (double) : 19372/19372 valid (19372 distinct):
    range: 29386.822760 – 29921.467016
OBS_VN (double) : 19372/19372 valid (19372 distinct):
    range: -3752.198495 – 2629.944112
RSUN_OBS (double) : 19372/19372 valid (19372 distinct):
    range: 965.073277 – 985.794874
R_SUN (float) : 17262/19372 valid (12786 distinct):
    range: 243.315 – 249.027
    2110 default: = 'NaN' (nan)
X0 (float) : 17262/19372 valid (2605 distinct):
    range: 255.301 – 255.471
    2110 default: = 'NaN' (nan)
Y0 (float) : 17262/19372 valid (2826 distinct):
    range: 255.328 – 255.446
    2110 default: = 'NaN' (nan)
EARTH_DT (float) : 17262/19372 valid (17256 distinct):
    range: 4.298448 – 5.320248
    2110 default: = 'NaN' (nan)
DATAVALS (int) : 19372/19372 valid (209 distinct):
    range: 0 – 199472
MISSVALS (int) : 17262/19372 valid (209 distinct):
    range: 0 – 199472
    2110 default: = -2147483648 (-2147483648)
DATAMIN (float) : 17262/19372 valid (6032 distinct):
    range: -122446987000.0 – 340282346999999999997267433466808500224.0
    2110 default: = 'NaN' (nan)
DATAMAX (float) : 17262/19372 valid (5602 distinct):
    range: -340282346999999999997267433466808500224.0 – 32231.0
    2110 default: = 'NaN' (nan)
DATAMEDN (float) : 17262/19372 valid (16705 distinct):
    range: -279.948 – 163834.016
    2110 default: = 'NaN' (nan)
DATAMEAN (float) : 17262/19372 valid (17209 distinct):
    range: -9261584.000 – 8737.847
    2110 default: = 'NaN' (nan)
DATARMS (float) : 17262/19372 valid (15808 distinct):
    range: 0.000000 – 1064877180.000000
    2110 default: = 'NaN' (nan)
DATASKEW (float) : 17262/19372 valid (17126 distinct):
    range: -114.970 – 4.353
    2110 default: = 'NaN' (nan)
DATAKURT (float) : 17262/19372 valid (16850 distinct):
    range: -1.189 – 13216.000
    2110 default: = 'NaN' (nan)
CROP_RAD (float) : all 19372 default: = 'NaN' (nan)
DATE (time) : 19372/19372 valid (17428 distinct):
    range: 2013-07-01T19:07Z – 2013-07-01T19:33Z
RUNTIME (time) : 17262/19372 valid (162 distinct):
    range: 1998.08.21_10:46_UTC – 2000.04.25_16:01_UTC
    2110 default: = 'NaN' (nan)
SOURCE (string) : 17262/19372 valid (17262 distinct):
    range: prog:mdi,level:lev1[10],series:424207e0_01h[44040],sel:[0] – prog:mdi,level:lev1[8],series:424807e0_01h[44040],sel:[9]
    2110 default: = '' ()
BLDVER15 (string) : 17262/19372 valid (4 distinct):
    30300
    40600
    40500
    40001
    2110 default: = '' ()
CALTBLS (string) : 17262/19372 valid (2 distinct):
    mdi.caltables_doppler[fd_tune_6]
    mdi.caltables_doppler[fd_tune_5]
    2110 default: = '' ()
TBLXYUPD (time) : 17262/19372 valid (3 distinct):
    2000.01.21_20:18:52_UTC
    2000.04.24_18:02:12_UTC
    1998.07.27_18:21:17_UTC
    2110 default: = 'NaN' (nan)
XY_FROM (string) : 17262/19372 valid (1 distinct):
    SMOOTH
    2110 default: = '' ()
XY_QUAL (int) : 17262/19372 valid (1 distinct):
    0
    2110 default: = -2147483648 (-2147483648)
HISTORY (string) : all 19372 default: = '' ()
BLD_VERS (string) : 17262/19372 valid (1 distinct):
    V8R0X
    2110 default: = 'unknown' (unknown)
QUALITY (int) : 19372/19372 valid (20 distinct):
    range: 0x80000000 – 0x000002fd

Constant key(s):

CRVAL1 (float) : 0.000
CRVAL2 (float) : 0.000
CTYPE1 (string) : HPLN-TAN
CTYPE2 (string) : HPLT-TAN
CUNIT1 (string) : arcsec
CUNIT2 (string) : arcsec
WCSAXES (int) : 2
WCSNAME (string) : Helioprojective-cartesian
BUNIT (string) : m/s
CADENCE (float) : 30.0
CAMERA (string) : MDI
TELESCOP (string) : SOHO
WAVELNTH (int) : 6768
ORIGIN (string) : SOI Science Support Center
INTERVAL (float) : 30.00
ROLL_TBL (string) : mdi.roll_table
RSUN_REF (double) : 696000000
POLSTATE (string) : LP
T_REC_epoch (time) : 1977.01.01_00:33:12_TAI
T_REC_step (float) : 30.0
CONTENT (string) : MDI Full Disk 2x2 binned High Cadence Dopplergram
COMMENT (string) : Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO)

Special Notes

Some hours containing only data on a 60-second cadence were erroneously included in the population of this series. This includes the data for the following hours:

1998.01.06_06:00–59
1998.01.06_14:00–59
1998.03.03_00:00

With the exception of the data acquired in the intervals 1997.12.11 07:00:00–07:38:30 and 1997.12.16 15:14:00–15:53:30, these data were always acquired in conjunction with data from the series fd_Ic_bin2x2_30s.

There are some times when relevant data were not processed through to the final observable product. For example. there are 1189 hours with data in series sha.dsds[mdi][lev1.4][fd_V_bin2x2_30s_01h], but only 1162 hours with data in series sha.dsds[mdi][lev1.5][fd_V_bin2x2_30s_01h]. There are 1414 hours with data from the parent level 0 series sha.dsds[mdi][lev0][424807e0_01h] (and 1433 hours with data in the supplementary reconstructed series sha.dsds[mdi][lev0][424207e0_01h]). These include all of the times when there are records in fd_Ic_bin2x2_30s but not in this series.

this page last modified 7 Aug 2015, 10:57-0700