MDI Observables: mdi.fd_V

MDI Resident Archive

MDI Observables

mdi.fd_V_bin2x2

Description

Doppler velocity from 30-second observations in full-disc mode, sampled at second 30 and binned 2*2 on the camera. The data are acquired occasionally during certain targeted campaigns. All of the data are acquired in circular polarization. There is one record 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 91% 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	.0108	.00025	<0.00001	0	0
Complete	0	0	.0106	.00022	<0.00001	0	0

Most of the data were obtained during regular daily campaigns between 1996.07.26 and 1997.04.13 and again between 1997.06.13 and 1997.07.23. Additional data were taken as part of very brief campaigns or test/validation sequences only at the following times:

1997.08.30 02:07–02:10
1997.08.31 06:38–06:41
1997.08.31 18:47–18:50
1997.09.01 19:35–19:38
1997.09.02 17:41–17:44
1997.11.03 20:41–20:45
1998.11.10 20:18–20:50
1998.12.04 19:42–20:08
1999.10.06 13:29–13:43
2002.03.12 16:49–16:52
2002.06.13 17:45–17:50
2006.07.27 20:16–20:20
2007.03.21 21:31–21:33
2007.03.28 16:44–16:51
2009.08.28 22:26–22:31

Superseded records: 60 in addition to 141780 valid.

Data Storage

Statistics of SUMS data storage:

SUMS directories: 2363
Average size (MB): 1.444
Minimum size (MB): .037
Maximum size (MB): 17.250
Total size (GB): 3.332

DSDS Source Series

sha.dsds[mdi][lev1.5][fd_Vm_bin2x2_01h]

MDI Product Codes of Contributing Level 0 Data

80000000 (only for records with no data)

42474800

Keywords

Prime key(s):

T_REC (time) : 141840/141840 valid (141780 distinct):
    range: 1996.07.26_04:00:30_TAI – 2009.08.28_22:59:30_TAI

Variable key(s):

cparms_sg000 (string) : all 141840 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 141840 default: = 0 (0)
data_bscale (double) : all 141840 default: = 1 (1)
DPC (int) : 11892/141840 valid (1 distinct):
    0x42474800
    129948 default: = -2147483648 (0x80000000)
T_OBS (time) : 11892/141840 valid (11890 distinct):
    range: 1996.07.26_04:01:30_TAI – 2009.08.28_22:31:30_TAI
    129948 default: = 'NaN' (nan)
DATE__OBS (time) : 11892/141840 valid (11890 distinct):
    range: 1996-07-26T04:00:45Z – 2009-08-28T22:30:41Z
    129948 default: = 'NaN' (nan)
CDELT1 (float) : 11892/141840 valid (1719 distinct):
    range: 3.954689 – 3.972075
    129948 default: = 'NaN' (nan)
CDELT2 (float) : 11892/141840 valid (1719 distinct):
    range: 3.954689 – 3.972075
    129948 default: = 'NaN' (nan)
CRPIX1 (float) : 11892/141840 valid (4450 distinct):
    range: 256.256 – 256.975
    129948 default: = 'NaN' (nan)
CRPIX2 (float) : 11892/141840 valid (5296 distinct):
    range: 255.978 – 256.972
    129948 default: = 'NaN' (nan)
CROTA2 (float) : 11892/141840 valid (11 distinct):
    range: -9.9 – 180.0
    129948 default: = 'NaN' (nan)
CAR_ROT (int) : 141840/141840 valid (23 distinct):
    range: 1912 – 2087
CRLN_OBS (float) : 141840/141840 valid (141307 distinct):
    range: 0.002 – 359.998
CRLT_OBS (float) : 141840/141840 valid (141051 distinct):
    range: -7.2390 – 7.2937
DSUN_OBS (double) : 141840/141840 valid (141780 distinct):
    range: 145533264801.96 – 150597018447.09
OBS_VR (double) : 141840/141840 valid (141780 distinct):
    range: -588.713148 – 582.003961
OBS_VW (double) : 141840/141840 valid (141778 distinct):
    range: 28718.119769 – 29959.407229
OBS_VN (double) : 141840/141840 valid (141780 distinct):
    range: -3809.283198 – 3682.346288
RSUN_OBS (double) : 141840/141840 valid (141780 distinct):
    range: 953.277945 – 986.447000
R_SUN (float) : 11892/141840 valid (10235 distinct):
    range: 240.236 – 249.436
    129948 default: = 'NaN' (nan)
X0 (float) : 11892/141840 valid (6317 distinct):
    range: 255.256 – 255.975
    129948 default: = 'NaN' (nan)
Y0 (float) : 11892/141840 valid (6999 distinct):
    range: 254.978 – 255.972
    129948 default: = 'NaN' (nan)
EARTH_DT (float) : 11892/141840 valid (11590 distinct):
    range: 4.135681 – 5.579002
    129948 default: = 'NaN' (nan)
DATAVALS (int) : 141840/141840 valid (108 distinct):
    range: 0 – 262144
MISSVALS (int) : 11892/141840 valid (107 distinct):
    range: 0 – 260896
    129948 default: = -2147483648 (-2147483648)
DATAMIN (float) : 11892/141840 valid (1060 distinct):
    range: -32767.0 – -1432.0
    129948 default: = 'NaN' (nan)
DATAMAX (float) : 11892/141840 valid (909 distinct):
    range: 352.0 – 32765.0
    129948 default: = 'NaN' (nan)
DATAMEDN (float) : 11892/141840 valid (11242 distinct):
    range: -1650.915 – 275.248
    129948 default: = 'NaN' (nan)
DATAMEAN (float) : 11892/141840 valid (11863 distinct):
    range: -3195.008 – 495.923
    129948 default: = 'NaN' (nan)
DATARMS (float) : 11892/141840 valid (11693 distinct):
    range: 465.199280 – 7164.988280
    129948 default: = 'NaN' (nan)
DATASKEW (float) : 11892/141840 valid (11844 distinct):
    range: -1.262 – 4.152
    129948 default: = 'NaN' (nan)
DATAKURT (float) : 11892/141840 valid (11853 distinct):
    range: -0.645 – 135.382
    129948 default: = 'NaN' (nan)
CROP_RAD (float) : all 141840 default: = 'NaN' (nan)
DATE (time) : 141840/141840 valid (12090 distinct):
    range: 2012-07-10T20:42Z – 2012-07-11T00:15Z
RUNTIME (time) : 11892/141840 valid (1996 distinct):
    range: 2001.02.14_21:20_UTC – 2009.09.02_00:45_UTC
    129948 default: = 'NaN' (nan)
SOURCE (string) : 11892/141840 valid (11890 distinct):
    range: prog:mdi,level:lev1[10],series:42474800_01h[39027],sel:[0] – prog:mdi,level:lev1[9],series:42474800_01h[39030],sel:[0]
    129948 default: = '' ()
BLDVER15 (string) : 11892/141840 valid (9 distinct):
    range: -50600 – 60100
    129948 default: = '' ()
CALTBLS (string) : 11892/141840 valid (3 distinct):
    mdi.caltables_doppler[fd_tune_2]
    mdi.caltables_doppler[fd_tune_6]
    mdi.caltables_doppler[fd_tune_5]
    129948 default: = '' ()
TBLXYUPD (time) : 11892/141840 valid (13 distinct):
    range: 2001.02.06_21:54:43_UTC – 2009.09.01_20:11:21_UTC
    129948 default: = 'NaN' (nan)
XY_FROM (string) : 11892/141840 valid (1 distinct):
    SMOOTH
    129948 default: = '' ()
XY_QUAL (int) : 11892/141840 valid (1 distinct):
    0
    129948 default: = -2147483648 (-2147483648)
HISTORY (string) : all 141840 default: = '' ()
BLD_VERS (string) : 11892/141840 valid (1 distinct):
    V6R3X
    129948 default: = 'unknown' (unknown)
COMMENT (string) : 141840/141840 valid (1 distinct):
    Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO).
QUALITY (int) : 141840/141840 valid (15 distinct):
    range: 0x80000000 – 0x00000285

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) : 60.0
CAMERA (string) : MDI
TELESCOP (string) : SOHO
WAVELNTH (int) : 6768
ORIGIN (string) : SOI Science Support Center
ROLL_TBL (string) : mdi.roll_table
RSUN_REF (double) : 696000000
POLSTATE (string) : CP
T_REC_epoch (time) : 1977.01.01_00:33:13_TAI
T_REC_step (float) : 60.0
CONTENT (string) : MDI Full Disk 2x2 binned Dopplergram
INTERVAL (float) : 30.00

Special Notes

this page last modified 16 May 2015, 15:19-0700