MDI Observables: mdi.fd

MDI Resident Archive

MDI Observables

mdi.fd_V

Description

Doppler velocity from either 30-second or 60-second observations in full-disc mode, sampled at second 00. The data are acquired continuously during all Dynamics Campaigns and during various targeted campaigns. An additional few Dopplergrams (typically three) are acquired every day as part of the regular monitoring. All of the data are acquired in linear polarization.

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	449	.107	.367	.020	.435	.002	0
Complete	427	.106	.360	.019	.429	.002	0

Data Storage

Statistics of SUMS data storage:

SUMS directories: 124,147
Average size (MB): 23.713
Minimum size (MB): .040
Maximum size (MB): 62.314
Total size (GB): 2875.019

DSDS Source Series

sha.dsds[mdi][lev1.5][fd_V_01h]

sha.dsds[mdi][lev1.5][fd_Vm_01h]

MDI Product Codes of Contributing Level 0 Data

80000000 (only for records with no data)

04c4b400*

42000fc0

42020fc0

42400fc0

42420f00

42420f60

42420fc0

46061fc0*

46451fc0*

48440fc0*

48470f00*

48470fc0*

*N.B. DPC 04c4b400 is erroneous, due to a bad default value for missing data records; it only occurs in records with no data. Likewise, DPC's 464* and 484* are also erroneous; they only occur in records that were superseded with others for the same times with correct values.

Note that the original source series sha.dsds[mdi][lev1.5][fd_Vm_01h] included Dopplergrams taken in the “bottom” half of the minute (second 30), for which the polarization state may have (and frequently was) circular.

Keywords

Prime key(s):

T_REC (time) : 8093090/8093090 valid (7922330 distinct):
    range: 1996.03.19_00:00:00_TAI – 2011.04.11_15:00:00_TAI

Variable key(s):

cparms_sg000 (string) : all 8093090 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 8093090 default: = 0 (0)
data_bscale (double) : all 8093090 default: = 1 (1)
T_OBS (time) : 3206588/8093090 valid (3076720 distinct):
    range: 1996.03.19_00:00:00_TAI – 2011.04.11_14:12:00_TAI
    4886502 default: = 'NaN' (nan)
DATE__OBS (time) : 3206588/8093090 valid (3076720 distinct):
    range: 1996-03-18T23:59:00Z – 2011-04-11T14:11:11Z
    4886502 default: = 'NaN' (nan)
CDELT1 (float) : 3206588/8093090 valid (19969 distinct):
    range: 1.977283 – 1.986302
    4886502 default: = 'NaN' (nan)
CDELT2 (float) : 3206588/8093090 valid (19969 distinct):
    range: 1.977283 – 1.986302
    4886502 default: = 'NaN' (nan)
CRPIX1 (float) : 3206588/8093090 valid (30775 distinct):
    range: 220.233 – 523.978
    4886502 default: = 'NaN' (nan)
CRPIX2 (float) : 3206588/8093090 valid (51038 distinct):
    range: 220.957 – 525.774
    4886502 default: = 'NaN' (nan)
CAR_ROT (int) : 7986344/8093090 valid (200 distinct):
    range: 1907 – 2108
    106746 default: = -2147483648 (-2147483648)
CRLN_OBS (float) : 7986344/8093090 valid (6656484 distinct):
    range: 0.000 – 360.000
    106746 default: = 'NaN' (nan)
CRLT_OBS (float) : 7986344/8093090 valid (6734263 distinct):
    range: -7.3032 – 7.2937
    106746 default: = 'NaN' (nan)
DSUN_OBS (double) : 7986344/8093090 valid (7821151 distinct):
    range: 15067260295.12 – 150819330559.33
    106746 default: = 'NaN' (nan)
OBS_VR (double) : 7986344/8093090 valid (7821274 distinct):
    range: -588.730394 – 587.618145
    106746 default: = 'NaN' (nan)
OBS_VW (double) : 7986344/8093090 valid (7821207 distinct):
    range: 2882.993342 – 30079.387841
    106746 default: = 'NaN' (nan)
OBS_VN (double) : 7986344/8093090 valid (7821267 distinct):
    range: -3827.567663 – 3722.207934
    106746 default: = 'NaN' (nan)
RSUN_OBS (double) : 7986344/8093090 valid (7821256 distinct):
    range: 951.872775 – 9531.355122
    106746 default: = 'NaN' (nan)
R_SUN (float) : 3206588/8093090 valid (564128 distinct):
    range: 480.232 – 498.886
    4886502 default: = 'NaN' (nan)
X0 (float) : 3206588/8093090 valid (46841 distinct):
    range: 219.233 – 522.978
    4886502 default: = 'NaN' (nan)
Y0 (float) : 3206588/8093090 valid (67333 distinct):
    range: 219.957 – 524.774
    4886502 default: = 'NaN' (nan)
EARTH_DT (float) : 3206588/8093090 valid (1932814 distinct):
    range: 4.095437 – 5.654347
    4886502 default: = 'NaN' (nan)
DATAVALS (int) : 4034597/8093090 valid (39207 distinct):
    range: 0 – 798020
    4058493 default: = -2147483648 (-2147483648)
MISSVALS (int) : 3206588/8093090 valid (38903 distinct):
    range: 0 – 1042668
    4886502 default: = -2147483648 (-2147483648)
DATAMIN (float) : 3206588/8093090 valid (50189 distinct):
    range: -323933962000.0 – 3354.0
    4886502 default: = 'NaN' (nan)
DATAMAX (float) : 3206588/8093090 valid (45910 distinct):
    range: -834.0 – 302155891000.0
    4886502 default: = 'NaN' (nan)
DATAMEDN (float) : 3206588/8093090 valid (2238873 distinct):
    range: -8898.223 – 473026.562
    4886502 default: = 'NaN' (nan)
DATAMEAN (float) : 3206588/8093090 valid (2981500 distinct):
    range: -1829180.750 – 5621592.000
    4886502 default: = 'NaN' (nan)
DATARMS (float) : 3206588/8093090 valid (1420148 distinct):
    range: 0.000000 – 887829440.000000
    4886502 default: = 'NaN' (nan)
DATASKEW (float) : 3206588/8093090 valid (2830716 distinct):
    range: -893.318 – 893.313
    4886502 default: = 'NaN' (nan)
DATAKURT (float) : 3206588/8093090 valid (1695444 distinct):
    range: -1.914 – 798014.938
    4886502 default: = 'NaN' (nan)
CROP_RAD (float) : 3206588/8093090 valid (3 distinct):
    492.0
    504.0
    480.0
    4886502 default: = 'NaN' (nan)
INTERVAL (float) : 3206588/8093090 valid (2 distinct):
    60.00
    30.00
    4886502 default: = 'NaN' (nan)
RUNTIME (time) : 3206588/8093090 valid (62894 distinct):
    range: 1998.08.06_20:20_UTC – 2011.07.21_19:04_UTC
    4886502 default: = 'NaN' (nan)
SOURCE (string) : 3206588/8093090 valid (3076731 distinct):
    range: prog:mdi,level:lev1,series:42020fc0_01h[143139],sel:[0] – prog:mdi,level:lev1[9],series:42420fc0_01h[44081],sel:[9]
    4886502 default: = '' ()
BLDVER15 (string) : 3206588/8093090 valid (47 distinct):
    range: -40800 – 60100
    4886502 default: = '' ()
CALTBLS (string) : 3206588/8093090 valid (6 distinct):
    range: mdi.caltables_doppler[fd_tune_0] – mdi.caltables_intensity[fd_vers_1]
    4886502 default: = '' ()
TBLXYUPD (time) : 3206588/8093090 valid (1135 distinct):
    range: 1998.07.27_18:21:17_UTC – 2011.06.06_19:19:50_UTC
    4886502 default: = 'NaN' (nan)
XY_FROM (string) : 3206588/8093090 valid (3 distinct):
    SMOOTH
    DEFAULT
    QUICKLOOK
    4886502 default: = '' ()
XY_QUAL (int) : 3206495/8093090 valid (2 distinct):
    0
    3
    4886595 default: = -2147483648 (-2147483648)
DATE (time) : 7986545/8093090 valid (264688 distinct):
    range: 2011-08-24T18:07Z – 2014-06-12T18:57Z
    106545 default: = 'NaN' (nan)
CROTA2 (float) : 3206588/8093090 valid (13375 distinct):
    range: -180.0 – 180.0
    4886502 default: = 'NaN' (nan)
HISTORY (string) : all 8093090 default: = '' ()
BLD_VERS (string) : 688/8093090 valid (2 distinct):
    V6R0X
    V8R4X
    8092402 default: = 'unknown' (unknown)
DPC (int) : 8093090/8093090 valid (13 distinct):
    range: 0xffffffff80000000 – 0x48470fc0
QUALITY (int) : 8093090/8093090 valid (55 distinct):
    range: 0xffffffff80000000 – 0x0020061c

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
TELESCOP (string) : SOHO
WAVELNTH (int) : 6768
ORIGIN (string) : SOI Science Support Center
ROLL_TBL (string) : mdi.roll_table
RSUN_REF (double) : 696000000
POLSTATE (string) : LP
T_REC_epoch (time) : 1977.01.01_00:33:13_TAI
T_REC_step (float) : 60.0
CAMERA (string) : MDI
CONTENT (string) : MDI full-disc Dopplergram
COMMENT (string) : Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO)

Special Notes

this page last modified 24 Oct 2017, 15:20-0700