MDI Observables: mdi.fd_M

MDI Resident Archive

MDI Observables

mdi.fd_M_Lev182

Description

Line-of-sight magnetic field from 30-second observations in full-disc mode, sampled once per minute at second 30. The data are acquired during targeted campaigns.

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 67% of the records are fill. For more information, see the release notes for this data series.

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	<0.001	.071	.068	.404	.104	0
Complete	0	0	.069	.067	.396	.104	0

Superseded records: 1920 in addition to 7861021 valid

Data Storage

Statistics of SUMS data storage:

SUMS directories: 117,193
Average size (MB): 32.115
Minimum size (MB): .042
Maximum size (MB): 97.975
Total size (GB): 3675.491

DSDS Source Series

sha.dsds[mdi][lev1.5][fd_M_01h]

MDI Product Codes of Contributing Level 0 Data

04c4b400*

48410fc0

48440fc0

48470f00

48470f60

48470fc0

80000000 (only for fill records with no data)

*N.B. These are erroneous, due to a bad default value for missing data records.

Keywords

Prime key(s):

T_REC (time) : 7862941/7862941 valid (7861021 distinct):
    range: 1996.04.30_23:00:00_TAI – 2011.04.12_00:00:30_TAI

Variable key(s):

cparms_sg000 (string) : all 7862941 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 7862941 default: = 0 (0)
data_bscale (double) : all 7862941 default: = 0.01 (0.01)
T_OBS (time) : 2588798/7862941 valid (2588296 distinct):
    range: 1996.04.30_23:24:30_TAI – 2011.04.11_14:30:30_TAI
    5274143 default: = 'NaN' (nan)
DATE__OBS (time) : 2588798/7862941 valid (2588296 distinct):
    range: 1996-04-30T23:23:45Z – 2011-04-11T14:29:41Z
    5274143 default: = 'NaN' (nan)
CDELT1 (float) : 2588798/7862941 valid (20410 distinct):
    range: 1.977283 – 1.986302
    5274143 default: = 'NaN' (nan)
CDELT2 (float) : 2588798/7862941 valid (20410 distinct):
    range: 1.977283 – 1.986302
    5274143 default: = 'NaN' (nan)
CRPIX1 (float) : 2588798/7862941 valid (31379 distinct):
    range: 511.239 – 514.360
    5274143 default: = 'NaN' (nan)
CRPIX2 (float) : 2588798/7862941 valid (47596 distinct):
    range: 510.261 – 514.049
    5274143 default: = 'NaN' (nan)
CROTA2 (float) : 2588798/7862941 valid (31266 distinct):
    range: -169.3 – 180.0
    5274143 default: = 'NaN' (nan)
CAR_ROT (int) : 6431815/7862941 valid (199 distinct):
    range: 1908 – 2108
    1431126 default: = -2147483648 (-2147483648)
CRLN_OBS (float) : 6431815/7862941 valid (5628844 distinct):
    range: 0.000 – 360.000
    1431126 default: = 'NaN' (nan)
CRLT_OBS (float) : 6431815/7862941 valid (5653677 distinct):
    range: -7.3032 – 7.2937
    1431126 default: = 'NaN' (nan)
DSUN_OBS (double) : 6431815/7862941 valid (6431272 distinct):
    range: 21888022347.89 – 150819330558.89
    1431126 default: = 'NaN' (nan)
OBS_VR (double) : 6431815/7862941 valid (6431313 distinct):
    range: -588.730580 – 587.618284
    1431126 default: = 'NaN' (nan)
OBS_VW (double) : 6431815/7862941 valid (6431280 distinct):
    range: 4324.490014 – 30079.387973
    1431126 default: = 'NaN' (nan)
OBS_VN (double) : 6431815/7862941 valid (6431313 distinct):
    range: -3827.567662 – 3722.207935
    1431126 default: = 'NaN' (nan)
RSUN_OBS (double) : 6431815/7862941 valid (6431305 distinct):
    range: 951.872775 – 6559.958080
    1431126 default: = 'NaN' (nan)
R_SUN (float) : 2588798/7862941 valid (586855 distinct):
    range: 479.279 – 498.872
    5274143 default: = 'NaN' (nan)
X0 (float) : 2588798/7862941 valid (47420 distinct):
    range: 510.239 – 513.360
    5274143 default: = 'NaN' (nan)
Y0 (float) : 2588798/7862941 valid (62455 distinct):
    range: 509.261 – 513.049
    5274143 default: = 'NaN' (nan)
EARTH_DT (float) : 2588798/7862941 valid (1726725 distinct):
    range: 4.095440 – 5.641623
    5274143 default: = 'NaN' (nan)
DATAVALS (int) : 3913380/7862941 valid (86403 distinct):
    range: 0 – 781894
    3949561 default: = -2147483648 (-2147483648)
MISSVALS (int) : 2588798/7862941 valid (29131 distinct):
    range: 0 – 798020
    5274143 default: = -2147483648 (-2147483648)
DATAMIN (float) : 2588798/7862941 valid (2373406 distinct):
    range: -8334.5 – 6486.4
    5274143 default: = 'NaN' (nan)
DATAMAX (float) : 2588798/7862941 valid (2384367 distinct):
    range: -6749.8 – 8336.4
    5274143 default: = 'NaN' (nan)
DATAMEDN (float) : 2588798/7862941 valid (2388429 distinct):
    range: -7595.441 – 8038.250
    5274143 default: = 'NaN' (nan)
DATAMEAN (float) : 2588798/7862941 valid (2546729 distinct):
    range: -7479.757 – 7900.765
    5274143 default: = 'NaN' (nan)
DATARMS (float) : 2588798/7862941 valid (2376053 distinct):
    range: 0.000000 – 3646.951660
    5274143 default: = 'NaN' (nan)
DATASKEW (float) : 2588798/7862941 valid (2557235 distinct):
    range: -97.705 – 89.133
    5274143 default: = 'NaN' (nan)
DATAKURT (float) : 2588798/7862941 valid (2476249 distinct):
    range: -1.895 – 15025.729
    5274143 default: = 'NaN' (nan)
TOT_FLUX (double) : 2588501/7862941 valid (2587998 distinct):
    range: 92.807258 – 3369708603.501000
    5274440 default: = 0.000000 (0.000000)
AVG_FLUX (double) : 2588501/7862941 valid (2587997 distinct):
    range: 3.762054 – 7900.764445
    5274440 default: = 0.000000 (0.000000)
MEAN_FLD (double) : 2588501/7862941 valid (2587998 distinct):
    range: -7479.756846 – 7900.764445
    5274440 default: = 0.000000 (0.000000)
CROP_RAD (float) : 2588798/7862941 valid (3 distinct):
    492.0
    504.0
    480.0
    5274143 default: = 'NaN' (nan)
DATE (time) : 7756397/7862941 valid (631421 distinct):
    range: 2012-03-01T19:26Z – 2012-03-15T04:31Z
    106544 default: = 'NaN' (nan)
RUNTIME (time) : 2588798/7862941 valid (62463 distinct):
    range: 2000.03.23_20:49_UTC – 2011.05.23_20:40_UTC
    5274143 default: = 'NaN' (nan)
SOURCE (string) : 2588798/7862941 valid (1 distinct):
    prog:(null),level:(null)[-2147483648],series:(null)[-2147483648]
    5274143 default: = '' ()
BLDVER15 (string) : 2588798/7862941 valid (32 distinct):
    range: -40800 – 60100
    5274143 default: = '' ()
CALTBLS (string) : 2588798/7862941 valid (1 distinct):
    mdi.scale_corrections
    5274143 default: = '' ()
TBLXYUPD (time) : 2588798/7862941 valid (905 distinct):
    range: 2000.03.21_18:40:32_UTC – 2011.05.23_19:05:04_UTC
    5274143 default: = 'NaN' (nan)
XY_FROM (string) : 2588798/7862941 valid (1 distinct):
    SMOOTH
    5274143 default: = '' ()
XY_QUAL (int) : 2588678/7862941 valid (1 distinct):
    0
    5274263 default: = -2147483648 (-2147483648)
BFITZORG (float) : 2588793/7862941 valid (2542036 distinct):
    range: -20105.309 – 17149.422
    5274148 default: = 'NaN' (nan)
BLD_VERS (string) : 2588798/7862941 valid (1 distinct):
    V6R1X
    5274143 default: = '' ()
BLDVER18 (int) : 2588798/7862941 valid (1 distinct):
    -60102
    5274143 default: = -2147483648 (-2147483648)
HISTORY (string) : all 7862941 default: = '' ()
NOTE1 (string) : 2588798/7862941 valid (557460 distinct):
    range: Lev 1.8.2 created by fdmagcal on Fri Mar 2 00:00:14 2012. – Lev 1.8.2 created by fdmagcal on Wed Mar 7 23:59:59 2012.
    5274143 default: = '' ()
DPC (int) : 6538359/7862941 valid (6 distinct):
    range: 0x04c4b400 – 0x48470fc0
    1324582 default: = -2147483648 (0x80000000)
QUALITY (int) : 7862941/7862941 valid (64 distinct):
    range: 0x80000000 – 0x4000029c

Constant key(s):

CONTENT (string) : MDI Full Disk 01-m Magnetogram
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
CADENCE (float) : 1.0
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
SINRHOTB (string) : mdi.sinrho_table
T_REC_epoch (time) : 1977.01.01_00:33:13_TAI
T_REC_step (float) : 60.0
BUNIT (string) : Gauss
COMMENT (string) : Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO)
NOTE2 (string) : Magnetic Flat Field Correction per Ulrich et al. 2008
NOTE3 (string) : Ulrich 2008Version
INTERVAL (float) : 30.00

Special Notes

this page last modified 14 Oct 2020, 16:36-0700