ASTROSAT CZTI

Data Quality Report

Orbit 44642

Creation date: 2024-06-27T23:04:47.990875
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_072T01_9000006008_44642cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44642cztM0_level2_quad_clean.evt
Size (bytes)1,340,904,960278,976,960
Size1.2 GB 266.1 MB
Events in quadrant A14,361,6961,874,978
Events in quadrant B9,219,5481,939,208
Events in quadrant C11,012,4511,776,583
Events in quadrant D13,634,8551,599,710

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0577123
B0401723
C0456783
D0530463

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182126463.547112%
B182123551.949264%
C182127324.019328%
D1821212666.951461%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 19732 18215 251 251 1.27% 1.38%
B 19732 18215 101 101 0.51% 0.55%
C 19732 18215 554 554 2.81% 3.04%
D 19732 18215 905 905 4.59% 4.97%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 4972631 12236.2 1976 1936 406.2
A 15 223 962556 2364.73 1976 1936 406.2
A 13 248 423141 1036.87 1976 1936 406.2
B 4 171 452376 1165.43 1978 1916 386.5
B 0 183 221407 567.87 1978 1916 386.5
B 0 189 200585 513.99 1978 1916 386.5
C 12 2 2788847 6204.73 1921 1934 449.2
C 14 254 215275 474.98 1921 1934 449.2
C 3 233 188756 415.94 1921 1934 449.2
D 13 249 2178239 4558.34 1901 1842 477.5
D 1 52 2019435 4225.73 1901 1842 477.5
D 4 232 505630 1055.15 1901 1842 477.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter