ASTROSAT CZTI

Data Quality Report

Orbit 06662

Creation date: 2024-06-27T15:10:01.256720
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/AS1A02_103T01_9000000904_06662cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06662cztM0_level2_quad_clean.evt
Size (bytes)623,240,640102,847,680
Size594.4 MB 98.1 MB
Events in quadrant A3,607,624655,661
Events in quadrant B3,752,126668,254
Events in quadrant C3,653,892656,923
Events in quadrant D7,330,728589,566

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162874
B0165413
C0165303
D0273173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78132713.468578%
B78132913.724562%
C78132102.687828%
D7813121715.576603%

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 7883 7815 11 11 0.14% 0.14%
B 7883 7815 21 21 0.27% 0.27%
C 7883 7815 2 2 0.03% 0.03%
D 7883 7815 741 741 9.40% 9.48%

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 14 111 39453 203.04 920 898 189.9
A 8 15 15984 79.45 920 898 189.9
A 0 226 8708 41.13 920 898 189.9
B 0 214 78727 434.01 927 903 179.3
B 4 81 27533 148.51 927 903 179.3
B 4 48 19588 104.2 927 903 179.3
C 9 247 138325 653.2 896 897 210.4
C 9 16 18123 81.88 896 897 210.4
C 13 61 6938 28.71 896 897 210.4
D 2 33 2188768 10540.37 842 814 207.6
D 8 195 1116084 5372.76 842 814 207.6
D 2 63 681396 3278.67 842 814 207.6

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