ASTROSAT CZTI

Data Quality Report

Orbit 22768

Creation date: 2024-06-27T18:45:26.574354
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/AS1C05_001T01_9000003366_22768cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22768cztM0_level2_quad_clean.evt
Size (bytes)525,948,480151,519,680
Size501.6 MB 144.5 MB
Events in quadrant A3,477,5061,065,749
Events in quadrant B3,520,2581,077,815
Events in quadrant C3,511,5671,022,392
Events in quadrant D4,993,495985,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144222
B0145222
C0146982
D0193343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62741031.641696%
B62741432.279248%
C62742093.331208%
D62733155.021521%

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 7579 6275 0 0 0.00% 0.00%
B 7579 6275 1 1 0.01% 0.02%
C 7579 6275 3 3 0.04% 0.05%
D 7578 6274 173 173 2.28% 2.76%

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 13 254 10974 57.72 901 886 174.8
A 0 226 7808 39.61 901 886 174.8
A 10 17 6718 33.37 901 886 174.8
B 12 111 17451 103.28 887 870 160.5
B 0 190 15798 92.98 887 870 160.5
B 11 111 15148 88.94 887 870 160.5
C 14 238 142156 733.16 855 863 192.7
C 10 22 30048 151.44 855 863 192.7
C 13 61 5935 26.32 855 863 192.7
D 1 52 1454189 7071.05 865 842 205.5
D 12 233 129649 626.69 865 842 205.5
D 12 33 52940 253.48 865 842 205.5

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