ASTROSAT CZTI

Data Quality Report

Orbit 08789

Creation date: 2024-06-27T15:37:15.496421
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/AS1G07_010T03_9000001224_08789cztM0_level2.evt modeM0/AS1G07_010T03_9000001224_08789cztM0_level2_quad_clean.evt
Size (bytes)629,015,04098,202,240
Size599.9 MB 93.7 MB
Events in quadrant A3,627,489632,333
Events in quadrant B3,489,092640,481
Events in quadrant C3,362,214631,410
Events in quadrant D8,076,264560,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156625
B0153574
C0151022
D02930810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7306781.067616%
B7306700.958117%
C7307230.314767%
D7305103614.182067%

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 8652 7309 7 7 0.08% 0.10%
B 8652 7309 3 3 0.03% 0.04%
C 8652 7310 0 0 0.00% 0.00%
D 8652 7308 725 725 8.38% 9.92%

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 8 5 165658 922.96 870 850 178.6
A 15 223 63544 351.1 870 850 178.6
A 15 239 19969 107.07 870 850 178.6
B 4 173 63136 370.87 871 846 168.0
B 5 255 25514 146.87 871 846 168.0
B 12 111 18815 106.99 871 846 168.0
C 14 67 18326 87.43 851 854 199.8
C 9 68 15853 75.05 851 854 199.8
C 1 16 8901 40.26 851 854 199.8
D 2 16 4683626 23912.12 805 786 195.8
D 2 152 146845 745.83 805 786 195.8
D 1 52 69193 349.31 805 786 195.8

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