ASTROSAT CZTI

Data Quality Report

Orbit 57064

Creation date: 2026-04-16T12:22:41.759895
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/AS1A14_083T10_9000006566_57064cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57064cztM0_level2_quad_clean.evt
Size (bytes)476,159,040107,438,400
Size454.1 MB 102.5 MB
Events in quadrant A3,201,445698,801
Events in quadrant B3,334,259754,722
Events in quadrant C4,441,413667,816
Events in quadrant D6,075,635618,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150410
B0152740
C0181943
D0231240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A737980.108416%
B7380180.243902%
C73791111.504269%
D73802773.753388%

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 7379 7379 6 6 0.08% 0.08%
B 7380 7380 6 6 0.08% 0.08%
C 7380 7380 103 103 1.40% 1.40%
D 7380 7380 291 291 3.94% 3.94%

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 3 245 48358 241.55 797 774 197.0
A 4 3 25721 126.64 797 774 197.0
A 10 251 24293 119.39 797 774 197.0
B 8 234 56253 324.99 787 754 170.8
B 0 213 45081 259.57 787 754 170.8
B 0 245 40173 230.83 787 754 170.8
C 12 254 389529 1857.29 770 763 209.3
C 6 223 287973 1372.11 770 763 209.3
C 1 16 253782 1208.77 770 763 209.3
D 12 33 1739308 8056.92 764 728 215.8
D 15 142 490233 2268.46 764 728 215.8
D 7 96 228578 1055.9 764 728 215.8

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