ASTROSAT CZTI

Data Quality Report

Orbit 51279

Creation date: 2025-03-22T16:42:25.424059
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/AS1C07_001T01_9000006454_51279cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51279cztM0_level2_quad_clean.evt
Size (bytes)822,375,36088,058,880
Size784.3 MB 84.0 MB
Events in quadrant A6,016,043642,665
Events in quadrant B4,068,371708,872
Events in quadrant C14,824,221241,335
Events in quadrant D4,993,348587,557

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227792
B0170432
C0487333
D0198752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69712213.170277%
B69712313.313728%
C6970469367.331420%
D69703094.433286%

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 7881 6971 64 64 0.81% 0.92%
B 7881 6971 132 132 1.67% 1.89%
C 7880 6970 4722 4722 59.92% 67.75%
D 7880 6971 265 265 3.36% 3.80%

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 12 3 2022392 11286.69 711 694 179.1
A 9 160 371635 2070.88 711 694 179.1
A 12 194 234948 1307.79 711 694 179.1
B 5 185 695641 4587.9 717 691 151.5
B 10 247 96243 630.81 717 691 151.5
B 10 60 90437 592.48 717 691 151.5
C 4 12 10314343 84081.25 439 434 122.7
C 10 171 2291630 18678.33 439 434 122.7
C 1 45 151823 1234.16 439 434 122.7
D 3 12 747854 3910.67 680 655 191.1
D 8 176 450810 2356.01 680 655 191.1
D 10 181 264913 1383.07 680 655 191.1

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