ASTROSAT CZTI

Data Quality Report

Orbit 20220412_A11_099T01_9000005068_level2

Creation date: 2026-01-02T10:33:59.824191
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/AS1A11_099T01_9000005068cztM0_level2.fits modeM0/AS1A11_099T01_9000005068cztM0_level2_quad_clean.evt
Size (bytes)1,583,478,7201,441,791,360
Size1.5 GB 1.3 GB
Events in quadrant A10,597,38210,415,411
Events in quadrant B6,787,9644,013,518
Events in quadrant C10,141,5609,749,240
Events in quadrant D8,042,5487,157,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06850
B06860
C06860
D06860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03975700
B010562400
C04290420
D07031400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036700
B036700
C036700
D036700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17985534621.924884%
B17985110030755.772278%
C17985349042.726671%
D1798553091717.189959%

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 256134 179591 0 0 0.00% 0.00%
B 256133 178243 0 0 0.00% 0.00%
C 256134 179796 0 0 0.00% 0.00%
D 256133 179007 0 0 0.00% 0.00%

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 0 29 8671 9.03 2770 2604 672.1
A 9 19 8639 8.98 2770 2604 672.1
A 7 110 8553 8.85 2770 2604 672.1
B 2 9 5902 12.17 1798 1720 343.5
B 3 80 5208 10.15 1798 1720 343.5
B 2 8 4781 8.91 1798 1720 343.5
C 1 81 8485 8.73 2686 2520 683.6
C 1 80 8301 8.46 2686 2520 683.6
C 3 203 8144 8.23 2686 2520 683.6
D 7 3 6016 6.46 2307 2105 605.5
D 10 113 5794 6.09 2307 2105 605.5
D 4 160 5765 6.04 2307 2105 605.5

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