ASTROSAT CZTI

Data Quality Report

Orbit 20220509_A10_058T14_9000005134_level2

Creation date: 2026-01-02T13:32:51.139934
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/AS1A10_058T14_9000005134cztM0_level2.fits modeM0/AS1A10_058T14_9000005134cztM0_level2_quad_clean.evt
Size (bytes)597,648,960600,909,120
Size570.0 MB 573.1 MB
Events in quadrant A3,719,3343,763,184
Events in quadrant B3,484,2203,679,169
Events in quadrant C3,556,5943,468,221
Events in quadrant D3,019,8702,970,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012880
B012880
C012880
D012880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01398220
B01541680
C01392740
D01943310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A629451130.179522%
B6294520113.194853%
C629457961.264596%
D6294551648.203988%

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 87000 62945 0 0 0.00% 0.00%
B 87000 62931 0 0 0.00% 0.00%
C 87000 62913 0 0 0.00% 0.00%
D 87000 62876 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 9 19 3062 8.93 971 915 240.5
A 7 110 2993 8.64 971 915 240.5
A 0 29 2952 8.47 971 915 240.5
B 2 9 3020 11.63 924 884 183.7
B 3 80 2775 10.29 924 884 183.7
B 2 8 2486 8.72 924 884 183.7
C 1 81 2858 8.18 940 884 241.3
C 1 80 2799 7.94 940 884 241.3
C 3 187 2401 6.29 940 884 241.3
D 6 62 2212 6.13 865 792 231.7
D 3 14 2201 6.08 865 792 231.7
D 10 189 2190 6.03 865 792 231.7

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