ASTROSAT CZTI

Data Quality Report

Orbit 50949

Creation date: 2025-02-28T13:18:48.991032
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_9000006450_50949cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50949cztM0_level2_quad_clean.evt
Size (bytes)1,001,070,72094,104,000
Size954.7 MB 89.7 MB
Events in quadrant A12,846,732414,061
Events in quadrant B5,570,305763,914
Events in quadrant C7,715,586641,073
Events in quadrant D10,320,526486,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0435840
B0220330
C0284331
D0360370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7813354445.360297%
B78134245.426853%
C781283610.701485%
D7812224028.673835%

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 7813 7813 3115 3115 39.87% 39.87%
B 7813 7813 260 260 3.33% 3.33%
C 7812 7812 732 732 9.37% 9.37%
D 7812 7812 2065 2065 26.43% 26.43%

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 43 6474652 40850.8 622 605 158.5
A 7 206 1635623 10316.85 622 605 158.5
A 9 13 599019 3775.95 622 605 158.5
B 4 206 1021037 5966.7 808 780 171.0
B 12 3 351672 2052.1 808 780 171.0
B 10 247 283645 1654.26 808 780 171.0
C 15 147 1263312 5940.6 775 769 212.5
C 12 247 1006965 4734.42 775 769 212.5
C 13 3 463490 2177.23 775 769 212.5
D 15 184 4071092 21179.55 691 667 192.2
D 8 176 1234650 6420.75 691 667 192.2
D 10 181 336166 1745.69 691 667 192.2

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