ASTROSAT CZTI

Data Quality Report

Orbit 54655

Creation date: 2025-11-04T16:46:44.348315
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_066T07_9000006522_54655cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54655cztM0_level2_quad_clean.evt
Size (bytes)773,386,560134,046,720
Size737.6 MB 127.8 MB
Events in quadrant A4,967,651917,986
Events in quadrant B5,848,580955,330
Events in quadrant C5,033,758869,514
Events in quadrant D12,005,165624,990

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223410
B0247620
C0224880
D0426250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99651391.394882%
B99655005.017561%
C99651731.736076%
D9965250225.107878%

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 9965 9965 128 128 1.28% 1.28%
B 9965 9965 314 314 3.15% 3.15%
C 9965 9965 159 159 1.60% 1.60%
D 9965 9965 2120 2120 21.27% 21.27%

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 11 3 465775 1779.4 1057 1031 261.2
A 0 8 320814 1224.38 1057 1031 261.2
A 3 110 44237 165.43 1057 1031 261.2
B 2 249 1181899 5299.56 1027 989 222.8
B 5 172 274920 1229.32 1027 989 222.8
B 10 247 180526 805.71 1027 989 222.8
C 13 3 299094 1066.13 1022 1012 279.6
C 15 147 208888 743.5 1022 1012 279.6
C 12 250 104168 368.95 1022 1012 279.6
D 2 62 7975028 31165.01 898 858 255.9
D 5 173 81654 315.77 898 858 255.9
D 2 249 72915 281.62 898 858 255.9

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