ASTROSAT CZTI

Data Quality Report

Orbit 57969

Creation date: 2026-06-15T18:59:19.345631
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_031T01_9000006584_57969cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57969cztM0_level2_quad_clean.evt
Size (bytes)1,774,477,440208,535,040
Size1.7 GB 198.9 MB
Events in quadrant A21,353,1321,140,797
Events in quadrant B7,948,3281,615,705
Events in quadrant C12,658,3471,325,232
Events in quadrant D22,473,1721,109,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0746802
B0351732
C0490922
D0781498

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16260448527.583026%
B162593662.251061%
C1625916259.994465%
D16259309919.060213%

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 17055 16260 3462 3462 20.30% 21.29%
B 17054 16259 46 46 0.27% 0.28%
C 17054 16259 1297 1297 7.61% 7.98%
D 17055 16260 2742 2742 16.08% 16.86%

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 10 251 14726691 37643.3 1586 1547 391.2
A 3 245 131537 332.31 1586 1547 391.2
A 13 248 127180 321.17 1586 1547 391.2
B 10 128 342855 904.88 1759 1689 377.0
B 7 252 138473 362.79 1759 1689 377.0
B 10 247 125518 328.43 1759 1689 377.0
C 15 224 5193006 11487.58 1659 1643 451.9
C 12 252 467035 1029.83 1659 1643 451.9
C 15 208 203615 446.93 1659 1643 451.9
D 12 110 14994439 32924.77 1622 1553 455.4
D 8 240 319272 697.72 1622 1553 455.4
D 12 251 183489 399.54 1622 1553 455.4

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