ASTROSAT CZTI

Data Quality Report

Orbit 58474

Creation date: 2026-07-19T15:15:22.615979
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_044T04_9000006592_58474cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58474cztM0_level2_quad_clean.evt
Size (bytes)490,628,160120,839,040
Size467.9 MB 115.2 MB
Events in quadrant A4,006,599791,073
Events in quadrant B5,168,215817,058
Events in quadrant C4,098,474761,052
Events in quadrant D4,241,392711,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178790
B0210140
C0181430
D0184760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8317861.034027%
B83185396.479923%
C8318630.757394%
D8318650.781438%

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 8317 8317 25 25 0.30% 0.30%
B 8318 8318 299 299 3.59% 3.59%
C 8318 8318 40 40 0.48% 0.48%
D 8318 8318 49 49 0.59% 0.59%

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 17 215012 914.77 946 921 234.0
A 12 80 29211 120.88 946 921 234.0
A 2 143 25008 102.92 946 921 234.0
B 2 249 1011084 5164.47 915 879 195.6
B 5 172 231738 1180.22 915 879 195.6
B 10 247 144262 733.02 915 879 195.6
C 5 10 197958 788.75 918 907 249.8
C 12 252 72891 288.13 918 907 249.8
C 14 245 56347 221.91 918 907 249.8
D 8 240 345236 1342.74 910 870 256.5
D 3 12 99051 382.82 910 870 256.5
D 5 113 79893 308.12 910 870 256.5

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