ASTROSAT CZTI

Data Quality Report

Orbit 59306

Creation date: 2026-09-13T15:27:12.491644
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_021T06_9000006606_59306cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59306cztM0_level2_quad_clean.evt
Size (bytes)1,294,943,040268,928,640
Size1.2 GB 256.5 MB
Events in quadrant A8,519,7391,777,550
Events in quadrant B12,723,6761,851,943
Events in quadrant C8,452,1221,714,180
Events in quadrant D16,772,6321,493,124

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397474
B0508346
C0395164
D0630594

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189502101.108179%
B1895012806.754617%
C18950740.390501%
D1895013066.891821%

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 20230 18951 90 90 0.44% 0.47%
B 20230 18951 999 999 4.94% 5.27%
C 20230 18954 45 45 0.22% 0.24%
D 20230 18952 1211 1211 5.99% 6.39%

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 7 64 481200 965.69 2027 1977 496.2
A 3 245 53837 104.5 2027 1977 496.2
A 15 233 46937 90.6 2027 1977 496.2
B 4 236 2746830 6568.27 1966 1890 417.9
B 5 236 1609644 3847.14 1966 1890 417.9
B 0 186 151883 358.91 1966 1890 417.9
C 12 252 241823 444.5 1972 1958 539.6
C 15 200 139456 254.8 1972 1958 539.6
C 14 96 107819 196.17 1972 1958 539.6
D 12 110 4280371 7897.33 1921 1832 541.8
D 11 129 2331349 4299.83 1921 1832 541.8
D 12 2 1788132 3297.15 1921 1832 541.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct