ASTROSAT CZTI

Data Quality Report

Orbit 59321

Creation date: 2026-09-14T15:47:05.525647
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_59321cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59321cztM0_level2_quad_clean.evt
Size (bytes)2,061,878,400356,662,080
Size1.9 GB 340.1 MB
Events in quadrant A14,757,4922,355,732
Events in quadrant B19,241,5692,477,615
Events in quadrant C11,854,4082,327,613
Events in quadrant D28,484,1541,869,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0628103
B0751173
C0550023
D01028453

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05200
B05200
C05200
D05200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2570113485.244932%
B25702264110.275465%
C257024201.634114%
D25702449417.485021%

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 27311 25704 1114 1114 4.08% 4.33%
B 27312 25705 1904 1904 6.97% 7.41%
C 27312 25705 108 108 0.40% 0.42%
D 27312 25705 4134 4134 15.14% 16.08%

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 2316240 3495.09 2722 2657 662.0
A 15 233 1669946 2518.74 2722 2657 662.0
A 3 245 59181 85.39 2722 2657 662.0
B 4 236 5366671 9543.61 2666 2564 562.1
B 4 171 1697104 3014.86 2666 2564 562.1
B 5 236 657503 1165.24 2666 2564 562.1
C 15 198 742207 1012.56 2693 2667 730.4
C 12 252 158865 213.86 2693 2667 730.4
C 4 5 67258 88.44 2693 2667 730.4
D 12 110 15182724 21055.04 2541 2421 721.0
D 11 129 1383429 1915.45 2541 2421 721.0
D 12 2 854703 1182.11 2541 2421 721.0

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