ASTROSAT CZTI

Data Quality Report

Orbit 59288

Creation date: 2026-09-12T09:20:21.521633
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_59288cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59288cztM0_level2_quad_clean.evt
Size (bytes)853,165,440100,834,560
Size813.6 MB 96.2 MB
Events in quadrant A4,078,864752,448
Events in quadrant B5,954,559798,044
Events in quadrant C6,424,882650,257
Events in quadrant D14,499,031293,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183450
B0234360
C0248580
D0486510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80452342.908639%
B80466297.817549%
C8046101212.577678%
D8046475959.147402%

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 8045 8045 201 201 2.50% 2.50%
B 8046 8046 437 437 5.43% 5.43%
C 8046 8046 861 861 10.70% 10.70%
D 8046 8046 4077 4077 50.67% 50.67%

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 709794 3417.18 842 822 207.5
A 3 245 71804 342.12 842 822 207.5
A 3 14 15746 71.93 842 822 207.5
B 4 236 1207395 6763.1 835 805 178.4
B 5 236 661303 3702.18 835 805 178.4
B 5 185 325954 1822.5 835 805 178.4
C 15 198 2564465 11910.72 780 771 215.2
C 12 252 521104 2417.43 780 771 215.2
C 4 5 121357 560.23 780 771 215.2
D 12 110 11358350 63023.32 615 584 180.2
D 12 2 249841 1383.11 615 584 180.2
D 11 129 176961 978.7 615 584 180.2

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