ASTROSAT CZTI

Data Quality Report

Orbit 59213

Creation date: 2026-09-07T12:06:52.449434
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/AS1T05_271T01_9000006604_59213cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59213cztM0_level2_quad_clean.evt
Size (bytes)725,592,96085,916,160
Size692.0 MB 81.9 MB
Events in quadrant A3,328,461681,808
Events in quadrant B3,267,589739,851
Events in quadrant C3,612,902658,064
Events in quadrant D16,102,64732,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152532
B0149272
C0159792
D0528332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70201121.595442%
B7020811.153846%
C70201341.908832%
D7020672295.754986%

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 7735 7021 70 70 0.90% 1.00%
B 7735 7021 23 23 0.30% 0.33%
C 7735 7021 107 107 1.38% 1.52%
D 7734 7019 6284 6284 81.25% 89.53%

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 14 238 193270 1023.71 764 746 188.1
A 10 251 85457 450.43 764 746 188.1
A 0 24 41814 218.37 764 746 188.1
B 4 201 103882 631.88 767 739 163.2
B 4 236 53104 320.8 767 739 163.2
B 10 31 22210 131.53 767 739 163.2
C 15 147 345785 1647.09 756 751 209.5
C 14 254 189992 903.38 756 751 209.5
C 12 252 33945 158.46 756 751 209.5
D 12 110 14299381 125753.88 397 381 113.7
D 3 12 75203 658.03 397 381 113.7
D 11 129 41786 364.14 397 381 113.7

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