ASTROSAT CZTI

Data Quality Report

Orbit 56700

Creation date: 2026-03-22T06:52:25.705778
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_083T06_9000006558_56700cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56700cztM0_level2_quad_clean.evt
Size (bytes)569,016,000110,232,000
Size542.7 MB 105.1 MB
Events in quadrant A4,865,196734,787
Events in quadrant B3,767,822802,009
Events in quadrant C7,893,178573,745
Events in quadrant D3,912,059668,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204931
B0173851
C0293901
D0178411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80373304.106010%
B80371672.077890%
C8038164120.415526%
D8038730.908186%

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 8502 8037 227 227 2.67% 2.82%
B 8502 8038 34 34 0.40% 0.42%
C 8503 8039 1352 1352 15.90% 16.82%
D 8503 8039 50 50 0.59% 0.62%

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 8 26 614829 2950.47 844 822 208.1
A 0 8 530076 2543.21 844 822 208.1
A 3 62 328342 1573.82 844 822 208.1
B 10 247 147973 801.18 851 819 183.7
B 4 21 57672 309.53 851 819 183.7
B 10 16 48899 261.77 851 819 183.7
C 13 3 2336128 11548.16 740 731 202.2
C 15 230 2038468 10076.28 740 731 202.2
C 1 28 209857 1034.09 740 731 202.2
D 2 249 301469 1309.9 825 787 229.5
D 5 173 68273 294.0 825 787 229.5
D 2 236 56006 240.56 825 787 229.5

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