ASTROSAT CZTI

Data Quality Report

Orbit 57323

Creation date: 2026-05-03T04:33:30.220452
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_049T03_9000006570_57323cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57323cztM0_level2_quad_clean.evt
Size (bytes)580,985,28086,345,280
Size554.1 MB 82.3 MB
Events in quadrant A3,936,460589,959
Events in quadrant B3,454,459612,973
Events in quadrant C5,781,094511,763
Events in quadrant D7,815,784433,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164852
B0150772
C0219642
D0278892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6685871.301421%
B6686871.301226%
C66856069.065071%
D6685154823.156320%

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 7873 6954 88 88 1.12% 1.27%
B 7874 6955 26 26 0.33% 0.37%
C 7873 6954 553 553 7.02% 7.95%
D 7873 6954 1357 1357 17.24% 19.51%

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 0 12 1081358 6179.06 713 695 174.9
A 8 4 29526 164.85 713 695 174.9
A 3 245 24075 133.68 713 695 174.9
B 5 185 337195 2221.78 704 680 151.5
B 10 16 119742 786.09 704 680 151.5
B 7 252 80997 530.28 704 680 151.5
C 15 224 2351772 13017.77 662 656 180.6
C 14 254 366114 2023.49 662 656 180.6
C 1 12 324025 1790.44 662 656 180.6
D 3 224 3943096 22192.9 620 592 177.6
D 7 96 635284 3572.77 620 592 177.6
D 2 249 287049 1612.51 620 592 177.6

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