ASTROSAT CZTI

Data Quality Report

Orbit 56039

Creation date: 2026-02-05T20:46:24.065324
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_083T03_9000006548_56039cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56039cztM0_level2_quad_clean.evt
Size (bytes)647,628,48089,588,160
Size617.6 MB 85.4 MB
Events in quadrant A11,320,288388,592
Events in quadrant B4,154,616673,902
Events in quadrant C3,445,926608,308
Events in quadrant D4,530,862573,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382332
B0171282
C0153582
D0181192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6716315346.947588%
B67173134.659818%
C67172083.096621%
D67172413.587911%

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 7721 6717 2596 2596 33.62% 38.65%
B 7722 6718 186 186 2.41% 2.77%
C 7722 6718 136 136 1.76% 2.02%
D 7722 6718 182 182 2.36% 2.71%

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 15 32 8414893 57844.3 582 567 145.5
A 7 64 341167 2341.46 582 567 145.5
A 12 115 109749 750.57 582 567 145.5
B 5 185 1097584 7279.0 703 679 150.7
B 0 199 76929 505.99 703 679 150.7
B 0 213 40440 263.85 703 679 150.7
C 15 199 439675 2296.76 689 683 191.1
C 13 3 125849 654.86 689 683 191.1
C 12 252 45851 236.31 689 683 191.1
D 11 129 950571 4799.88 692 661 197.9
D 14 52 181307 912.8 692 661 197.9
D 3 12 132517 666.27 692 661 197.9

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