ASTROSAT CZTI

Data Quality Report

Orbit 58488

Creation date: 2026-07-20T13:57:03.060463
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_044T04_9000006592_58488cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58488cztM0_level2_quad_clean.evt
Size (bytes)690,923,520118,059,840
Size658.9 MB 112.6 MB
Events in quadrant A4,814,913790,081
Events in quadrant B10,801,871665,694
Events in quadrant C4,855,905777,901
Events in quadrant D4,421,795731,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204541
B0382870
C0205880
D0195480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87715806.612701%
B8771250728.582830%
C87714284.879717%
D87713323.785201%

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 8771 8771 124 124 1.41% 1.41%
B 8771 8771 1597 1597 18.21% 18.21%
C 8771 8771 78 78 0.89% 0.89%
D 8771 8771 40 40 0.46% 0.46%

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 12 80 258939 1025.62 1029 999 251.5
A 7 64 250706 992.88 1029 999 251.5
A 10 17 99402 391.27 1029 999 251.5
B 5 172 6769539 32437.09 949 909 208.7
B 0 157 58169 274.41 949 909 208.7
B 2 249 54409 256.39 949 909 208.7
C 2 12 401605 1461.31 1009 997 274.1
C 12 252 174478 632.81 1009 997 274.1
C 6 223 112327 406.1 1009 997 274.1
D 3 12 105755 368.79 1013 969 284.1
D 2 153 102731 358.14 1013 969 284.1
D 8 240 73338 254.7 1013 969 284.1

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