ASTROSAT CZTI

Data Quality Report

Orbit 57065

Creation date: 2026-04-15T20:20:39.613623
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_083T10_9000006566_57065cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57065cztM0_level2_quad_clean.evt
Size (bytes)458,455,680104,690,880
Size437.2 MB 99.8 MB
Events in quadrant A3,496,684682,581
Events in quadrant B3,351,111745,663
Events in quadrant C4,137,870659,848
Events in quadrant D5,421,402577,190

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158020
B0152591
C0172830
D0211010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72461181.628485%
B7246490.676235%
C7246991.366271%
D72466238.597847%

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 7246 7246 103 103 1.42% 1.42%
B 7246 7246 23 23 0.32% 0.32%
C 7246 7246 89 89 1.23% 1.23%
D 7246 7246 430 430 5.93% 5.93%

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 7 64 364786 1856.96 790 767 196.0
A 3 245 39082 195.46 790 767 196.0
A 4 3 25047 123.86 790 767 196.0
B 0 213 136820 805.36 784 754 169.0
B 8 234 47460 276.44 784 754 169.0
B 12 111 20828 118.81 784 754 169.0
C 12 254 440557 2104.07 769 760 209.0
C 12 252 177640 846.23 769 760 209.0
C 14 67 157445 749.61 769 760 209.0
D 12 33 991604 4740.11 747 710 209.0
D 15 142 859450 4107.93 747 710 209.0
D 12 251 204963 977.08 747 710 209.0

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