ASTROSAT CZTI

Data Quality Report

Orbit 20220708_A11_049T04_9000005230_level2

Creation date: 2026-01-03T16:28:25.524904
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/AS1A11_049T04_9000005230cztM0_level2.fits modeM0/AS1A11_049T04_9000005230cztM0_level2_quad_clean.evt
Size (bytes)525,879,360509,319,360
Size501.5 MB 485.7 MB
Events in quadrant A3,264,4523,157,371
Events in quadrant B3,087,7483,073,355
Events in quadrant C3,129,4782,895,253
Events in quadrant D2,672,3742,526,578

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01153540
B01213390
C01285400
D01653090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02010
B02010
C01810
D01810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011220
B011220
C011220
D011220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A549711280.232850%
B549716611.202452%
C5497113702.492223%
D5497135426.443397%

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 75017 54970 0 0 0.00% 0.00%
B 75017 54955 0 0 0.00% 0.00%
C 75017 54960 0 0 0.00% 0.00%
D 75017 54931 0 0 0.00% 0.00%

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 9 19 2692 8.85 852 799 214.0
A 7 110 2604 8.44 852 799 214.0
A 0 29 2501 7.95 852 799 214.0
B 2 9 2650 11.46 819 783 162.9
B 3 80 2355 9.65 819 783 162.9
B 2 8 2192 8.65 819 783 162.9
C 1 81 2615 8.61 826 774 213.9
C 1 80 2555 8.33 826 774 213.9
C 3 202 2449 7.83 826 774 213.9
D 7 3 1944 6.13 765 700 202.9
D 4 160 1926 6.04 765 700 202.9
D 10 189 1922 6.02 765 700 202.9

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