ASTROSAT CZTI

Data Quality Report

Orbit 53344

Creation date: 2025-08-08T11:42:19.985059
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/AS1C09_011T08_9000006492_53344cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53344cztM0_level2_quad_clean.evt
Size (bytes)869,359,680101,779,200
Size829.1 MB 97.1 MB
Events in quadrant A6,695,141671,524
Events in quadrant B7,435,952690,548
Events in quadrant C12,154,489502,984
Events in quadrant D5,281,389664,691

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255603
B0276270
C0416490
D0216970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7934100012.603983%
B7935134116.899811%
C7935274934.643982%
D79353033.818526%

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 7934 7934 930 930 11.72% 11.72%
B 7935 7935 989 989 12.46% 12.46%
C 7935 7935 2378 2378 29.97% 29.97%
D 7935 7935 270 270 3.40% 3.40%

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 15 174 2841792 14607.86 784 765 194.5
A 12 80 416337 2136.77 784 765 194.5
A 4 249 254092 1302.55 784 765 194.5
B 2 249 2246867 13924.93 756 727 161.3
B 4 206 869724 5387.34 756 727 161.3
B 10 28 612081 3790.09 756 727 161.3
C 15 158 4270523 21715.62 710 704 196.6
C 15 224 2084860 10599.69 710 704 196.6
C 9 38 917588 4663.13 710 704 196.6
D 2 62 604144 2693.62 787 752 224.0
D 8 176 588381 2623.26 787 752 224.0
D 10 172 417062 1858.46 787 752 224.0

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