ASTROSAT CZTI

Data Quality Report

Orbit 53271

Creation date: 2025-08-04T10:58:09.063216
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_53271cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53271cztM0_level2_quad_clean.evt
Size (bytes)775,321,92091,336,320
Size739.4 MB 87.1 MB
Events in quadrant A5,011,707640,997
Events in quadrant B6,869,465633,385
Events in quadrant C12,229,643414,071
Events in quadrant D4,044,335585,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198180
B0253200
C0412420
D0173690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70413024.289163%
B704290712.879864%
C7042289341.082079%
D70422123.010508%

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 7041 7041 243 243 3.45% 3.45%
B 7042 7042 671 671 9.53% 9.53%
C 7042 7042 2745 2745 38.98% 38.98%
D 7042 7042 211 211 3.00% 3.00%

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 3 27 1418796 8007.41 718 700 177.1
A 3 62 259405 1460.8 718 700 177.1
A 4 249 197986 1113.99 718 700 177.1
B 10 254 2540929 17045.01 697 671 149.0
B 2 249 784931 5262.35 697 671 149.0
B 4 81 419986 2813.58 697 671 149.0
C 10 22 5326322 32249.07 604 597 165.1
C 15 224 1750987 10599.21 604 597 165.1
C 5 10 1148468 6950.75 604 597 165.1
D 3 12 332899 1676.03 694 662 198.2
D 12 128 280403 1411.2 694 662 198.2
D 1 0 273379 1375.77 694 662 198.2

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