ASTROSAT CZTI

Data Quality Report

Orbit 57398

Creation date: 2026-05-08T05:51:03.770495
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_102T01_9000006572_57398cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57398cztM0_level2_quad_clean.evt
Size (bytes)654,491,520105,091,200
Size624.2 MB 100.2 MB
Events in quadrant A3,858,180700,799
Events in quadrant B4,146,601757,715
Events in quadrant C9,994,329554,389
Events in quadrant D5,578,100586,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177881
B0185491
C0356131
D0225081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8375971.158209%
B83742142.555529%
C8374195223.310246%
D83744375.218534%

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 8887 8648 11 11 0.12% 0.13%
B 8886 8647 53 53 0.60% 0.61%
C 8886 8647 1447 1447 16.28% 16.73%
D 8886 8647 297 297 3.34% 3.43%

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 14 87071 382.87 923 900 225.1
A 0 12 72640 318.75 923 900 225.1
A 4 3 41432 180.09 923 900 225.1
B 7 252 160976 817.88 911 877 195.7
B 10 247 115641 586.28 911 877 195.7
B 5 185 79243 400.34 911 877 195.7
C 15 224 5216772 24093.04 793 782 216.5
C 6 223 458789 2115.57 793 782 216.5
C 14 246 378395 1744.22 793 782 216.5
D 7 96 1007750 4150.3 865 825 242.6
D 8 240 358853 1475.7 865 825 242.6
D 3 12 231738 951.77 865 825 242.6

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