ASTROSAT CZTI

Data Quality Report

Orbit 56133

Creation date: 2026-02-12T03:33:44.817030
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_083T03_9000006548_56133cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56133cztM0_level2_quad_clean.evt
Size (bytes)746,717,76092,897,280
Size712.1 MB 88.6 MB
Events in quadrant A7,047,649595,519
Events in quadrant B5,284,801643,837
Events in quadrant C8,283,881524,080
Events in quadrant D6,420,866506,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263703
B0212441
C0300681
D0248651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A780080510.320513%
B78014255.448019%
C7801128716.497885%
D780185410.947314%

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 8087 8069 682 682 8.43% 8.45%
B 8088 8069 294 294 3.64% 3.64%
C 8088 8070 1091 1091 13.49% 13.52%
D 8088 8070 799 799 9.88% 9.90%

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 12 115 1718241 8736.0 791 773 196.6
A 3 14 1288065 6547.88 791 773 196.6
A 0 8 261630 1326.86 791 773 196.6
B 5 172 711686 4155.72 803 773 171.1
B 8 128 343229 2001.86 803 773 171.1
B 4 156 152555 887.26 803 773 171.1
C 9 38 1856257 9360.31 721 713 198.2
C 15 147 1823973 9197.45 721 713 198.2
C 15 148 1208632 6093.36 721 713 198.2
D 2 62 1919529 9232.44 731 698 207.8
D 8 129 273790 1313.98 731 698 207.8
D 2 249 252817 1213.07 731 698 207.8

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