ASTROSAT CZTI

Data Quality Report

Orbit 58939

Creation date: 2026-08-19T22:16:40.808277
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_004T07_9000006598_58939cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58939cztM0_level2_quad_clean.evt
Size (bytes)994,930,56081,334,080
Size948.8 MB 77.6 MB
Events in quadrant A8,750,797547,942
Events in quadrant B5,782,289693,681
Events in quadrant C4,948,267650,884
Events in quadrant D16,782,37761,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308360
B0220870
C0197963
D0547120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7295193326.497601%
B729678210.718202%
C72953915.359836%
D7295667991.555860%

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 7294 7294 1522 1522 20.87% 20.87%
B 7295 7295 635 635 8.70% 8.70%
C 7295 7295 335 335 4.59% 4.59%
D 7295 7295 6469 6469 88.68% 88.68%

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 14 238 3756698 21208.16 716 698 177.1
A 10 251 1697023 9578.26 716 698 177.1
A 0 24 284906 1604.77 716 698 177.1
B 4 171 1727122 10453.75 768 738 165.1
B 4 236 329255 1989.26 768 738 165.1
B 5 185 298220 1801.34 768 738 165.1
C 12 252 613240 2901.94 770 763 211.1
C 4 5 593715 2809.43 770 763 211.1
C 15 219 211524 998.59 770 763 211.1
D 12 110 13070931 114149.21 398 380 114.5
D 1 3 970458 8471.99 398 380 114.5
D 11 129 604890 5279.37 398 380 114.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct