ASTROSAT CZTI

Data Quality Report

Orbit 56294

Creation date: 2026-02-23T00:05:44.552968
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_049T01_9000006552_56294cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56294cztM0_level2_quad_clean.evt
Size (bytes)780,148,80085,567,680
Size744.0 MB 81.6 MB
Events in quadrant A14,970,972217,584
Events in quadrant B3,561,406699,682
Events in quadrant C4,718,618610,941
Events in quadrant D5,080,419571,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494142
B0158150
C0190580
D0198530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7051502871.309034%
B70511422.013899%
C70512844.027797%
D70522984.225752%

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 7050 7050 4904 4904 69.56% 69.56%
B 7051 7051 49 49 0.69% 0.69%
C 7051 7051 280 280 3.97% 3.97%
D 7052 7052 323 323 4.58% 4.58%

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 32 10221280 91686.61 440 429 111.5
A 7 64 885100 7935.98 440 429 111.5
A 4 206 706971 6338.07 440 429 111.5
B 5 185 229369 1468.41 731 707 155.7
B 0 213 110405 704.45 731 707 155.7
B 7 252 87235 555.66 731 707 155.7
C 13 3 718722 3700.79 703 697 194.0
C 12 252 663985 3418.67 703 697 194.0
C 5 250 258116 1326.77 703 697 194.0
D 2 249 731473 3657.34 703 673 199.8
D 8 129 634279 3170.93 703 673 199.8
D 2 120 215277 1074.0 703 673 199.8

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