ASTROSAT CZTI

Data Quality Report

Orbit 58225

Creation date: 2026-07-03T10:41:51.549389
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_044T03_9000006588_58225cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58225cztM0_level2_quad_clean.evt
Size (bytes)576,385,92087,995,520
Size549.7 MB 83.9 MB
Events in quadrant A2,927,166615,800
Events in quadrant B7,989,753548,160
Events in quadrant C3,568,600579,883
Events in quadrant D6,347,968468,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135391
B0283336
C0153291
D0233101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6475500.772201%
B6475136021.003861%
C64751862.872587%
D6475113917.590734%

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 6985 6475 6 6 0.09% 0.09%
B 6985 6476 1149 1149 16.45% 17.74%
C 6985 6476 130 130 1.86% 2.01%
D 6985 6475 1077 1077 15.42% 16.63%

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 13 248 37882 214.32 703 683 173.6
A 3 14 37008 209.28 703 683 173.6
A 12 114 25150 140.96 703 683 173.6
B 10 128 3040275 22006.8 645 621 138.1
B 5 185 816888 5909.69 645 621 138.1
B 2 249 563518 4075.32 645 621 138.1
C 1 241 592096 3176.67 678 672 186.2
C 12 249 73779 392.67 678 672 186.2
C 12 252 70274 373.85 678 672 186.2
D 12 110 2092716 11682.24 628 600 179.1
D 8 160 534067 2978.84 628 600 179.1
D 12 128 247434 1378.3 628 600 179.1

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