ASTROSAT CZTI

Data Quality Report

Orbit 55472

Creation date: 2025-12-29T14:58:37.307043
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_099T01_9000006536_55472cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55472cztM0_level2_quad_clean.evt
Size (bytes)450,993,60099,702,720
Size430.1 MB 95.1 MB
Events in quadrant A3,240,233662,726
Events in quadrant B3,860,498706,048
Events in quadrant C4,937,419568,742
Events in quadrant D4,105,081588,752

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01493634
B01661545
C020366230
D01732235

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7083991.397713%
B70831992.809544%
C706877210.922467%
D70831882.654243%

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 8859 7098 10 10 0.11% 0.14%
B 8859 7098 80 80 0.90% 1.13%
C 8859 7074 675 675 7.62% 9.54%
D 8859 7099 133 133 1.50% 1.87%

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 0 8 58421 305.63 761 739 188.7
A 15 32 56068 293.16 761 739 188.7
A 3 78 37902 196.91 761 739 188.7
B 0 171 372698 2312.91 750 721 160.8
B 5 172 367875 2282.92 750 721 160.8
B 0 183 52197 320.07 750 721 160.8
C 9 38 1760855 9264.03 682 675 190.0
C 13 3 402411 2114.38 682 675 190.0
C 12 252 45497 235.9 682 675 190.0
D 8 160 808348 3909.56 729 700 206.6
D 2 249 253527 1223.85 729 700 206.6
D 11 129 94114 452.19 729 700 206.6

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