ASTROSAT CZTI

Data Quality Report

Orbit 58274

Creation date: 2026-07-06T05:01:45.736656
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_58274cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58274cztM0_level2_quad_clean.evt
Size (bytes)1,452,859,200241,689,600
Size1.4 GB 230.5 MB
Events in quadrant A10,672,6931,630,056
Events in quadrant B16,089,9981,458,580
Events in quadrant C8,402,3871,614,080
Events in quadrant D17,198,5891,353,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453613
B0608693
C0393003
D0638774

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183056403.496312%
B18306346318.917295%
C183061260.688299%
D18305209611.450423%

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 19705 18307 517 517 2.62% 2.82%
B 19706 18308 2076 2076 10.53% 11.34%
C 19706 18309 103 103 0.52% 0.56%
D 19705 18308 1843 1843 9.35% 10.07%

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 12 114 1308714 2803.06 1901 1861 466.2
A 0 12 627031 1340.92 1901 1861 466.2
A 7 160 521104 1113.72 1901 1861 466.2
B 6 255 4514234 12501.03 1695 1628 361.0
B 2 249 1801417 4985.86 1695 1628 361.0
B 3 238 1321436 3656.19 1695 1628 361.0
C 13 3 300341 573.62 1885 1868 520.3
C 6 223 199196 379.24 1885 1868 520.3
C 15 198 117995 223.18 1885 1868 520.3
D 12 110 7306022 14059.32 1801 1715 519.5
D 8 160 886240 1702.53 1801 1715 519.5
D 3 224 358904 687.52 1801 1715 519.5

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