ASTROSAT CZTI

Data Quality Report

Orbit 58726

Creation date: 2026-08-05T14:29:16.769070
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_004T06_9000006594_58726cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58726cztM0_level2_quad_clean.evt
Size (bytes)564,022,08099,054,720
Size537.9 MB 94.5 MB
Events in quadrant A3,868,814670,407
Events in quadrant B4,185,938712,111
Events in quadrant C3,313,615659,107
Events in quadrant D8,953,022459,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016056265
B017353255
C015327263
D032062557

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01502
B01502
C01504
D01504

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71622112.946104%
B71713434.783154%
C7173881.226823%
D7140199327.913165%

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 8950 7223 77 77 0.86% 1.07%
B 8930 7218 154 154 1.72% 2.13%
C 8957 7226 7 7 0.08% 0.10%
D 8921 7201 1926 1926 21.59% 26.75%

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 3 14 558751 2835.65 804 783 196.8
A 15 233 91794 462.53 804 783 196.8
A 10 17 68051 341.86 804 783 196.8
B 6 255 469240 2772.69 782 751 169.0
B 5 172 216080 1274.4 782 751 169.0
B 8 234 150325 885.23 782 751 169.0
C 14 254 58917 271.99 785 778 213.8
C 12 252 58016 267.78 785 778 213.8
C 5 63 30287 138.05 785 778 213.8
D 11 129 4917324 25612.03 675 644 192.0
D 8 160 1220892 6356.53 675 644 192.0
D 5 173 39729 203.6 675 644 192.0

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