ASTROSAT CZTI

Data Quality Report

Orbit 56582

Creation date: 2026-03-14T08:22:05.355074
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_083T06_9000006558_56582cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56582cztM0_level2_quad_clean.evt
Size (bytes)516,225,60098,000,640
Size492.3 MB 93.5 MB
Events in quadrant A6,043,547581,904
Events in quadrant B3,839,513708,614
Events in quadrant C4,241,754609,671
Events in quadrant D4,443,785582,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228682
B0164342
C0178222
D0182372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6952105215.132336%
B69522483.567319%
C69523214.617376%
D69522082.991945%

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 7752 6953 953 953 12.29% 13.71%
B 7752 6953 135 135 1.74% 1.94%
C 7752 6953 248 248 3.20% 3.57%
D 7752 6953 148 148 1.91% 2.13%

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 7 64 2697274 15911.62 687 670 169.5
A 4 249 410592 2418.79 687 670 169.5
A 0 8 106266 623.08 687 670 169.5
B 5 185 584270 3696.05 740 711 157.9
B 4 21 134235 845.69 740 711 157.9
B 10 247 72539 454.93 740 711 157.9
C 12 252 717331 3674.34 714 705 195.0
C 15 230 341195 1745.79 714 705 195.0
C 13 3 148298 756.75 714 705 195.0
D 6 239 912543 4549.03 711 677 200.5
D 8 129 167083 830.15 711 677 200.5
D 2 249 119888 594.71 711 677 200.5

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