ASTROSAT CZTI

Data Quality Report

Orbit 59259

Creation date: 2026-09-10T10:26:53.110004
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/AS1T05_271T01_9000006604_59259cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59259cztM0_level2_quad_clean.evt
Size (bytes)547,424,640135,184,320
Size522.1 MB 128.9 MB
Events in quadrant A4,804,064870,796
Events in quadrant B4,288,205947,390
Events in quadrant C4,997,493845,023
Events in quadrant D5,461,105793,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209410
B0195200
C0214650
D0225430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91811151.252587%
B9182951.034633%
C91821491.622740%
D9182850.925724%

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 9181 9181 60 60 0.65% 0.65%
B 9182 9182 19 19 0.21% 0.21%
C 9182 9182 113 113 1.23% 1.23%
D 9182 9182 41 41 0.45% 0.45%

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 405894 1648.52 1002 977 245.6
A 0 128 163563 661.93 1002 977 245.6
A 0 24 158911 642.99 1002 977 245.6
B 5 185 111999 513.08 1000 959 216.4
B 10 247 73276 334.15 1000 959 216.4
B 4 236 36605 164.71 1000 959 216.4
C 12 252 467914 1717.5 990 980 271.9
C 10 22 297172 1089.47 990 980 271.9
C 15 147 272810 999.86 990 980 271.9
D 12 110 1329683 4791.74 977 933 277.3
D 3 160 82077 292.62 977 933 277.3
D 2 249 74713 266.07 977 933 277.3

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