ASTROSAT CZTI

Data Quality Report

Orbit 59370

Creation date: 2026-09-17T21:09:32.868497
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_033T01_9000006608_59370cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59370cztM0_level2_quad_clean.evt
Size (bytes)507,530,880102,994,560
Size484.0 MB 98.2 MB
Events in quadrant A3,362,342701,085
Events in quadrant B3,914,640749,711
Events in quadrant C3,550,123673,777
Events in quadrant D7,429,587518,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146962
B0160602
C0152282
D0268212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68182022.962746%
B68183314.854796%
C68182113.094749%
D6818158623.261954%

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 9068 6818 10 10 0.11% 0.15%
B 9068 6818 90 90 0.99% 1.32%
C 9068 6818 59 59 0.65% 0.87%
D 9068 6818 1395 1395 15.38% 20.46%

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 15 233 68073 342.79 812 791 196.3
A 14 238 54102 271.61 812 791 196.3
A 10 251 41158 205.66 812 791 196.3
B 5 185 233475 1374.02 793 762 169.4
B 4 201 145960 857.3 793 762 169.4
B 4 236 113909 668.06 793 762 169.4
C 2 12 210297 963.07 793 785 217.5
C 12 252 111049 506.85 793 785 217.5
C 14 254 42977 193.95 793 785 217.5
D 12 110 3809419 18188.59 751 717 209.4
D 1 27 277340 1321.02 751 717 209.4
D 3 12 109001 517.11 751 717 209.4

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