ASTROSAT CZTI

Data Quality Report

Orbit 59301

Creation date: 2026-09-13T06:12:53.067703
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_021T06_9000006606_59301cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59301cztM0_level2_quad_clean.evt
Size (bytes)618,762,240101,442,240
Size590.1 MB 96.7 MB
Events in quadrant A3,105,845707,049
Events in quadrant B6,773,168652,041
Events in quadrant C3,330,844677,304
Events in quadrant D9,130,368529,188

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149911
B0252891
C0155081
D0321391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7270200.275103%
B7269129117.760352%
C7269570.784152%
D7270141519.463549%

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 7595 7271 9 9 0.12% 0.12%
B 7594 7270 1021 1021 13.44% 14.04%
C 7594 7270 29 29 0.38% 0.40%
D 7595 7270 1383 1383 18.21% 19.02%

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 10 251 47788 244.58 775 756 192.3
A 3 14 19823 99.15 775 756 192.3
A 13 254 9817 47.12 775 756 192.3
B 4 236 2577167 16820.5 714 688 153.2
B 5 236 1002825 6542.43 714 688 153.2
B 6 255 108678 705.01 714 688 153.2
C 12 252 270761 1275.1 766 757 211.8
C 4 5 26423 121.21 766 757 211.8
C 14 254 16004 72.0 766 757 211.8
D 11 129 3673334 18231.55 706 673 201.4
D 3 12 1052290 5220.36 706 673 201.4
D 12 2 650793 3227.28 706 673 201.4

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