ASTROSAT CZTI

Data Quality Report

Orbit 58312

Creation date: 2026-07-08T17:16:32.751191
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_044T03_9000006588_58312cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58312cztM0_level2_quad_clean.evt
Size (bytes)633,617,28095,209,920
Size604.3 MB 90.8 MB
Events in quadrant A4,101,299673,711
Events in quadrant B7,666,603570,557
Events in quadrant C7,190,082513,942
Events in quadrant D3,931,694618,711

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174052
B0276322
C0266052
D0163292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72623244.461581%
B7262197727.223905%
C7262171123.561002%
D72621261.735059%

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 7692 7263 95 95 1.24% 1.31%
B 7692 7263 1177 1177 15.30% 16.21%
C 7692 7263 1507 1507 19.59% 20.75%
D 7692 7263 45 45 0.59% 0.62%

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 12 114 595340 3039.11 798 775 195.6
A 13 248 110116 558.9 798 775 195.6
A 7 160 106898 542.45 798 775 195.6
B 4 206 2422666 16246.16 697 672 149.1
B 3 238 1679248 11259.49 697 672 149.1
B 2 249 270959 1813.02 697 672 149.1
C 15 198 3979151 20863.44 697 691 190.7
C 15 204 165123 862.3 697 691 190.7
C 15 208 86407 449.5 697 691 190.7
D 11 129 484415 2194.38 780 746 220.4
D 7 222 85737 385.6 780 746 220.4
D 5 173 51496 230.25 780 746 220.4

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