ASTROSAT CZTI

Data Quality Report

Orbit 56003

Creation date: 2026-02-06T17:32:55.491803
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_066T02_9000006546_56003cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56003cztM0_level2_quad_clean.evt
Size (bytes)512,020,800110,825,280
Size488.3 MB 105.7 MB
Events in quadrant A4,981,735699,132
Events in quadrant B3,844,949778,124
Events in quadrant C3,914,484689,932
Events in quadrant D5,601,686641,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205460
B0170350
C0177170
D0220951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78623564.528110%
B7863410.521429%
C7863770.979270%
D78622623.332485%

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 7862 7862 335 335 4.26% 4.26%
B 7863 7863 12 12 0.15% 0.15%
C 7863 7863 77 77 0.98% 0.98%
D 7862 7862 299 299 3.80% 3.80%

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 0 8 878754 4341.49 823 803 202.2
A 12 115 440346 2173.55 823 803 202.2
A 4 249 177671 874.62 823 803 202.2
B 0 199 218098 1202.41 834 803 180.7
B 5 185 68850 376.54 834 803 180.7
B 0 213 62606 341.99 834 803 180.7
C 14 80 321651 1429.68 817 810 224.4
C 9 38 150833 668.51 817 810 224.4
C 13 3 104048 460.03 817 810 224.4
D 3 176 548572 2400.02 803 765 228.3
D 8 240 500721 2190.38 803 765 228.3
D 2 249 268432 1172.69 803 765 228.3

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