ASTROSAT CZTI

Data Quality Report

Orbit 56109

Creation date: 2026-02-10T14:14:54.478427
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_083T03_9000006548_56109cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56109cztM0_level2_quad_clean.evt
Size (bytes)1,465,070,400250,007,040
Size1.4 GB 238.4 MB
Events in quadrant A17,308,3011,497,924
Events in quadrant B9,571,2261,819,358
Events in quadrant C14,484,5971,472,902
Events in quadrant D11,416,8271,484,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0646024
B0416634
C0566374
D0475484

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18769232612.392775%
B187694192.232404%
C18770192210.239744%
D187706553.489611%

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 20394 18772 1868 1868 9.16% 9.95%
B 20394 18772 47 47 0.23% 0.25%
C 20395 18772 1260 1260 6.18% 6.71%
D 20395 18773 425 425 2.08% 2.26%

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 5136581 10879.19 1913 1861 472.0
A 15 32 1418583 3001.68 1913 1861 472.0
A 12 115 1200849 2540.36 1913 1861 472.0
B 9 254 819707 1963.51 1967 1896 416.5
B 10 247 256478 611.23 1967 1896 416.5
B 0 199 171869 408.09 1967 1896 416.5
C 12 254 5932843 11714.1 1860 1842 506.3
C 12 252 756785 1491.06 1860 1842 506.3
C 13 3 229772 450.18 1860 1842 506.3
D 8 240 1343944 2505.01 1905 1819 535.8
D 11 129 1140613 2125.5 1905 1819 535.8
D 2 249 359209 667.05 1905 1819 535.8

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