ASTROSAT CZTI

Data Quality Report

Orbit 52244

Creation date: 2025-07-21T14:13:39.254485
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/AS1C09_011T08_9000006472_52244cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52244cztM0_level2_quad_clean.evt
Size (bytes)2,498,777,280218,983,680
Size2.3 GB 208.8 MB
Events in quadrant A17,218,1491,448,472
Events in quadrant B20,250,0211,601,803
Events in quadrant C26,830,7841,149,432
Events in quadrant D26,761,3151,138,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064261227
B073336171
C093250436
D092864416

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03811
C03811
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18721258713.818706%
B18720292815.641026%
C18699625933.472378%
D18695494326.440225%

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 19902 18773 2304 2304 11.58% 12.27%
B 19901 18762 2034 2034 10.22% 10.84%
C 19902 18766 5651 5651 28.39% 30.11%
D 19902 18754 5241 5241 26.33% 27.95%

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 79 4594906 10049.02 1827 1782 457.1
A 6 162 2011835 4397.67 1827 1782 457.1
A 15 174 983594 2148.05 1827 1782 457.1
B 10 254 3650993 9236.38 1858 1793 395.1
B 7 0 3525058 8917.63 1858 1793 395.1
B 4 206 1499285 3790.25 1858 1793 395.1
C 15 224 13663689 30666.08 1612 1597 445.5
C 9 38 2872233 6443.46 1612 1597 445.5
C 1 45 1432905 3212.73 1612 1597 445.5
D 6 42 11325959 23185.52 1715 1641 488.4
D 3 12 2689800 5503.76 1715 1641 488.4
D 8 176 1748211 3575.94 1715 1641 488.4

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