ASTROSAT CZTI

Data Quality Report

Orbit 52073

Creation date: 2025-05-14T19:55:22.656692
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_011T07_9000006470_52073cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52073cztM0_level2_quad_clean.evt
Size (bytes)923,667,84070,297,920
Size880.9 MB 67.0 MB
Events in quadrant A5,864,045503,849
Events in quadrant B6,837,466511,779
Events in quadrant C8,804,298413,679
Events in quadrant D12,208,550267,095

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216716
B0245621
C03043717
D04053519

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6178103716.785367%
B6181127620.643909%
C6177198532.135341%
D6177334454.136312%

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 7165 6179 914 914 12.76% 14.79%
B 7166 6181 1092 1092 15.24% 17.67%
C 7166 6181 1793 1793 25.02% 29.01%
D 7166 6180 3336 3336 46.55% 53.98%

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 4 95 1245640 8071.21 617 601 154.3
A 3 95 971087 6291.36 617 601 154.3
A 3 14 256703 1660.23 617 601 154.3
B 5 172 1742579 13872.05 587 567 125.6
B 10 128 1721733 13706.05 587 567 125.6
B 10 254 157060 1246.19 587 567 125.6
C 15 224 5060710 33582.39 542 536 150.7
C 15 254 249545 1652.57 542 536 150.7
C 15 215 241611 1599.92 542 536 150.7
D 15 94 3892748 27946.42 476 453 139.3
D 6 42 3787947 27193.95 476 453 139.3
D 13 187 762350 5470.37 476 453 139.3

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