ASTROSAT CZTI

Data Quality Report

Orbit 50981

Creation date: 2025-03-02T08:39:45.418854
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/AS1C07_001T02_9000006452_50981cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50981cztM0_level2_quad_clean.evt
Size (bytes)2,264,218,560226,987,200
Size2.1 GB 216.5 MB
Events in quadrant A12,995,3721,626,978
Events in quadrant B19,929,2071,550,394
Events in quadrant C20,712,5121,313,481
Events in quadrant D28,720,1621,075,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0516384
B0727324
C0748874
D0986214

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189359464.996039%
B18935328417.343544%
C18935395120.866121%
D18936598031.580059%

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 20230 18939 793 793 3.92% 4.19%
B 20230 18937 2159 2159 10.67% 11.40%
C 20230 18938 3193 3193 15.78% 16.86%
D 20231 18940 5735 5735 28.35% 30.28%

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 8 43 2213270 4553.29 1940 1889 485.7
A 4 3 714628 1467.55 1940 1889 485.7
A 3 130 432812 887.28 1940 1889 485.7
B 0 172 4698401 12120.93 1831 1762 387.5
B 12 32 4419518 11401.2 1831 1762 387.5
B 4 81 1810924 4669.03 1831 1762 387.5
C 0 177 2076450 4331.13 1715 1703 479.0
C 1 44 1899584 3961.91 1715 1703 479.0
C 13 3 1558593 3250.08 1715 1703 479.0
D 8 176 9133520 19752.85 1640 1588 462.3
D 7 39 2200605 4756.59 1640 1588 462.3
D 15 184 1837299 3970.74 1640 1588 462.3

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