ASTROSAT CZTI

Data Quality Report

Orbit 50774

Creation date: 2025-02-17T08:38:13.009760
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_001T01_9000006450_50774cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50774cztM0_level2_quad_clean.evt
Size (bytes)932,791,680115,153,920
Size889.6 MB 109.8 MB
Events in quadrant A5,729,020789,790
Events in quadrant B4,429,393884,786
Events in quadrant C11,401,603623,424
Events in quadrant D12,295,095582,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232200
B01978411
C0399682
D0426720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87223734.276542%
B87201141.307339%
C8722226725.991745%
D8722219025.108920%

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 8722 8722 202 202 2.32% 2.32%
B 8723 8721 44 44 0.50% 0.50%
C 8722 8722 1484 1484 17.01% 17.01%
D 8722 8722 1552 1552 17.79% 17.79%

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 14 254 315147 1377.89 917 891 228.1
A 12 250 298800 1306.21 917 891 228.1
A 3 46 174188 759.84 917 891 228.1
B 4 206 94854 465.39 935 900 201.9
B 6 51 80762 395.59 935 900 201.9
B 8 128 70922 346.85 935 900 201.9
C 4 5 2327916 9972.97 834 827 233.3
C 5 10 1597417 6842.34 834 827 233.3
C 4 210 1282032 5490.73 834 827 233.3
D 8 242 3102662 13607.1 819 791 228.0
D 15 93 1002557 4394.48 819 791 228.0
D 8 241 697798 3057.59 819 791 228.0

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