ASTROSAT CZTI

Data Quality Report

Orbit 51425

Creation date: 2025-04-01T05:13:23.011603
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/AS1A13_090T01_9000006458_51425cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51425cztM0_level2_quad_clean.evt
Size (bytes)717,384,96093,919,680
Size684.2 MB 89.6 MB
Events in quadrant A7,467,544593,558
Events in quadrant B5,128,659682,373
Events in quadrant C9,055,455493,042
Events in quadrant D4,363,556588,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270252
B0200263
C0317712
D0180292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697898814.158785%
B69775668.112369%
C6977183826.343701%
D69772353.368210%

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 7723 6979 719 719 9.31% 10.30%
B 7722 6978 328 328 4.25% 4.70%
C 7721 6976 1547 1547 20.04% 22.18%
D 7722 6978 170 170 2.20% 2.44%

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 7 64 1825174 10410.6 713 694 175.3
A 12 3 1675594 9557.09 713 694 175.3
A 15 174 216114 1229.2 713 694 175.3
B 5 172 1001462 6339.28 738 713 157.9
B 5 185 562104 3556.15 738 713 157.9
B 8 128 79739 500.59 738 713 157.9
C 4 12 3690970 20736.84 649 644 178.0
C 15 179 769284 4319.18 649 644 178.0
C 10 171 681169 3824.04 649 644 178.0
D 8 176 418480 2058.22 722 696 203.0
D 11 176 403054 1982.22 722 696 203.0
D 0 129 158923 779.51 722 696 203.0

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