ASTROSAT CZTI

Data Quality Report

Orbit 50673

Creation date: 2025-02-09T13:28:55.614226
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/AS1T05_241T01_9000006446_50673cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50673cztM0_level2_quad_clean.evt
Size (bytes)646,191,360102,576,960
Size616.3 MB 97.8 MB
Events in quadrant A5,722,806660,722
Events in quadrant B4,092,436744,014
Events in quadrant C7,841,328581,029
Events in quadrant D5,687,734602,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221190
B0175610
C0285010
D0224060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74313364.521599%
B74321161.560818%
C7432119716.106028%
D74323714.991927%

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 7431 7431 163 163 2.19% 2.19%
B 7432 7432 82 82 1.10% 1.10%
C 7432 7432 980 980 13.19% 13.19%
D 7432 7432 399 399 5.37% 5.37%

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 12 80 1099322 5810.05 768 749 189.1
A 10 253 407595 2151.7 768 749 189.1
A 8 246 208427 1098.35 768 749 189.1
B 0 229 436091 2628.12 779 752 165.6
B 10 247 148674 893.0 779 752 165.6
B 4 170 64161 382.8 779 752 165.6
C 15 174 3032674 15399.75 714 708 196.9
C 1 44 1017753 5165.7 714 708 196.9
C 13 3 209703 1061.51 714 708 196.9
D 15 185 611734 2959.64 743 716 206.5
D 7 110 566202 2739.09 743 716 206.5
D 2 249 285007 1377.05 743 716 206.5

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