ASTROSAT CZTI

Data Quality Report

Orbit 31419

Creation date: 2024-06-27T20:28:16.046822
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/AS1T04_026T01_9000004560_31419cztM0_level2.evt modeM0/AS1T04_026T01_9000004560_31419cztM0_level2_quad_clean.evt
Size (bytes)585,593,280108,267,840
Size558.5 MB 103.3 MB
Events in quadrant A3,426,605705,745
Events in quadrant B5,487,705707,413
Events in quadrant C3,904,850681,067
Events in quadrant D4,413,956669,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151551
B0224051
C0164551
D0180211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7410941.268556%
B74111612.172446%
C74112483.346377%
D74111251.686682%

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 7750 7410 0 0 0.00% 0.00%
B 7751 7411 0 0 0.00% 0.00%
C 7751 7411 3 3 0.04% 0.04%
D 7751 7411 39 39 0.50% 0.53%

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 13 254 11956 61.8 888 869 179.4
A 3 137 9427 47.71 888 869 179.4
A 0 226 7378 36.28 888 869 179.4
B 6 159 1986909 11745.51 874 851 169.1
B 0 190 37966 219.5 874 851 169.1
B 12 111 21509 122.17 874 851 169.1
C 3 233 279504 1374.93 855 861 202.7
C 14 238 165950 814.61 855 861 202.7
C 10 22 69889 340.61 855 861 202.7
D 8 195 903329 4354.04 868 846 207.3
D 12 218 168841 810.49 868 846 207.3
D 2 250 38573 182.01 868 846 207.3

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