ASTROSAT CZTI

Data Quality Report

Orbit 10539

Creation date: 2024-06-27T16:00:42.953552
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/AS1G07_079T01_9000001528_10539cztM0_level2.evt modeM0/AS1G07_079T01_9000001528_10539cztM0_level2_quad_clean.evt
Size (bytes)658,866,24095,201,280
Size628.3 MB 90.8 MB
Events in quadrant A6,620,802580,153
Events in quadrant B4,288,537613,094
Events in quadrant C3,228,052616,965
Events in quadrant D5,332,682575,072

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249013
B0176992
C0148542
D0210712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7139137019.190363%
B71393404.762572%
C7139530.742401%
D71391121.568847%

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 9244 7142 1095 1095 11.85% 15.33%
B 9244 7142 158 158 1.71% 2.21%
C 9244 7142 8 8 0.09% 0.11%
D 9244 7142 31 31 0.34% 0.43%

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 15 239 3769395 25543.72 729 714 147.5
A 13 251 23877 157.0 729 714 147.5
A 1 162 9486 59.46 729 714 147.5
B 4 239 871728 5476.67 832 812 159.0
B 0 214 65318 405.64 832 812 159.0
B 11 51 59415 368.52 832 812 159.0
C 14 234 47094 244.08 814 819 189.6
C 13 61 6138 28.05 814 819 189.6
C 9 68 5827 26.41 814 819 189.6
D 1 20 1114593 5731.75 801 780 194.3
D 2 16 604755 3108.09 801 780 194.3
D 8 195 263207 1350.46 801 780 194.3

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