ASTROSAT CZTI

Data Quality Report

Orbit 17545

Creation date: 2024-06-27T17:37:49.717028
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/AS1T03_066T01_9000002600_17545cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17545cztM0_level2_quad_clean.evt
Size (bytes)519,278,40084,205,440
Size495.2 MB 80.3 MB
Events in quadrant A4,570,048518,699
Events in quadrant B3,506,080539,139
Events in quadrant C3,714,094521,560
Events in quadrant D3,490,143511,831

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177842
B0143922
C0149414
D0146032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65694516.865581%
B65692213.364287%
C65682033.090743%
D65682373.608404%

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 7514 6569 167 167 2.22% 2.54%
B 7514 6569 21 21 0.28% 0.32%
C 7513 6568 2 2 0.03% 0.03%
D 7513 6568 63 63 0.84% 0.96%

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 14 237 1386844 8268.22 825 805 167.6
A 15 174 12201 67.98 825 805 167.6
A 0 226 7244 38.41 825 805 167.6
B 10 245 161577 1013.41 828 806 158.6
B 0 244 56450 350.75 828 806 158.6
B 0 230 27245 166.66 828 806 158.6
C 3 233 403875 2167.45 801 804 186.0
C 14 238 123384 659.15 801 804 186.0
C 5 218 37331 196.42 801 804 186.0
D 5 222 214911 1087.39 816 792 196.9
D 13 189 109188 550.48 816 792 196.9
D 2 234 22728 111.4 816 792 196.9

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