ASTROSAT CZTI

Data Quality Report

Orbit 18344

Creation date: 2024-06-27T17:48:38.162120
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/AS1A06_006T01_9000002720_18344cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18344cztM0_level2_quad_clean.evt
Size (bytes)488,640,96096,822,720
Size466.0 MB 92.3 MB
Events in quadrant A3,415,749618,368
Events in quadrant B3,610,387619,537
Events in quadrant C3,427,293607,406
Events in quadrant D3,866,751596,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147491
B0151351
C0147191
D0161261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70471311.858947%
B70471462.071804%
C70471572.227898%
D70471682.383993%

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 7272 7048 16 16 0.22% 0.23%
B 7272 7048 10 10 0.14% 0.14%
C 7272 7048 6 6 0.08% 0.09%
D 7272 7048 86 86 1.18% 1.22%

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 15 174 65099 362.07 864 844 177.5
A 4 2 27171 148.35 864 844 177.5
A 0 226 7607 38.11 864 844 177.5
B 0 244 62664 372.29 863 842 166.1
B 3 64 46632 275.75 863 842 166.1
B 4 216 26645 155.39 863 842 166.1
C 14 238 125973 641.03 826 830 195.2
C 0 207 58783 296.86 826 830 195.2
C 3 233 24500 121.25 826 830 195.2
D 1 52 216600 1045.52 843 818 206.4
D 2 33 177432 855.74 843 818 206.4
D 12 110 82776 397.11 843 818 206.4

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