ASTROSAT CZTI

Data Quality Report

Orbit 31082

Creation date: 2024-06-27T20:23:09.434051
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/AS1A10_109T01_9000004492_31082cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31082cztM0_level2_quad_clean.evt
Size (bytes)1,042,488,000187,934,400
Size994.2 MB 179.2 MB
Events in quadrant A6,293,9991,226,345
Events in quadrant B10,115,5761,216,520
Events in quadrant C6,721,8031,190,922
Events in quadrant D7,570,1251,167,062

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269862
B0395052
C0281792
D0308632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128941641.271909%
B128943812.954863%
C128943472.691174%
D128951260.977123%

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 13804 12896 1 1 0.01% 0.01%
B 13804 12896 4 4 0.03% 0.03%
C 13804 12896 14 14 0.10% 0.11%
D 13805 12897 27 27 0.20% 0.21%

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 21607 61.93 1626 1596 323.1
A 3 137 16610 46.47 1626 1596 323.1
A 12 96 14067 38.6 1626 1596 323.1
B 6 159 3576893 11614.41 1602 1564 307.8
B 0 183 163958 527.53 1602 1564 307.8
B 0 229 51889 163.48 1602 1564 307.8
C 14 238 251267 676.09 1569 1583 369.3
C 0 10 242598 652.62 1569 1583 369.3
C 10 22 72704 192.58 1569 1583 369.3
D 13 174 840303 2240.53 1580 1542 374.4
D 8 195 680547 1813.79 1580 1542 374.4
D 2 234 49294 127.56 1580 1542 374.4

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