ASTROSAT CZTI

Data Quality Report

Orbit 20230524_T05_105T01_9000005662_level2

Creation date: 2023-05-26T10:45:46.649726
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/AS1T05_105T01_9000005662cztM0_level2.fits modeM0/AS1T05_105T01_9000005662cztM0_level2_quad_clean.evt
Size (bytes)389,442,240381,107,520
Size371.4 MB 363.5 MB
Events in quadrant A2,363,2802,254,907
Events in quadrant B2,277,4662,282,975
Events in quadrant C2,274,6862,128,162
Events in quadrant D1,888,5101,887,267

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670
B01670
C01670
D01670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08880
B08880
C08880
D08880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940030
B0907060
C0966270
D01490490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A435311370.314718%
B435313690.847672%
C4353112642.903678%
D4353142649.795318%

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 59994 43531 0 0 0.00% 0.00%
B 59994 43530 0 0 0.00% 0.00%
C 59988 43351 0 0 0.00% 0.00%
D 59994 43482 0 0 0.00% 0.00%

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 7 110 2009 9.16 615 577 156.3
A 0 29 1904 8.49 615 577 156.3
A 9 19 1841 8.09 615 577 156.3
B 2 9 1953 11.63 601 571 118.8
B 3 80 1681 9.34 601 571 118.8
B 2 8 1566 8.38 601 571 118.8
C 1 81 1961 9.03 600 561 155.0
C 1 80 1892 8.58 600 561 155.0
C 3 202 1772 7.81 600 561 155.0
D 7 3 1418 6.34 540 491 146.1
D 6 83 1373 6.04 540 491 146.1
D 4 160 1365 5.98 540 491 146.1

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