ASTROSAT CZTI

Data Quality Report

Orbit 20231002_T05_158T01_9000005868_level2

Creation date: 2023-10-05T10:50:50.101967
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_158T01_9000005868cztM0_level2.fits modeM0/AS1T05_158T01_9000005868cztM0_level2_quad_clean.evt
Size (bytes)1,190,799,3601,246,654,080
Size1.1 GB 1.2 GB
Events in quadrant A7,046,9047,487,767
Events in quadrant B6,860,1527,555,953
Events in quadrant C7,015,1467,128,607
Events in quadrant D6,058,9686,502,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02999830
B02746520
C02716210
D02981030

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027080
B027080
C027080
D027080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13255316411.237995%
B1325536930.522810%
C1325511330.100339%
D13255320311.532217%

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 181566 132399 0 0 0.00% 0.00%
B 181566 132550 0 0 0.00% 0.00%
C 181566 132550 0 0 0.00% 0.00%
D 181566 132431 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 5708 8.6 1842 1718 463.9
A 0 29 5699 8.58 1842 1718 463.9
A 9 19 5688 8.56 1842 1718 463.9
B 2 9 6027 12.16 1806 1711 355.0
B 3 17 4815 8.74 1806 1711 355.0
B 2 8 4757 8.58 1806 1711 355.0
C 1 81 5663 8.34 1853 1722 472.6
C 1 80 5434 7.85 1853 1722 472.6
C 3 203 5377 7.73 1853 1722 472.6
D 7 3 4398 6.17 1734 1576 457.5
D 10 189 4370 6.11 1734 1576 457.5
D 4 160 4364 6.09 1734 1576 457.5

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