ASTROSAT CZTI

Data Quality Report

Orbit 45913

Creation date: 2024-06-27T23:17:38.422288
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/AS1A13_071T03_9000006142_45913cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45913cztM0_level2_quad_clean.evt
Size (bytes)827,006,400110,021,760
Size788.7 MB 104.9 MB
Events in quadrant A6,257,890772,959
Events in quadrant B9,123,484675,008
Events in quadrant C5,174,178730,137
Events in quadrant D9,485,268636,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232900
B0323380
C0209495
D0334940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74241131.522091%
B7425142219.151515%
C74245527.435345%
D7424101513.671875%

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 7424 7424 2 2 0.03% 0.03%
B 7425 7425 799 799 10.76% 10.76%
C 7424 7424 392 392 5.28% 5.28%
D 7424 7424 874 874 11.77% 11.77%

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 10 83 3061792 17911.34 814 795 170.9
A 14 235 17468 97.56 814 795 170.9
A 13 254 12427 68.06 814 795 170.9
B 3 112 5636357 36993.13 769 743 152.3
B 12 18 153337 1001.65 769 743 152.3
B 8 234 90586 589.74 769 743 152.3
C 14 254 2050573 11083.99 783 786 184.9
C 12 2 36267 191.86 783 786 184.9
C 4 254 15535 79.75 783 786 184.9
D 11 241 3618956 18672.72 767 743 193.8
D 1 52 2235473 11532.9 767 743 193.8
D 13 249 270975 1394.6 767 743 193.8

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