ASTROSAT CZTI

Data Quality Report

Orbit 46981

Creation date: 2024-06-27T23:30:15.490367
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_071T08_9000006292_46981cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46981cztM0_level2_quad_clean.evt
Size (bytes)706,979,520111,286,080
Size674.2 MB 106.1 MB
Events in quadrant A6,958,308767,053
Events in quadrant B9,488,601678,048
Events in quadrant C3,371,963774,385
Events in quadrant D5,826,947676,925

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257512
B0330012
C0147142
D0219532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67843415.026533%
B6784172625.442217%
C67841382.034198%
D67846239.183373%

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 7914 6785 47 47 0.59% 0.69%
B 7914 6785 1088 1088 13.75% 16.04%
C 7914 6785 38 38 0.48% 0.56%
D 7914 6785 497 497 6.28% 7.32%

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 3773085 23027.68 793 776 163.8
A 9 191 49224 295.75 793 776 163.8
A 14 248 38031 227.42 793 776 163.8
B 3 112 5277829 36189.64 750 726 145.8
B 15 201 1132475 7761.38 750 726 145.8
B 4 171 58471 396.01 750 726 145.8
C 14 254 241776 1316.18 788 792 183.1
C 12 2 22727 119.8 788 792 183.1
C 3 233 16243 84.39 788 792 183.1
D 1 52 1705288 8877.98 771 747 192.0
D 13 249 893243 4648.5 771 747 192.0
D 2 249 126543 655.2 771 747 192.0

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