ASTROSAT CZTI

Data Quality Report

Orbit 46986

Creation date: 2024-06-27T23:30:20.406188
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_46986cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46986cztM0_level2_quad_clean.evt
Size (bytes)869,639,040105,540,480
Size829.4 MB 100.7 MB
Events in quadrant A7,409,504817,621
Events in quadrant B15,624,598311,123
Events in quadrant C4,171,780790,705
Events in quadrant D4,389,222740,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270760
B0517200
C0180950
D0185796

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76932503.249708%
B7693551371.662550%
C76932773.600676%
D76931341.741843%

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 7693 7693 8 8 0.10% 0.10%
B 7693 7693 4414 4414 57.38% 57.38%
C 7693 7693 170 170 2.21% 2.21%
D 7693 7693 124 124 1.61% 1.61%

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 3940259 22233.17 852 834 177.2
A 9 191 70216 391.58 852 834 177.2
A 0 243 32590 179.22 852 834 177.2
B 3 112 12930513 103249.01 641 622 125.2
B 4 171 74327 588.56 641 622 125.2
B 0 200 20147 155.91 641 622 125.2
C 14 254 899733 4630.56 825 829 194.1
C 0 207 23355 116.04 825 829 194.1
C 12 250 14509 70.47 825 829 194.1
D 1 52 450675 2154.65 833 807 208.8
D 13 249 392088 1874.05 833 807 208.8
D 1 232 189891 905.62 833 807 208.8

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