ASTROSAT CZTI

Data Quality Report

Orbit 03494

Creation date: 2024-06-27T14:30:07.616077
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/AS1G05_245T01_9000000460_03494cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03494cztM0_level2_quad_clean.evt
Size (bytes)456,523,20069,598,080
Size435.4 MB 66.4 MB
Events in quadrant A3,445,252422,443
Events in quadrant B4,092,745407,571
Events in quadrant C3,034,933422,312
Events in quadrant D2,821,502412,155

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147741
B0164191
C0137281
D0134381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63362203.472222%
B63365328.396465%
C63361322.083333%
D6336991.562500%

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 6380 6336 52 52 0.82% 0.82%
B 6380 6336 219 219 3.43% 3.46%
C 6381 6337 24 24 0.38% 0.38%
D 6381 6337 16 16 0.25% 0.25%

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 0 50 567925 3692.49 736 718 153.6
A 0 118 19010 119.08 736 718 153.6
A 8 15 15447 95.89 736 718 153.6
B 4 81 897703 6121.74 732 712 146.5
B 15 204 291784 1986.49 732 712 146.5
B 15 85 29585 197.05 732 712 146.5
C 7 220 143516 839.61 721 725 170.1
C 9 54 20702 117.46 721 725 170.1
C 1 16 18828 106.45 721 725 170.1
D 13 223 59940 333.92 719 696 177.4
D 13 239 15707 84.6 719 696 177.4
D 10 172 12889 68.72 719 696 177.4

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
Veto Counter