ASTROSAT CZTI

Data Quality Report

Orbit 04194

Creation date: 2024-06-27T14:38:36.612748
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_240T01_9000000536_04194cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04194cztM0_level2_quad_clean.evt
Size (bytes)585,267,84063,207,360
Size558.2 MB 60.3 MB
Events in quadrant A5,610,456329,653
Events in quadrant B4,250,077394,273
Events in quadrant C3,939,191392,099
Events in quadrant D3,524,621383,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205652
B0163451
C0157841
D0146661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5911128321.705295%
B59114116.953138%
C59112123.586534%
D59112564.330908%

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 6962 5913 991 991 14.23% 16.76%
B 6962 5912 287 287 4.12% 4.85%
C 6962 5913 146 146 2.10% 2.47%
D 6962 5913 187 187 2.69% 3.16%

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 2936227 23424.66 614 599 125.3
A 12 247 145266 1154.36 614 599 125.3
A 0 199 105911 840.33 614 599 125.3
B 3 0 1369661 10242.28 688 671 133.7
B 8 3 105697 785.77 688 671 133.7
B 10 16 47390 349.53 688 671 133.7
C 9 144 1345046 8663.84 663 667 155.2
C 13 61 5403 30.52 663 667 155.2
C 12 4 3153 16.02 663 667 155.2
D 13 239 691246 4261.1 668 648 162.1
D 12 233 98186 601.82 668 648 162.1
D 12 110 98025 600.83 668 648 162.1

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