ASTROSAT CZTI

Data Quality Report

Orbit 18911

Creation date: 2024-06-27T17:56:26.527054
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/AS1A05_163T01_9000002820_18911cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18911cztM0_level2_quad_clean.evt
Size (bytes)229,144,32015,321,600
Size218.5 MB 14.6 MB
Events in quadrant A2,873,48568,904
Events in quadrant B1,835,46487,867
Events in quadrant C820,46491,563
Events in quadrant D1,292,45289,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097232
B065870
C034690
D049530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170394955.725191%
B170335520.845567%
C170370.411039%
D17041036.044601%

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 1703 1701 650 650 38.17% 38.21%
B 1703 1703 227 227 13.33% 13.33%
C 1703 1703 0 0 0.00% 0.00%
D 1704 1704 77 77 4.52% 4.52%

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 14 235 2308825 75507.71 140 137 30.6
A 15 174 22977 747.0 140 137 30.6
A 13 254 1913 58.09 140 137 30.6
B 3 112 1035897 27604.27 184 180 37.5
B 7 220 27962 740.45 184 180 37.5
B 0 182 14468 380.81 184 180 37.5
C 14 238 30404 640.77 194 195 47.1
C 0 207 17241 361.56 194 195 47.1
C 3 233 13944 291.63 194 195 47.1
D 7 238 252377 5043.5 194 188 50.0
D 12 233 243261 4861.19 194 188 50.0
D 12 110 27238 540.97 194 188 50.0

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