ASTROSAT CZTI

Data Quality Report

Orbit 10858

Creation date: 2024-06-27T16:04:36.943376
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/AS1A03_086T01_9000001568_10858cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10858cztM0_level2_quad_clean.evt
Size (bytes)255,744,00029,116,800
Size243.9 MB 27.8 MB
Events in quadrant A2,657,997164,562
Events in quadrant B2,010,465171,385
Events in quadrant C1,351,299174,826
Events in quadrant D1,529,711166,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100511
B077831
C058291
D063981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285632711.449580%
B28561655.777311%
C285670.245098%
D2856301.050420%

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 2856 2856 181 181 6.34% 6.34%
B 2856 2856 98 98 3.43% 3.43%
C 2856 2856 0 0 0.00% 0.00%
D 2856 2856 19 19 0.67% 0.67%

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 8 5 1321250 18870.53 336 331 70.0
A 15 223 9962 137.59 336 331 70.0
A 11 29 6881 93.57 336 331 70.0
B 4 239 590899 8670.46 349 341 68.1
B 0 219 18577 267.74 349 341 68.1
B 0 231 11679 166.46 349 341 68.1
C 14 234 5484 63.63 345 348 80.7
C 13 61 2533 27.07 345 348 80.7
C 7 159 901 6.85 345 348 80.7
D 1 52 80090 934.79 343 333 85.3
D 7 71 53345 621.32 343 333 85.3
D 13 104 46008 535.33 343 333 85.3

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