ASTROSAT CZTI

Data Quality Report

Orbit 42001

Creation date: 2024-06-27T22:35:35.151734
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/AS1T05_132T01_9000005730_42001cztM0_level2.fits modeM0/AS1T05_132T01_9000005730_42001cztM0_level2_quad_clean.evt
Size (bytes)323,608,32054,866,880
Size308.6 MB 52.3 MB
Events in quadrant A1,967,485398,396
Events in quadrant B1,826,323406,473
Events in quadrant C1,670,336388,729
Events in quadrant D6,223,836204,568

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080671
B080981
C074881
D0210661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3720200.537634%
B3721381.021231%
C372110.026874%
D3721172846.439129%

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 3720 3720 12 12 0.32% 0.32%
B 3721 3721 29 29 0.78% 0.78%
C 3721 3721 0 0 0.00% 0.00%
D 3721 3721 1685 1685 45.28% 45.28%

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 372323 4613.32 389 381 80.6
A 15 222 53944 664.36 389 381 80.6
A 15 223 20762 252.79 389 381 80.6
B 5 255 90337 1204.77 385 375 74.7
B 3 112 85300 1137.32 385 375 74.7
B 0 190 79961 1065.82 385 375 74.7
C 15 214 157177 1743.8 381 384 89.9
C 15 111 18393 200.29 381 384 89.9
C 12 249 3500 34.66 381 384 89.9
D 12 233 4281586 57830.8 288 279 74.0
D 1 52 247930 3345.21 288 279 74.0
D 13 249 203976 2751.49 288 279 74.0

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