ASTROSAT CZTI

Data Quality Report

Orbit 26393

Creation date: 2024-06-27T19:28:30.709576
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/AS1A09_044T02_9000003814_26393cztM0_level2.evt modeM0/AS1A09_044T02_9000003814_26393cztM0_level2_quad_clean.evt
Size (bytes)604,313,28081,581,760
Size576.3 MB 77.8 MB
Events in quadrant A3,768,761498,700
Events in quadrant B3,978,697508,568
Events in quadrant C4,883,958471,727
Events in quadrant D5,150,067457,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161560
B0166640
C0193860
D0205330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76712763.597966%
B76712953.845652%
C76714826.283405%
D76715997.808630%

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 8081 7673 0 0 0.00% 0.00%
B 8081 7673 1 1 0.01% 0.01%
C 8081 7672 88 88 1.09% 1.15%
D 8081 7672 284 284 3.51% 3.70%

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 13 28256 138.68 970 948 196.9
A 13 254 12242 57.35 970 948 196.9
A 3 137 9626 44.07 970 948 196.9
B 0 230 71684 372.8 967 940 189.8
B 0 244 66610 346.06 967 940 189.8
B 0 245 51652 267.24 967 940 189.8
C 3 233 920930 4184.63 920 927 219.9
C 2 16 221512 1003.33 920 927 219.9
C 14 238 143964 650.6 920 927 219.9
D 1 52 987342 4454.51 916 893 221.4
D 7 80 607422 2738.91 916 893 221.4
D 12 233 66662 296.99 916 893 221.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter