ASTROSAT CZTI

Data Quality Report

Orbit 21551

Creation date: 2024-06-27T18:29:09.961333
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_166T01_9000003192_21551cztM0_level2.evt modeM0/AS1A05_166T01_9000003192_21551cztM0_level2_quad_clean.evt
Size (bytes)484,899,84072,512,640
Size462.4 MB 69.2 MB
Events in quadrant A3,369,512442,200
Events in quadrant B3,494,494449,762
Events in quadrant C3,427,267442,421
Events in quadrant D3,967,956422,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137962
B0142482
C0140562
D0159142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6278390.621217%
B6278671.067219%
C6278941.497292%
D6278861.369863%

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 7598 6279 0 0 0.00% 0.00%
B 7598 6279 5 5 0.07% 0.08%
C 7598 6279 0 0 0.00% 0.00%
D 7598 6279 61 61 0.80% 0.97%

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 4 2 41521 239.12 864 849 170.1
A 13 254 9667 51.84 864 849 170.1
A 0 226 7644 39.95 864 849 170.1
B 3 64 45990 287.21 863 846 157.2
B 0 230 35529 220.65 863 846 157.2
B 12 111 17989 109.06 863 846 157.2
C 14 238 137112 713.46 843 855 191.0
C 13 61 5910 26.47 843 855 191.0
C 3 233 4502 19.1 843 855 191.0
D 1 52 636762 3116.58 844 820 204.1
D 7 38 64768 313.39 844 820 204.1
D 14 35 30804 146.94 844 820 204.1

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