ASTROSAT CZTI

Data Quality Report

Orbit 19974

Creation date: 2024-06-27T18:09:36.126087
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/AS1C04_005T01_9000002976_19974cztM0_level2.evt modeM0/AS1C04_005T01_9000002976_19974cztM0_level2_quad_clean.evt
Size (bytes)839,514,24058,561,920
Size800.6 MB 55.8 MB
Events in quadrant A13,432,787165,338
Events in quadrant B3,857,301402,568
Events in quadrant C3,876,142380,881
Events in quadrant D3,832,446383,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442697
B0156662
C0157602
D0155262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295551387.577442%
B6295881.397935%
C62951312.081017%
D6296580.921220%

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 7654 6294 4311 4311 56.32% 68.49%
B 7655 6295 25 25 0.33% 0.40%
C 7655 6295 17 17 0.22% 0.27%
D 7656 6296 20 20 0.26% 0.32%

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 14 238 12078907 187830.93 322 317 64.3
A 14 254 104764 1624.23 322 317 64.3
A 11 29 2865 39.62 322 317 64.3
B 7 220 237176 1404.81 903 885 168.2
B 0 245 25630 147.11 903 885 168.2
B 0 190 20046 113.92 903 885 168.2
C 9 221 189864 955.44 864 875 197.8
C 14 238 138691 696.73 864 875 197.8
C 3 233 116487 584.48 864 875 197.8
D 7 238 184378 865.97 893 870 211.9
D 1 52 127322 596.72 893 870 211.9
D 12 218 102404 479.13 893 870 211.9

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