ASTROSAT CZTI

Data Quality Report

Orbit 20568

Creation date: 2024-06-27T18:16:56.215505
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_088T03_9000003042_20568cztM0_level2.evt modeM0/AS1A05_088T03_9000003042_20568cztM0_level2_quad_clean.evt
Size (bytes)1,388,272,320281,079,360
Size1.3 GB 268.1 MB
Events in quadrant A9,141,0511,883,787
Events in quadrant B9,728,7321,874,072
Events in quadrant C9,259,4981,825,334
Events in quadrant D12,695,0771,685,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389054
B0406694
C0388444
D0498454

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180562571.423350%
B180562891.600576%
C180563381.871954%
D1805612576.961675%

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 22916 18059 0 0 0.00% 0.00%
B 22916 18059 28 28 0.12% 0.16%
C 22916 18059 0 0 0.00% 0.00%
D 22916 18059 872 872 3.81% 4.83%

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 6 16 95918 200.88 2345 2297 466.1
A 8 205 24291 47.19 2345 2297 466.1
A 0 226 20456 38.96 2345 2297 466.1
B 7 220 376532 875.8 2321 2269 427.3
B 0 197 87285 198.94 2321 2269 427.3
B 0 219 68875 155.86 2321 2269 427.3
C 14 238 353938 676.92 2260 2280 519.5
C 3 9 64381 119.54 2260 2280 519.5
C 3 233 16976 28.29 2260 2280 519.5
D 5 222 2288634 4298.84 2216 2160 531.9
D 1 52 1097371 2059.13 2216 2160 531.9
D 7 238 231938 432.01 2216 2160 531.9

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