ASTROSAT CZTI

Data Quality Report

Orbit 02816

Creation date: 2024-06-27T14:22:00.634998
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/AS1P01_999T99_9000000410_02816cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02816cztM0_level2_quad_clean.evt
Size (bytes)3,471,615,360108,302,400
Size3.2 GB 103.3 MB
Events in quadrant A17,097,911844,481
Events in quadrant B24,539,990789,329
Events in quadrant C34,329,541212,026
Events in quadrant D28,434,522640,150

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0588740
B0811440
C01118170
D0932470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114094153.637479%
B11374209418.410410%
C113551084295.482166%
D11338533747.071794%

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 12603 11409 1335 1335 10.59% 11.70%
B 12568 11375 5960 5960 47.42% 52.40%
C 12549 11356 11101 11101 88.46% 97.75%
D 12532 11339 8223 8223 65.62% 72.52%

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 680879 704.22 4093 4057 961.1
A 0 31 130209 131.26 4093 4057 961.1
A 0 50 111835 112.14 4093 4057 961.1
B 0 228 2888777 3075.76 4009 3976 937.9
B 1 158 1742465 1853.57 4009 3976 937.9
B 1 190 1414053 1503.42 4009 3976 937.9
C 0 219 12610806 35422.83 1182 1211 356.0
C 1 16 9957295 27968.6 1182 1211 356.0
C 1 192 2549072 7157.44 1182 1211 356.0
D 1 7 5069267 5276.66 3161 3213 960.1
D 1 31 4438077 4619.23 3161 3213 960.1
D 1 159 3232126 3363.14 3161 3213 960.1

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
Veto Counter