ASTROSAT CZTI

Data Quality Report

Orbit 26089

Creation date: 2024-06-27T19:24:54.575838
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_126T01_9000003772_26089cztM0_level2.evt modeM0/AS1A09_126T01_9000003772_26089cztM0_level2_quad_clean.evt
Size (bytes)1,549,851,840259,539,840
Size1.4 GB 247.5 MB
Events in quadrant A9,080,4651,703,530
Events in quadrant B9,429,4081,713,776
Events in quadrant C9,054,3001,633,371
Events in quadrant D18,104,2921,513,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389640
B0398040
C0390750
D0664620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188012591.377586%
B188013521.872241%
C188014002.127546%
D18801215611.467475%

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 19621 18804 0 0 0.00% 0.00%
B 19621 18804 5 5 0.03% 0.03%
C 19621 18803 0 0 0.00% 0.00%
D 19621 18801 1847 1847 9.41% 9.82%

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 13 254 31842 62.6 2351 2305 471.9
A 3 137 22259 42.29 2351 2305 471.9
A 0 226 20306 38.15 2351 2305 471.9
B 15 33 197404 439.42 2324 2267 444.1
B 12 111 55215 119.23 2324 2267 444.1
B 0 190 53698 115.82 2324 2267 444.1
C 14 238 355855 680.96 2224 2241 519.3
C 3 233 22041 38.13 2224 2241 519.3
C 2 16 17409 29.21 2224 2241 519.3
D 1 52 8798656 16876.77 2179 2129 521.2
D 12 233 665923 1273.54 2179 2129 521.2
D 7 80 218635 415.38 2179 2129 521.2

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