ASTROSAT CZTI

Data Quality Report

Orbit 26769

Creation date: 2024-06-27T19:32:38.660822
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_038T08_9000003856_26769cztM0_level2.evt modeM0/AS1A09_038T08_9000003856_26769cztM0_level2_quad_clean.evt
Size (bytes)315,066,24037,356,480
Size300.5 MB 35.6 MB
Events in quadrant A1,422,264259,247
Events in quadrant B1,999,372253,568
Events in quadrant C1,323,563259,577
Events in quadrant D4,618,500171,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057960
B076550
C055570
D0155420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2610592.260536%
B26102429.272031%
C2610481.839080%
D2610140853.946360%

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 2930 2611 14 14 0.48% 0.54%
B 2930 2611 97 97 3.31% 3.72%
C 2930 2611 0 0 0.00% 0.00%
D 2930 2611 1027 1027 35.05% 39.33%

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 122855 1801.32 336 329 68.0
A 13 254 4249 57.63 336 329 68.0
A 3 137 3287 43.49 336 329 68.0
B 0 189 712953 11110.48 324 315 64.1
B 12 111 7530 112.49 324 315 64.1
B 11 111 6810 101.26 324 315 64.1
C 14 238 51871 682.49 321 323 75.5
C 2 16 16526 214.53 321 323 75.5
C 13 61 2178 24.56 321 323 75.5
D 7 80 3470763 55651.6 249 241 62.4
D 1 52 104167 1666.51 249 241 62.4
D 2 250 64122 1024.36 249 241 62.4

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