ASTROSAT CZTI

Data Quality Report

Orbit 09257

Creation date: 2024-06-27T15:43:32.972275
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/AS1A03_091T04_9000001294_09257cztM0_level2.evt modeM0/AS1A03_091T04_9000001294_09257cztM0_level2_quad_clean.evt
Size (bytes)490,504,32082,831,680
Size467.8 MB 79.0 MB
Events in quadrant A3,864,769499,436
Events in quadrant B3,603,699516,294
Events in quadrant C3,344,806500,057
Events in quadrant D3,545,747485,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220296125
B0208085420
C0204945449
D0214805782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020254
B020454
C020250
D020151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72162423.353659%
B73022343.204601%
C72701712.352132%
D72871952.675998%

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 11344 7882 6 6 0.05% 0.08%
B 11344 7959 1 1 0.01% 0.01%
C 11344 7956 1 1 0.01% 0.01%
D 11344 7946 32 32 0.28% 0.40%

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 8 5 420649 2337.94 863 842 179.6
A 15 174 55070 302.0 863 842 179.6
A 1 162 33361 181.1 863 842 179.6
B 0 219 45577 262.1 878 857 170.6
B 0 187 41490 238.14 878 857 170.6
B 0 214 33471 191.14 878 857 170.6
C 14 234 18212 87.06 849 849 199.4
C 8 128 6854 30.11 849 849 199.4
C 13 61 6310 27.38 849 849 199.4
D 1 52 131086 591.51 847 822 220.2
D 2 136 93918 422.74 847 822 220.2
D 7 71 52291 233.71 847 822 220.2

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