ASTROSAT CZTI

Data Quality Report

Orbit 19803

Creation date: 2024-06-27T18:07:12.391387
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_117T01_9000002958_19803cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19803cztM0_level2_quad_clean.evt
Size (bytes)250,752,96058,858,560
Size239.1 MB 56.1 MB
Events in quadrant A2,859,113384,573
Events in quadrant B1,366,485411,421
Events in quadrant C1,405,187395,357
Events in quadrant D1,766,780385,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105041
B059051
C059281
D071751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28682418.403068%
B286850.174338%
C2868210.732218%
D2868722.510460%

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 2868 2868 232 232 8.09% 8.09%
B 2868 2868 0 0 0.00% 0.00%
C 2868 2868 0 0 0.00% 0.00%
D 2868 2868 69 69 2.41% 2.41%

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 1561529 22556.67 337 331 69.2
A 0 226 2795 35.6 337 331 69.2
A 3 137 2489 31.18 337 331 69.2
B 12 111 7512 107.19 349 341 66.9
B 11 111 6791 96.42 349 341 66.9
B 14 111 6048 85.31 349 341 66.9
C 14 238 53550 652.51 343 346 81.5
C 3 233 12096 144.11 343 346 81.5
C 13 61 2411 25.33 343 346 81.5
D 12 218 275521 3305.81 340 332 83.2
D 1 52 132911 1592.65 340 332 83.2
D 7 238 22105 261.56 340 332 83.2

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