ASTROSAT CZTI

Data Quality Report

Orbit 26189

Creation date: 2024-06-27T19:25:54.452428
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_012T04_9000003784_26189cztM0_level2.evt modeM0/AS1A09_012T04_9000003784_26189cztM0_level2_quad_clean.evt
Size (bytes)309,372,48072,616,320
Size295.0 MB 69.3 MB
Events in quadrant A1,841,690486,380
Events in quadrant B1,922,517497,279
Events in quadrant C2,090,530485,101
Events in quadrant D3,258,192464,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078720
B080320
C085310
D0122250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37511734.612103%
B37511724.585444%
C37511804.798720%
D375145812.210077%

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 4026 3752 0 0 0.00% 0.00%
B 4026 3752 0 0 0.00% 0.00%
C 4026 3752 0 0 0.00% 0.00%
D 4026 3752 324 324 8.05% 8.64%

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 7496 72.54 475 462 97.0
A 13 254 5821 55.26 475 462 97.0
A 3 137 4541 42.06 475 462 97.0
B 0 230 33808 361.48 473 458 92.3
B 0 190 28903 308.31 473 458 92.3
B 12 111 11071 115.03 473 458 92.3
C 2 16 133935 1216.56 465 466 109.7
C 14 238 71936 651.44 465 466 109.7
C 3 233 65837 595.85 465 466 109.7
D 12 233 821515 7441.43 463 450 110.3
D 1 52 672168 6087.88 463 450 110.3
D 2 234 15919 140.2 463 450 110.3

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