ASTROSAT CZTI

Data Quality Report

Orbit 31559

Creation date: 2024-06-27T20:29:57.946584
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/AS1A10_056T01_9000004598_31559cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31559cztM0_level2_quad_clean.evt
Size (bytes)261,676,80060,062,400
Size249.6 MB 57.3 MB
Events in quadrant A1,618,679407,035
Events in quadrant B2,548,868399,402
Events in quadrant C1,703,709388,871
Events in quadrant D1,824,944386,208

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100633088
B0149244914
C0101813064
D0133045716

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093
B0148
C0104
D082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09927
B09933
C09727
D09521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3383752.216967%
B32841424.323995%
C33351293.868066%
D3361651.933948%

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 5050 3520 0 0 0.00% 0.00%
B 4257 3464 4 4 0.09% 0.12%
C 4294 3490 1 1 0.02% 0.03%
D 4284 3521 15 15 0.35% 0.43%

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 5479 59.02 418 409 85.9
A 3 137 4494 47.55 418 409 85.9
A 5 168 3847 40.02 418 409 85.9
B 6 159 866538 10910.61 405 394 79.4
B 4 80 55326 691.97 405 394 79.4
B 12 1 19181 236.66 405 394 79.4
C 14 238 73530 764.5 398 399 95.7
C 3 233 46055 477.28 398 399 95.7
C 14 254 11556 116.63 398 399 95.7
D 12 218 143046 1456.63 404 392 97.9
D 8 195 111171 1131.16 404 392 97.9
D 12 233 22392 224.64 404 392 97.9

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