ASTROSAT CZTI

Data Quality Report

Orbit 15882

Creation date: 2024-06-27T17:14:44.437818
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/AS1A04_143T01_9000002344_15882cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15882cztM0_level2_quad_clean.evt
Size (bytes)476,899,20098,164,800
Size454.8 MB 93.6 MB
Events in quadrant A3,478,560620,930
Events in quadrant B3,548,155638,018
Events in quadrant C3,537,045607,409
Events in quadrant D3,382,712598,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01502
D01502

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01534684
B01540271
C01525189
D01530860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73061622.217356%
B73121672.283917%
C73041722.354874%
D73181181.612462%

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 7528 7348 23 23 0.31% 0.31%
B 7528 7350 2 2 0.03% 0.03%
C 7528 7344 0 0 0.00% 0.00%
D 7528 7349 3 3 0.04% 0.04%

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 15 239 51020 277.67 879 858 180.7
A 15 69 32128 173.09 879 858 180.7
A 9 143 8165 40.45 879 858 180.7
B 4 173 29362 168.17 881 857 169.5
B 3 209 23422 133.12 881 857 169.5
B 12 111 20245 114.38 881 857 169.5
C 14 238 129840 647.12 848 855 199.3
C 0 207 42950 211.19 848 855 199.3
C 3 233 25107 121.67 848 855 199.3
D 1 52 90238 418.77 865 837 213.5
D 2 234 26952 122.33 865 837 213.5
D 5 51 14938 66.05 865 837 213.5

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