ASTROSAT CZTI

Data Quality Report

Orbit 18789

Creation date: 2024-06-27T17:54:44.484838
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_024T01_9000002810_18789cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18789cztM0_level2_quad_clean.evt
Size (bytes)500,970,24074,191,680
Size477.8 MB 70.8 MB
Events in quadrant A3,523,128452,300
Events in quadrant B3,689,434455,536
Events in quadrant C3,587,887438,590
Events in quadrant D3,914,419430,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145382
B0149942
C0148342
D0159192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67261582.349093%
B67261582.349093%
C67261782.646447%
D67262393.553375%

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 7901 6727 10 10 0.13% 0.15%
B 7901 6727 4 4 0.05% 0.06%
C 7901 6727 0 0 0.00% 0.00%
D 7901 6727 70 70 0.89% 1.04%

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 12 96 30126 163.67 900 885 178.7
A 13 254 10905 56.08 900 885 178.7
A 6 16 10861 55.84 900 885 178.7
B 7 220 52510 309.82 891 869 166.7
B 0 229 39319 230.68 891 869 166.7
B 4 216 25178 145.84 891 869 166.7
C 14 238 136006 683.76 855 860 197.6
C 3 233 113258 568.67 855 860 197.6
C 9 54 6537 28.72 855 860 197.6
D 1 52 596598 2838.63 869 844 209.9
D 2 234 28018 129.48 869 844 209.9
D 5 222 15933 71.9 869 844 209.9

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