ASTROSAT CZTI

Data Quality Report

Orbit 32327

Creation date: 2024-06-27T20:38:55.513962
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_005T01_9000004700_32327cztM0_level2.evt modeM0/AS1A10_005T01_9000004700_32327cztM0_level2_quad_clean.evt
Size (bytes)773,138,88075,939,840
Size737.3 MB 72.4 MB
Events in quadrant A3,366,013486,910
Events in quadrant B6,426,037449,942
Events in quadrant C7,535,381425,603
Events in quadrant D5,616,660450,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144802
B0241941
C0270861
D0217981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69741041.491253%
B69746118.761113%
C6974167824.060797%
D69741962.810439%

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 7264 6976 2 2 0.03% 0.03%
B 7264 6976 272 272 3.74% 3.90%
C 7264 6976 931 931 12.82% 13.35%
D 7264 6976 84 84 1.16% 1.20%

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 47361 273.67 844 826 170.0
A 12 189 25322 144.06 844 826 170.0
A 15 174 21021 118.77 844 826 170.0
B 6 159 1966580 12537.05 814 794 156.8
B 5 172 981241 6252.92 814 794 156.8
B 10 245 95443 603.64 814 794 156.8
C 0 10 4323035 24552.28 745 751 176.0
C 14 238 120083 677.85 745 751 176.0
C 15 208 79339 446.41 745 751 176.0
D 8 195 2232369 11423.29 813 789 195.4
D 14 52 71540 362.17 813 789 195.4
D 13 249 64495 326.11 813 789 195.4

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