ASTROSAT CZTI

Data Quality Report

Orbit 26990

Creation date: 2024-06-27T19:35:19.882906
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_145T01_9000003900_26990cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26990cztM0_level2_quad_clean.evt
Size (bytes)708,013,44074,203,200
Size675.2 MB 70.8 MB
Events in quadrant A6,071,441432,323
Events in quadrant B3,450,671465,174
Events in quadrant C3,489,409446,947
Events in quadrant D7,970,395427,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226390
B0142390
C0143560
D0283950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A681483212.210156%
B6814691.012621%
C68131021.497138%
D6813129218.963746%

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 7694 6814 560 560 7.28% 8.22%
B 7694 6814 1 1 0.01% 0.01%
C 7693 6813 1 1 0.01% 0.01%
D 7693 6813 1011 1011 13.14% 14.84%

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 14 235 2459102 14396.64 847 831 170.8
A 6 16 293996 1716.89 847 831 170.8
A 8 192 34859 199.28 847 831 170.8
B 12 111 20266 114.7 877 857 169.2
B 11 111 18055 101.63 877 857 169.2
B 14 111 15583 87.02 877 857 169.2
C 14 238 135242 668.83 849 858 200.9
C 15 208 42542 207.46 849 858 200.9
C 2 16 5873 24.96 849 858 200.9
D 1 52 3944207 20272.65 806 784 194.5
D 5 222 680122 3492.39 806 784 194.5
D 2 250 141654 724.2 806 784 194.5

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