ASTROSAT CZTI

Data Quality Report

Orbit 20210807_A10_103T09_9000004630_level2

Creation date: 2021-08-11T09:11:14.232335
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_103T09_9000004630cztM0_level2_bc.evt modeM0/AS1A10_103T09_9000004630cztM0_level2_quad_clean.evt
Size (bytes)2,623,703,040671,065,920
Size2.4 GB 640.0 MB
Events in quadrant A12,119,5974,362,763
Events in quadrant B28,326,4004,304,581
Events in quadrant C18,372,4934,114,673
Events in quadrant D17,175,5564,044,593

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120650
B01659190
C01395090
D01242890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010400
B010400
C010400
D010400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509917301.431625%
B5096618053.541577%
C5096526465.191798%
D5098313072.563600%

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 85510 51045 13 13 0.02% 0.03%
B 85510 51012 41 41 0.05% 0.08%
C 85510 51031 9 9 0.01% 0.02%
D 85510 51042 323 323 0.38% 0.63%

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 0 13 1075896 1754.69 2825 2778 611.6
A 13 254 94049 149.24 2825 2778 611.6
A 14 238 33621 50.43 2825 2778 611.6
B 6 159 13800729 25710.42 2822 2757 536.7
B 10 245 1483366 2758.89 2822 2757 536.7
B 4 80 820244 1523.26 2822 2757 536.7
C 3 233 5895738 9389.14 2658 2651 627.6
C 0 10 1334307 2121.66 2658 2651 627.6
C 10 22 419631 664.35 2658 2651 627.6
D 8 195 3426941 5562.87 2734 2654 615.6
D 12 227 1462424 2371.44 2734 2654 615.6
D 13 249 750562 1215.0 2734 2654 615.6

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