ASTROSAT CZTI

Data Quality Report

Orbit 11742

Creation date: 2024-06-27T16:17:51.471842
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_167T04_9000001734_11742cztM0_level2.evt modeM0/AS1A04_167T04_9000001734_11742cztM0_level2_quad_clean.evt
Size (bytes)644,158,08090,311,040
Size614.3 MB 86.1 MB
Events in quadrant A4,339,759551,628
Events in quadrant B5,634,717534,147
Events in quadrant C3,560,964574,696
Events in quadrant D5,455,339542,630

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177793
B0216382
C0158102
D0218742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76513254.247811%
B76517259.475886%
C76511441.882107%
D76512653.463600%

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 7817 7655 11 11 0.14% 0.14%
B 7817 7655 329 329 4.21% 4.30%
C 7817 7655 0 0 0.00% 0.00%
D 7817 7655 32 32 0.41% 0.42%

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 8 15 317100 1661.98 921 901 190.3
A 1 162 148663 776.66 921 901 190.3
A 1 178 79874 415.09 921 901 190.3
B 3 64 1010350 5879.44 894 870 171.7
B 4 239 810530 4715.64 894 870 171.7
B 15 204 194155 1125.73 894 870 171.7
C 13 61 6755 27.78 911 915 210.2
C 8 128 4289 16.05 911 915 210.2
C 14 234 3072 10.26 911 915 210.2
D 8 195 1117939 5142.45 902 874 217.2
D 1 52 586547 2696.17 902 874 217.2
D 9 85 86479 394.09 902 874 217.2

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