ASTROSAT CZTI

Data Quality Report

Orbit 24784

Creation date: 2024-06-27T19:09:51.960648
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/AS1A07_147T01_9000003624_24784cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24784cztM0_level2_quad_clean.evt
Size (bytes)660,778,56091,969,920
Size630.2 MB 87.7 MB
Events in quadrant A3,565,418619,728
Events in quadrant B8,196,287492,954
Events in quadrant C3,992,800584,595
Events in quadrant D3,766,075582,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150061
B0289521
C0163021
D0156811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72521051.447876%
B7253194826.857852%
C72531682.316283%
D7253720.992693%

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 7807 7253 0 0 0.00% 0.00%
B 7808 7254 1558 1558 19.95% 21.48%
C 7808 7254 0 0 0.00% 0.00%
D 7808 7254 1 1 0.01% 0.01%

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 13 254 10814 53.42 925 905 185.5
A 3 137 8718 42.12 925 905 185.5
A 0 226 7980 38.14 925 905 185.5
B 3 64 5127650 34187.26 777 757 150.0
B 12 111 19145 122.62 777 757 150.0
B 11 111 16945 107.95 777 757 150.0
C 2 16 255159 1238.66 876 880 205.3
C 10 91 155990 755.58 876 880 205.3
C 14 238 140945 682.29 876 880 205.3
D 8 195 355489 1625.21 893 868 218.2
D 2 234 25911 114.77 893 868 218.2
D 1 52 22779 100.42 893 868 218.2

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