ASTROSAT CZTI

Data Quality Report

Orbit 47440

Creation date: 2024-07-06T17:22:06.961925
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/AS1A13_053T01_9000006326_47440cztM0_level2.fits modeM0/AS1A13_053T01_9000006326_47440cztM0_level2_quad_clean.evt
Size (bytes)1,234,445,760281,710,080
Size1.1 GB 268.7 MB
Events in quadrant A17,178,3461,851,017
Events in quadrant B9,139,6081,899,951
Events in quadrant C7,984,9571,859,722
Events in quadrant D10,004,0971,680,057

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0631083
B0396971
C0370561
D0425901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03620
D03620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179605012.789532%
B179614022.238183%
C179611650.918657%
D179614062.260453%

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 18121 17962 107 107 0.59% 0.60%
B 18121 17962 128 128 0.71% 0.71%
C 18121 17962 31 31 0.17% 0.17%
D 18121 17962 256 256 1.41% 1.43%

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 10 83 8846420 21741.49 1959 1914 406.8
A 9 191 723101 1772.82 1959 1914 406.8
A 3 137 23404 52.83 1959 1914 406.8
B 5 32 1041782 2706.82 1958 1889 384.2
B 5 171 74179 188.17 1958 1889 384.2
B 0 198 53603 134.61 1958 1889 384.2
C 3 233 323568 706.19 1945 1955 455.4
C 0 207 32069 66.12 1945 1955 455.4
C 13 61 12932 24.1 1945 1955 455.4
D 2 165 1607999 3308.46 1937 1877 485.5
D 2 249 430183 882.27 1937 1877 485.5
D 12 233 328277 672.35 1937 1877 485.5

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