ASTROSAT CZTI

Data Quality Report

Orbit 27623

Creation date: 2024-06-27T19:42:18.207780
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/AS1T03_257T01_9000003976_27623cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27623cztM0_level2_quad_clean.evt
Size (bytes)632,583,36087,433,920
Size603.3 MB 83.4 MB
Events in quadrant A3,845,014536,107
Events in quadrant B6,519,197529,154
Events in quadrant C3,907,676519,503
Events in quadrant D4,343,357507,125

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166510
B0245840
C0166970
D0183820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79932863.578131%
B7994132016.512384%
C79943023.777833%
D79941972.464348%

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 8008 7994 2 2 0.02% 0.03%
B 8009 7994 667 667 8.33% 8.34%
C 8009 7995 0 0 0.00% 0.00%
D 8009 7994 20 20 0.25% 0.25%

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 12 96 17284 80.91 990 967 201.7
A 13 254 12522 57.3 990 967 201.7
A 3 137 10025 44.91 990 967 201.7
B 3 64 2083590 11649.15 926 900 178.8
B 10 245 704936 3937.9 926 900 178.8
B 15 222 36923 201.49 926 900 178.8
C 14 238 153279 680.22 951 955 223.9
C 2 16 20405 86.86 951 955 223.9
C 10 22 14821 61.92 951 955 223.9
D 1 52 446791 1936.7 958 929 230.2
D 7 80 184206 796.11 958 929 230.2
D 2 250 55281 236.09 958 929 230.2

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