ASTROSAT CZTI

Data Quality Report

Orbit 15709

Creation date: 2024-06-27T17:12:26.632098
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_198T01_9000002322_15709cztM0_level2.evt modeM0/AS1A04_198T01_9000002322_15709cztM0_level2_quad_clean.evt
Size (bytes)556,937,280100,615,680
Size531.1 MB 96.0 MB
Events in quadrant A3,963,332623,142
Events in quadrant B4,076,484634,454
Events in quadrant C4,070,308623,533
Events in quadrant D4,214,689610,592

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171973
B0172112
C0169852
D0179492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79784175.226874%
B79784155.201805%
C79784125.164202%
D79784095.126598%

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 8064 7980 22 22 0.27% 0.28%
B 8064 7980 2 2 0.02% 0.03%
C 8064 7980 0 0 0.00% 0.00%
D 8064 7980 43 43 0.53% 0.54%

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 13 248 176672 883.31 978 951 198.9
A 9 143 23080 111.24 978 951 198.9
A 0 226 8735 39.13 978 951 198.9
B 4 216 61845 322.37 971 945 188.9
B 10 245 53858 280.09 971 945 188.9
B 3 209 34740 178.89 971 945 188.9
C 3 233 218999 978.87 948 952 222.8
C 14 238 141758 632.12 948 952 222.8
C 10 22 10258 41.78 948 952 222.8
D 1 52 376761 1473.54 963 938 255.0
D 12 221 38788 148.4 963 938 255.0
D 12 110 34220 130.49 963 938 255.0

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