ASTROSAT CZTI

Data Quality Report

Orbit 18982

Creation date: 2024-06-27T17:57:30.607601
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/AS1A05_166T04_9000002826_18982cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18982cztM0_level2_quad_clean.evt
Size (bytes)728,922,24081,005,760
Size695.2 MB 77.3 MB
Events in quadrant A3,788,970483,452
Events in quadrant B5,283,700489,678
Events in quadrant C4,175,757475,686
Events in quadrant D8,297,729459,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163502
B0208043
C0171862
D0301692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78241772.262270%
B78245026.416155%
C78242232.850204%
D782490211.528630%

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 8439 7826 0 0 0.00% 0.00%
B 8439 7826 187 187 2.22% 2.39%
C 8439 7826 5 5 0.06% 0.06%
D 8439 7826 559 559 6.62% 7.14%

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 11 29 10430 47.42 980 957 199.8
A 0 226 8551 38.01 980 957 199.8
A 13 254 8361 37.06 980 957 199.8
B 3 112 1119393 5922.01 963 937 188.9
B 7 220 305678 1613.55 963 937 188.9
B 0 245 37825 195.31 963 937 188.9
C 3 233 196265 872.71 941 948 223.8
C 14 238 141851 629.58 941 948 223.8
C 8 208 83570 369.17 941 948 223.8
D 7 238 3734095 16382.42 930 902 227.9
D 9 68 308890 1351.55 930 902 227.9
D 1 52 230027 1005.47 930 902 227.9

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