ASTROSAT CZTI

Data Quality Report

Orbit 09639

Creation date: 2024-06-27T15:48:45.287419
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/AS1A03_077T01_9000001372_09639cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09639cztM0_level2_quad_clean.evt
Size (bytes)109,710,72014,699,520
Size104.6 MB 14.0 MB
Events in quadrant A791,72188,016
Events in quadrant B786,14982,040
Events in quadrant C806,46689,930
Events in quadrant D829,73670,153

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01914
B02014
C01913
D02114

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012395
B012696
C012188
D012595

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126609446
B0129479811
C0127499452
D01469411391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156720.127632%
B151550.330033%
C161630.185644%
D147280.543478%

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 7420 2136 0 0 0.00% 0.00%
B 7442 2075 0 0 0.00% 0.00%
C 7427 2163 0 0 0.00% 0.00%
D 7417 1993 2 2 0.03% 0.10%

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 14 111 2358 50.15 204 201 43.0
A 0 226 1893 39.34 204 201 43.0
A 12 194 1704 34.95 204 201 43.0
B 0 214 5773 142.52 199 195 39.1
B 12 111 4102 99.83 199 195 39.1
B 11 111 3237 77.73 199 195 39.1
C 13 61 1518 26.88 206 207 48.8
C 3 203 481 5.62 206 207 48.8
C 3 202 481 5.62 206 207 48.8
D 8 195 50575 1082.67 186 181 46.5
D 10 172 25163 536.72 186 181 46.5
D 7 71 12837 271.9 186 181 46.5

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