ASTROSAT CZTI

Data Quality Report

Orbit 09195

Creation date: 2024-06-27T15:42:34.894180
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/AS1C02_042T02_9000001284_09195cztM0_level2.evt modeM0/AS1C02_042T02_9000001284_09195cztM0_level2_quad_clean.evt
Size (bytes)588,562,56084,654,720
Size561.3 MB 80.7 MB
Events in quadrant A4,818,840501,951
Events in quadrant B3,971,593514,410
Events in quadrant C3,801,146503,289
Events in quadrant D4,692,199490,012

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192953
B0169542
C0167532
D0193662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79645657.094425%
B79644866.102461%
C79643504.394776%
D79645206.529382%

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 8489 7964 34 34 0.40% 0.43%
B 8489 7964 5 5 0.06% 0.06%
C 8489 7964 0 0 0.00% 0.00%
D 8489 7964 102 102 1.20% 1.28%

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 8 5 672635 3306.22 985 961 203.2
A 1 162 147315 720.4 985 961 203.2
A 15 223 89831 437.45 985 961 203.2
B 10 252 22270 110.82 994 968 192.2
B 0 213 21822 108.49 994 968 192.2
B 12 111 21175 105.12 994 968 192.2
C 8 128 12512 50.67 968 972 227.7
C 13 61 7420 28.31 968 972 227.7
C 8 112 7328 27.91 968 972 227.7
D 1 52 798404 3171.06 959 934 251.5
D 13 112 57092 223.31 959 934 251.5
D 4 95 51528 201.18 959 934 251.5

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