ASTROSAT CZTI

Data Quality Report

Orbit 14740

Creation date: 2024-06-27T16:59:18.748937
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/AS1G08_081T01_9000002178_14740cztM0_level2.evt modeM0/AS1G08_081T01_9000002178_14740cztM0_level2_quad_clean.evt
Size (bytes)709,228,800110,975,040
Size676.4 MB 105.8 MB
Events in quadrant A8,482,656679,418
Events in quadrant B4,198,050714,386
Events in quadrant C4,440,142699,816
Events in quadrant D3,811,201704,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308912
B0179352
C0182772
D0170812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A808382010.144748%
B80832002.474329%
C8083931.150563%
D8083520.643325%

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 8709 8085 528 528 6.06% 6.53%
B 8709 8087 18 18 0.21% 0.22%
C 8709 8087 3 3 0.03% 0.04%
D 8709 8086 5 5 0.06% 0.06%

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 15 4660850 23262.5 985 962 200.3
A 12 189 22786 108.95 985 962 200.3
A 0 226 8802 39.14 985 962 200.3
B 0 189 77139 394.92 1003 977 192.9
B 10 16 73494 376.02 1003 977 192.9
B 0 205 38512 194.63 1003 977 192.9
C 3 233 573750 2498.46 982 989 229.2
C 6 96 30458 128.55 982 989 229.2
C 13 61 7050 26.44 982 989 229.2
D 2 234 36696 149.27 981 957 239.4
D 2 14 34897 141.76 981 957 239.4
D 13 172 16077 63.15 981 957 239.4

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