ASTROSAT CZTI

Data Quality Report

Orbit 13365

Creation date: 2024-06-27T16:39:43.196109
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_082T01_9000001986_13365cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13365cztM0_level2_quad_clean.evt
Size (bytes)671,293,440126,213,120
Size640.2 MB 120.4 MB
Events in quadrant A4,160,950822,686
Events in quadrant B4,358,524838,621
Events in quadrant C4,560,616808,731
Events in quadrant D6,663,432751,036

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182043
B0188962
C0192662
D0256882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86611191.373975%
B86612152.482392%
C86611762.032098%
D86616437.424085%

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 8882 8664 8 8 0.09% 0.09%
B 8882 8664 13 13 0.15% 0.15%
C 8882 8664 27 27 0.30% 0.31%
D 8882 8664 362 362 4.08% 4.18%

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 9 143 101976 475.0 1040 1015 212.5
A 1 162 18436 81.96 1040 1015 212.5
A 15 69 12261 52.91 1040 1015 212.5
B 3 64 129611 640.5 1044 1013 200.8
B 0 189 66465 325.99 1044 1013 200.8
B 0 230 48696 237.49 1044 1013 200.8
C 14 220 488587 2051.2 1021 1027 237.7
C 3 233 86771 360.73 1021 1027 237.7
C 13 61 7581 27.57 1021 1027 237.7
D 1 52 2062332 8624.31 984 952 239.0
D 8 195 362742 1513.64 984 952 239.0
D 9 85 225180 938.12 984 952 239.0

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