ASTROSAT CZTI

Data Quality Report

Orbit 04520

Creation date: 2024-06-27T14:43:15.761279
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/AS1G05_250T01_9000000568_04520cztM0_level2.evt modeM0/AS1G05_250T01_9000000568_04520cztM0_level2_quad_clean.evt
Size (bytes)535,527,36087,344,640
Size510.7 MB 83.3 MB
Events in quadrant A4,934,825537,476
Events in quadrant B3,514,199546,577
Events in quadrant C3,316,597535,700
Events in quadrant D3,958,524518,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198021
B0155000
C0151400
D0168380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72846258.580450%
B72841542.114223%
C72841361.867106%
D72842233.061505%

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 7284 7284 217 217 2.98% 2.98%
B 7284 7284 15 15 0.21% 0.21%
C 7284 7284 2 2 0.03% 0.03%
D 7284 7284 96 96 1.32% 1.32%

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 0 13 1722101 10201.76 817 798 168.7
A 8 15 35683 206.76 817 798 168.7
A 15 234 22196 126.82 817 798 168.7
B 8 3 126805 777.41 841 820 162.1
B 4 48 60423 367.79 841 820 162.1
B 15 204 21995 130.66 841 820 162.1
C 9 247 126603 662.2 813 814 190.0
C 9 54 7732 36.42 813 814 190.0
C 13 61 6667 30.81 813 814 190.0
D 13 235 252966 1293.44 807 782 195.0
D 13 106 109182 555.98 807 782 195.0
D 2 136 74963 380.47 807 782 195.0

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