ASTROSAT CZTI

Data Quality Report

Orbit 11540

Creation date: 2024-06-27T16:14:29.587903
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_009T01_9000001692_11540cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11540cztM0_level2_quad_clean.evt
Size (bytes)623,770,560107,899,200
Size594.9 MB 102.9 MB
Events in quadrant A5,178,128689,035
Events in quadrant B5,063,705682,617
Events in quadrant C3,551,255691,801
Events in quadrant D4,565,724657,854

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206203
B0203212
C0162122
D0189292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78592603.308309%
B78593995.076982%
C7859280.356279%
D78591822.315816%

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 8655 7862 88 88 1.02% 1.12%
B 8655 7862 175 175 2.02% 2.23%
C 8655 7862 0 0 0.00% 0.00%
D 8655 7862 108 108 1.25% 1.37%

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 1073040 5545.74 939 916 193.3
A 1 162 134773 692.4 939 916 193.3
A 9 143 113732 583.56 939 916 193.3
B 4 239 1212323 6754.35 933 912 179.4
B 15 204 131847 730.04 933 912 179.4
B 12 111 20157 107.3 933 912 179.4
C 13 61 6721 27.25 911 915 213.1
C 3 202 2255 6.29 911 915 213.1
C -1 -1 -1 -1.0 911 915 213.1
D 1 52 467340 2127.31 905 878 219.3
D 2 120 147205 667.33 905 878 219.3
D 13 137 110067 497.96 905 878 219.3

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