ASTROSAT CZTI

Data Quality Report

Orbit 04809

Creation date: 2024-06-27T14:47:19.929160
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_142T01_9000000610_04809cztM0_level2.evt modeM0/AS1G05_142T01_9000000610_04809cztM0_level2_quad_clean.evt
Size (bytes)169,914,24024,595,200
Size162.0 MB 23.5 MB
Events in quadrant A905,832152,524
Events in quadrant B972,546154,005
Events in quadrant C935,569155,788
Events in quadrant D2,198,271140,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040852
B041861
C041741
D078321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1928150.778008%
B1928371.919087%
C1928120.622407%
D192828614.834025%

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 2318 1929 1 1 0.04% 0.05%
B 2318 1929 1 1 0.04% 0.05%
C 2318 1929 1 1 0.04% 0.05%
D 2318 1929 352 352 15.19% 18.25%

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 13 251 7273 139.05 231 225 50.7
A 13 6 4181 78.05 231 225 50.7
A 0 226 2389 42.69 231 225 50.7
B 8 3 18732 379.7 235 229 48.7
B 15 85 11774 236.91 235 229 48.7
B 10 16 11480 230.88 235 229 48.7
C 9 247 45769 824.93 226 227 55.2
C 12 4 4889 84.45 226 227 55.2
C 13 61 1922 30.7 226 227 55.2
D 13 235 1226785 22197.07 216 208 55.3
D 2 136 68525 1236.32 216 208 55.3
D 2 14 21866 391.94 216 208 55.3

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