ASTROSAT CZTI

Data Quality Report

Orbit 09702

Creation date: 2024-06-27T15:49:49.548054
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/AS1A03_084T01_9000001382_09702cztM0_level2.evt modeM0/AS1A03_084T01_9000001382_09702cztM0_level2_quad_clean.evt
Size (bytes)547,073,28095,336,640
Size521.7 MB 90.9 MB
Events in quadrant A3,945,818593,692
Events in quadrant B3,970,713602,966
Events in quadrant C3,775,641589,820
Events in quadrant D4,357,248569,382

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164694
B0166623
C0164663
D0179485

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76343384.427561%
B76343374.414462%
C76342303.012837%
D76333374.415040%

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 8224 7639 4 4 0.05% 0.05%
B 8224 7639 2 2 0.02% 0.03%
C 8224 7639 14 14 0.17% 0.18%
D 8224 7639 47 47 0.57% 0.62%

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 1 162 134515 678.81 949 927 196.8
A 1 178 46670 232.44 949 927 196.8
A 1 161 40015 198.62 949 927 196.8
B 0 214 74689 398.46 952 927 185.1
B 0 187 47852 253.48 952 927 185.1
B 10 245 41661 220.04 952 927 185.1
C 14 234 70743 323.03 921 920 216.2
C 10 22 67396 307.55 921 920 216.2
C 9 237 32367 145.49 921 920 216.2
D 1 52 610044 2690.34 915 891 226.4
D 8 195 132935 583.18 915 891 226.4
D 2 152 60157 261.75 915 891 226.4

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