ASTROSAT CZTI

Data Quality Report

Orbit 12679

Creation date: 2024-06-27T16:30:56.695242
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/AS1A04_174T01_9000001876_12679cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12679cztM0_level2_quad_clean.evt
Size (bytes)486,766,08092,661,120
Size464.2 MB 88.4 MB
Events in quadrant A2,920,699634,749
Events in quadrant B5,370,318552,444
Events in quadrant C2,871,276618,521
Events in quadrant D3,184,036593,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122472
B0197641
C0121291
D0131761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5825621.064378%
B582593416.034335%
C5825460.789700%
D58251111.905579%

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 7135 5825 0 0 0.00% 0.00%
B 7135 5825 740 740 10.37% 12.70%
C 7135 5825 4 4 0.06% 0.07%
D 7135 5825 45 45 0.63% 0.77%

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 12 189 10721 64.71 754 740 154.2
A 0 226 6945 40.23 754 740 154.2
A 8 15 6042 34.38 754 740 154.2
B 4 239 1782603 13836.22 687 673 128.8
B 3 64 748898 5809.77 687 673 128.8
B 11 51 57175 438.72 687 673 128.8
C 15 208 39239 231.79 724 731 166.1
C 13 61 5265 27.29 724 731 166.1
C 9 221 5136 26.52 724 731 166.1
D 1 52 279704 1612.57 722 708 173.0
D 10 253 60471 345.43 722 708 173.0
D 13 61 28051 158.04 722 708 173.0

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