ASTROSAT CZTI

Data Quality Report

Orbit 22860

Creation date: 2024-06-27T18:46:42.818114
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/AS1A07_054T01_9000003378_22860cztM0_level2.evt modeM0/AS1A07_054T01_9000003378_22860cztM0_level2_quad_clean.evt
Size (bytes)483,785,280127,722,240
Size461.4 MB 121.8 MB
Events in quadrant A3,390,663875,407
Events in quadrant B3,267,825876,682
Events in quadrant C3,155,398825,273
Events in quadrant D4,373,368814,807

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146961
B0141291
C0139501
D0175171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6829851.244692%
B6829650.951823%
C68291141.669351%
D68292233.265485%

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 7069 6830 2 2 0.03% 0.03%
B 7069 6830 0 0 0.00% 0.00%
C 7069 6830 0 0 0.00% 0.00%
D 7069 6830 132 132 1.87% 1.93%

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 11 47 183129 1112.56 812 794 163.9
A 13 252 68764 414.74 812 794 163.9
A 13 254 11564 65.72 812 794 163.9
B 0 189 31703 201.84 805 783 153.2
B 0 190 28682 182.12 805 783 153.2
B 0 228 24941 157.7 805 783 153.2
C 14 238 123670 683.38 769 771 179.8
C 0 207 19485 104.06 769 771 179.8
C 7 247 9792 50.16 769 771 179.8
D 7 238 552321 2897.43 780 755 190.4
D 1 239 180768 945.63 780 755 190.4
D 2 152 173741 908.71 780 755 190.4

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