ASTROSAT CZTI

Data Quality Report

Orbit 06727

Creation date: 2024-06-27T15:10:50.448620
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/AS1C02_003T01_9000000924_06727cztM0_level2.evt modeM0/AS1C02_003T01_9000000924_06727cztM0_level2_quad_clean.evt
Size (bytes)920,315,520147,487,680
Size877.7 MB 140.7 MB
Events in quadrant A6,514,950886,461
Events in quadrant B6,393,253889,312
Events in quadrant C6,087,982879,940
Events in quadrant D7,926,597842,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293763
B0289122
C0284842
D0324782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140051811.292396%
B140051801.285255%
C140051220.871117%
D140053262.327740%

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 15370 14007 12 12 0.08% 0.09%
B 15370 14007 30 30 0.20% 0.21%
C 15370 14007 3 3 0.02% 0.02%
D 15370 14007 181 181 1.18% 1.29%

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 14 111 228568 700.36 1586 1547 324.2
A 13 251 116961 356.05 1586 1547 324.2
A 8 15 67287 202.81 1586 1547 324.2
B 10 252 160044 517.01 1598 1559 306.5
B 12 111 32194 99.94 1598 1559 306.5
B 11 111 25639 78.55 1598 1559 306.5
C 12 4 20709 53.15 1551 1555 360.4
C 9 247 18145 46.03 1551 1555 360.4
C 13 61 12080 29.2 1551 1555 360.4
D 8 195 963742 2542.97 1543 1494 378.4
D 2 33 498640 1313.83 1543 1494 378.4
D 2 14 146812 384.04 1543 1494 378.4

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