ASTROSAT CZTI

Data Quality Report

Orbit 50804

Creation date: 2025-02-18T09:31:32.153720
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/AS1C07_001T01_9000006450_50804cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50804cztM0_level2_quad_clean.evt
Size (bytes)832,527,360117,002,880
Size794.0 MB 111.6 MB
Events in quadrant A4,627,432814,921
Events in quadrant B4,473,040889,669
Events in quadrant C10,649,648600,477
Events in quadrant D10,391,614630,879

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198510
B0197190
C0377781
D0370080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8731590.675753%
B87321101.259734%
C8731226125.896232%
D8731154117.649754%

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 8731 8731 35 35 0.40% 0.40%
B 8732 8732 42 42 0.48% 0.48%
C 8731 8731 1477 1477 16.92% 16.92%
D 8731 8731 1515 1515 17.35% 17.35%

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 4 3 237383 1027.03 935 912 230.2
A 4 13 91355 392.81 935 912 230.2
A 5 240 87559 376.32 935 912 230.2
B 8 128 284761 1403.48 939 906 202.3
B 4 206 173187 851.82 939 906 202.3
B 10 247 87659 428.94 939 906 202.3
C 4 210 3329445 14664.67 819 813 227.0
C 5 10 1883254 8293.31 819 813 227.0
C 12 247 518100 2278.97 819 813 227.0
D 8 48 2731712 11480.44 853 822 237.9
D 2 216 833955 3502.42 853 822 237.9
D 7 126 390150 1636.7 853 822 237.9

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