ASTROSAT CZTI

Data Quality Report

Orbit 27062

Creation date: 2024-06-27T19:36:02.756192
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/AS1A09_120T02_9000003904_27062cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27062cztM0_level2_quad_clean.evt
Size (bytes)2,160,722,880208,252,800
Size2.0 GB 198.6 MB
Events in quadrant A18,630,7281,167,686
Events in quadrant B15,113,8011,390,275
Events in quadrant C8,841,6181,347,254
Events in quadrant D21,674,7191,192,033

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0669420
B0557370
C0366570
D0761450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17521377521.545574%
B17521240313.714971%
C175212491.421152%
D17521497228.377376%

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 19586 17524 3260 3260 16.64% 18.60%
B 19586 17524 1911 1911 9.76% 10.91%
C 19586 17524 21 21 0.11% 0.12%
D 19586 17524 4639 4639 23.69% 26.47%

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 14 235 10860633 27250.4 1986 1951 398.5
A 9 130 70558 172.17 1986 1951 398.5
A 6 16 40114 95.77 1986 1951 398.5
B 0 189 6719120 16755.34 2093 2042 400.9
B 10 246 93459 228.03 2093 2042 400.9
B 12 111 48654 116.27 2093 2042 400.9
C 14 238 335612 673.56 2097 2113 495.1
C 15 208 294823 591.18 2097 2113 495.1
C 4 224 28616 53.53 2097 2113 495.1
D 1 52 13027425 29566.26 1829 1785 440.6
D 12 233 1183298 2681.86 1829 1785 440.6
D 2 250 480855 1087.42 1829 1785 440.6

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