ASTROSAT CZTI

Data Quality Report

Orbit 18920

Creation date: 2024-06-27T17:56:34.247647
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/AS1A05_163T01_9000002820_18920cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18920cztM0_level2_quad_clean.evt
Size (bytes)590,307,84075,415,680
Size563.0 MB 71.9 MB
Events in quadrant A5,513,092441,281
Events in quadrant B4,856,654484,605
Events in quadrant C3,278,606478,462
Events in quadrant D3,825,825462,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201441
B0181211
C0132141
D0151451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5948109618.426362%
B594875012.609280%
C59481151.933423%
D59492764.639435%

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 6988 5949 698 698 9.99% 11.73%
B 6988 5949 537 537 7.68% 9.03%
C 6988 5949 0 0 0.00% 0.00%
D 6989 5950 181 181 2.59% 3.04%

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 2841001 20363.84 693 680 139.5
A 13 254 7798 51.03 693 680 139.5
A 0 226 6079 38.71 693 680 139.5
B 3 112 1884505 13651.83 711 693 138.0
B 4 216 49215 351.63 711 693 138.0
B 7 220 39033 277.85 711 693 138.0
C 3 233 359329 2145.1 717 721 167.2
C 14 238 114385 679.91 717 721 167.2
C 5 112 8577 46.99 717 721 167.2
D 12 218 732316 4154.38 725 704 176.1
D 9 1 171576 970.28 725 704 176.1
D 7 96 40723 227.24 725 704 176.1

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