ASTROSAT CZTI

Data Quality Report

Orbit 25161

Creation date: 2024-06-27T19:14:27.229063
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_018T02_9000003684_25161cztM0_level2.evt modeM0/AS1A07_018T02_9000003684_25161cztM0_level2_quad_clean.evt
Size (bytes)554,892,480104,434,560
Size529.2 MB 99.6 MB
Events in quadrant A3,621,011669,338
Events in quadrant B3,765,460680,688
Events in quadrant C4,690,598652,570
Events in quadrant D4,223,273642,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157110
B0159600
C0192610
D0177150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74361181.586875%
B74371702.285868%
C74372533.401909%
D7437991.331182%

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 8531 7437 0 0 0.00% 0.00%
B 8532 7438 2 2 0.02% 0.03%
C 8532 7437 0 0 0.00% 0.00%
D 8532 7437 50 50 0.59% 0.67%

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 11 208 14381 71.04 934 915 189.5
A 13 254 11275 54.66 934 915 189.5
A 3 137 8720 41.18 934 915 189.5
B 4 80 71631 390.94 931 905 180.9
B 0 189 27008 144.28 931 905 180.9
B 12 111 22959 121.9 931 905 180.9
C 7 247 998754 4640.01 904 910 215.1
C 14 238 142945 660.47 904 910 215.1
C 7 87 13220 57.24 904 910 215.1
D 1 52 551203 2494.17 911 887 220.6
D 8 195 190006 857.14 911 887 220.6
D 2 234 32273 142.25 911 887 220.6

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