ASTROSAT CZTI

Data Quality Report

Orbit 31844

Creation date: 2024-06-27T20:33:24.874629
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/AS1A10_109T01_9000004646_31844cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31844cztM0_level2_quad_clean.evt
Size (bytes)611,792,640115,352,640
Size583.5 MB 110.0 MB
Events in quadrant A3,959,836784,161
Events in quadrant B5,668,846774,001
Events in quadrant C4,387,267735,328
Events in quadrant D4,050,899725,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162082
B0215052
C0175622
D0163902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68141662.436161%
B68152493.653705%
C68153955.796038%
D68151221.790169%

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 9274 6816 0 0 0.00% 0.00%
B 9275 6817 1 1 0.01% 0.01%
C 9275 6817 79 79 0.85% 1.16%
D 9275 6817 9 9 0.10% 0.13%

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 13 254 10653 47.78 1027 1012 201.8
A 3 137 9309 41.12 1027 1012 201.8
A 0 226 8616 37.69 1027 1012 201.8
B 6 159 1765133 9506.01 990 971 185.6
B 12 111 22179 114.28 990 971 185.6
B 11 111 20466 105.05 990 971 185.6
C 0 10 452844 2068.76 944 955 218.4
C 14 238 161058 732.96 944 955 218.4
C 3 233 53180 239.09 944 955 218.4
D 8 195 211572 926.78 980 963 227.2
D 12 233 55704 240.89 980 963 227.2
D 2 120 30479 129.88 980 963 227.2

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