ASTROSAT CZTI

Data Quality Report

Orbit 20661

Creation date: 2024-06-27T18:18:00.890326
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_022T09_9000003058_20661cztM0_level2.evt modeM0/AS1A05_022T09_9000003058_20661cztM0_level2_quad_clean.evt
Size (bytes)546,341,760135,691,200
Size521.0 MB 129.4 MB
Events in quadrant A3,651,676902,823
Events in quadrant B4,128,342900,021
Events in quadrant C3,696,595887,032
Events in quadrant D4,524,314862,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164302
B0177422
C0163282
D0192152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8026560.697732%
B80271812.254890%
C80271051.308085%
D80273113.874424%

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 8816 8028 5 5 0.06% 0.06%
B 8817 8029 46 46 0.52% 0.57%
C 8817 8029 0 0 0.00% 0.00%
D 8817 8029 196 196 2.22% 2.44%

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 5 16 40609 209.42 935 912 189.6
A 8 205 12952 63.52 935 912 189.6
A 0 226 8088 37.86 935 912 189.6
B 7 220 301984 1715.19 931 906 175.5
B 3 64 61713 346.41 931 906 175.5
B 12 111 21397 116.73 931 906 175.5
C 14 238 141520 661.8 903 907 212.5
C 7 247 21231 95.66 903 907 212.5
C 13 61 6254 25.17 903 907 212.5
D 1 52 631624 2903.17 897 869 217.3
D 2 165 232035 1063.98 897 869 217.3
D 13 153 70596 320.93 897 869 217.3

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