ASTROSAT CZTI

Data Quality Report

Orbit 20660

Creation date: 2024-06-27T18:18:00.117890
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_20660cztM0_level2.evt modeM0/AS1A05_022T09_9000003058_20660cztM0_level2_quad_clean.evt
Size (bytes)532,270,080138,588,480
Size507.6 MB 132.2 MB
Events in quadrant A3,674,397921,885
Events in quadrant B4,199,922916,904
Events in quadrant C3,747,466906,361
Events in quadrant D3,947,644889,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165572
B0181102
C0165322
D0175582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8110400.493218%
B81101882.318126%
C8110690.850801%
D81111201.479472%

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 8865 8113 0 0 0.00% 0.00%
B 8865 8113 49 49 0.55% 0.60%
C 8865 8113 0 0 0.00% 0.00%
D 8866 8114 73 73 0.82% 0.90%

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 15215 74.55 948 927 191.7
A 8 205 9523 44.85 948 927 191.7
A 0 226 8371 38.84 948 927 191.7
B 7 220 325908 1836.57 941 917 177.0
B 6 36 41568 229.72 941 917 177.0
B 0 214 30758 168.64 941 917 177.0
C 14 238 141454 658.59 912 917 213.4
C 7 247 29166 132.38 912 917 213.4
C 5 4 11645 50.27 912 917 213.4
D 1 239 170005 759.85 917 889 222.6
D 1 52 115145 513.36 917 889 222.6
D 13 153 87833 390.65 917 889 222.6

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