ASTROSAT CZTI

Data Quality Report

Orbit 17476

Creation date: 2024-06-27T17:37:00.694869
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_198T01_9000002586_17476cztM0_level2.evt modeM0/AS1A05_198T01_9000002586_17476cztM0_level2_quad_clean.evt
Size (bytes)598,665,600104,227,200
Size570.9 MB 99.4 MB
Events in quadrant A3,874,118665,790
Events in quadrant B4,126,514669,261
Events in quadrant C3,866,402647,519
Events in quadrant D5,725,337621,923

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168322
B0174202
C0164592
D0223202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7933961.210135%
B79341922.419965%
C79341291.625914%
D79344755.986892%

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 8383 7935 14 14 0.17% 0.18%
B 8384 7936 21 21 0.25% 0.26%
C 8384 7936 0 0 0.00% 0.00%
D 8384 7936 331 331 3.95% 4.17%

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 15 174 149555 755.92 964 943 196.6
A 13 210 9318 42.6 964 943 196.6
A 0 226 8352 37.69 964 943 196.6
B 7 220 158366 850.35 962 938 185.1
B 0 189 49003 259.62 962 938 185.1
B 15 35 33469 175.72 962 938 185.1
C 14 238 141010 646.4 923 928 216.7
C 5 218 87385 398.95 923 928 216.7
C 5 219 21476 94.82 923 928 216.7
D 13 189 978769 4320.37 921 891 226.3
D 10 70 588672 2596.88 921 891 226.3
D 7 238 508349 2242.0 921 891 226.3

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