ASTROSAT CZTI

Data Quality Report

Orbit 18630

Creation date: 2024-06-27T17:52:42.759022
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/AS1C04_001T01_9000002784_18630cztM0_level2.evt modeM0/AS1C04_001T01_9000002784_18630cztM0_level2_quad_clean.evt
Size (bytes)469,005,120133,266,240
Size447.3 MB 127.1 MB
Events in quadrant A3,236,961895,968
Events in quadrant B3,211,768923,777
Events in quadrant C3,731,214901,601
Events in quadrant D3,596,700876,228

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137772
B0135132
C0152922
D0149772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6287991.574678%
B6287831.320185%
C62871933.069827%
D62871502.385876%

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 7542 6288 29 29 0.38% 0.46%
B 7542 6288 1 1 0.01% 0.02%
C 7542 6288 29 29 0.38% 0.46%
D 7542 6288 43 43 0.57% 0.68%

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 6 16 138962 869.87 794 779 158.9
A 9 143 32636 200.54 794 779 158.9
A 13 254 9290 53.57 794 779 158.9
B 0 229 22298 145.01 799 781 148.4
B 0 189 18263 117.82 799 781 148.4
B 12 111 17012 109.39 799 781 148.4
C 3 233 432181 2406.22 783 790 179.3
C 14 238 123195 682.75 783 790 179.3
C 9 54 112894 625.3 783 790 179.3
D 1 52 285871 1517.69 786 762 187.9
D 7 238 160006 847.69 786 762 187.9
D 14 34 105429 557.16 786 762 187.9

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