ASTROSAT CZTI

Data Quality Report

Orbit 43618

Creation date: 2024-06-27T22:53:44.258303
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/AS1A12_095T02_9000005892_43618cztM0_level2.fits modeM0/AS1A12_095T02_9000005892_43618cztM0_level2_quad_clean.evt
Size (bytes)1,101,199,68080,190,720
Size1.0 GB 76.5 MB
Events in quadrant A11,342,241501,993
Events in quadrant B4,612,700714,347
Events in quadrant C13,979,508304,227
Events in quadrant D10,381,163496,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378041
B0177081
C0455641
D0349281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5809354961.094853%
B58093125.370976%
C5809496985.539680%
D5809305052.504734%

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 6974 5809 3343 3343 47.94% 57.55%
B 6974 5809 169 169 2.42% 2.91%
C 6973 5808 4856 4856 69.64% 83.61%
D 6974 5809 2479 2479 35.55% 42.68%

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 0 50 7918336 76738.86 500 490 103.2
A 14 239 757659 7338.4 500 490 103.2
A 10 83 528978 5122.05 500 490 103.2
B 0 155 569569 4296.04 693 674 132.4
B 4 206 416792 3142.34 693 674 132.4
B 5 235 398740 3006.02 693 674 132.4
C 15 174 7068248 97198.47 312 314 72.7
C 15 142 1955447 26887.06 312 314 72.7
C 3 233 1329688 18281.6 312 314 72.7
D 4 216 2170438 13722.14 560 544 158.1
D 4 212 883343 5582.71 560 544 158.1
D 4 235 769168 4860.68 560 544 158.1

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