ASTROSAT CZTI

Data Quality Report

Orbit 20425

Creation date: 2024-06-27T18:15:15.843376
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_188T01_9000003018_20425cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20425cztM0_level2_quad_clean.evt
Size (bytes)497,453,76079,974,720
Size474.4 MB 76.3 MB
Events in quadrant A3,245,208506,349
Events in quadrant B3,343,086514,061
Events in quadrant C3,302,549492,139
Events in quadrant D4,747,547469,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132702
B0134482
C0132892
D0181932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295520.826052%
B6295911.445592%
C62951171.858618%
D62952554.050834%

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 7570 6296 0 0 0.00% 0.00%
B 7570 6295 2 2 0.03% 0.03%
C 7570 6296 0 0 0.00% 0.00%
D 7570 6296 186 186 2.46% 2.95%

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 20009 116.59 836 820 164.6
A 0 226 7206 38.8 836 820 164.6
A 3 137 6510 34.57 836 820 164.6
B 10 245 34830 219.35 833 815 155.1
B 12 111 18307 112.8 833 815 155.1
B 11 111 16728 102.62 833 815 155.1
C 14 238 129411 699.97 807 813 183.7
C 3 233 16971 87.95 807 813 183.7
C 13 61 5774 27.0 807 813 183.7
D 2 16 1280299 6630.93 807 785 193.0
D 13 153 289632 1496.91 807 785 193.0
D 1 52 138036 711.29 807 785 193.0

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