ASTROSAT CZTI

Data Quality Report

Orbit 23545

Creation date: 2024-06-27T18:55:58.351759
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/AS1A07_011T01_9000003482_23545cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23545cztM0_level2_quad_clean.evt
Size (bytes)434,767,680100,267,200
Size414.6 MB 95.6 MB
Events in quadrant A3,017,691651,050
Events in quadrant B3,393,902660,014
Events in quadrant C3,128,963641,395
Events in quadrant D3,184,891631,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061
B061
C060
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01331
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01325328
B01445926
C01350520
D01410526

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A649260.092421%
B6494791.216508%
C6495530.816012%
D6493580.893270%

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 7545 6497 0 0 0.00% 0.00%
B 7545 6495 38 38 0.50% 0.59%
C 7545 6495 0 0 0.00% 0.00%
D 7545 6495 53 53 0.70% 0.82%

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 13 252 43905 277.21 770 753 155.7
A 13 254 11460 68.78 770 753 155.7
A 3 137 6973 39.96 770 753 155.7
B 3 64 171607 1148.16 769 749 148.8
B 0 189 122663 819.26 769 749 148.8
B 14 207 41490 273.78 769 749 148.8
C 14 238 120186 687.5 744 748 173.7
C 10 91 62141 353.39 744 748 173.7
C 7 247 32340 181.85 744 748 173.7
D 1 52 218515 1189.58 748 727 183.1
D 9 85 36642 196.17 748 727 183.1
D 2 234 28492 151.65 748 727 183.1

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