ASTROSAT CZTI

Data Quality Report

Orbit 08758

Creation date: 2024-06-27T15:36:49.136586
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/AS1A03_038T01_9000001218_08758cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08758cztM0_level2_quad_clean.evt
Size (bytes)432,057,60088,914,240
Size412.0 MB 84.8 MB
Events in quadrant A3,093,773564,290
Events in quadrant B3,056,970575,622
Events in quadrant C3,013,863570,005
Events in quadrant D3,493,577544,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133053
B0132562
C0131482
D0147232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274520.828817%
B6274540.860695%
C6274340.541919%
D62751472.342629%

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 7489 6275 3 3 0.04% 0.05%
B 7489 6274 4 4 0.05% 0.06%
C 7489 6274 3 3 0.04% 0.05%
D 7490 6275 84 84 1.12% 1.34%

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 13 251 98800 629.3 773 760 155.8
A 5 16 14622 88.98 773 760 155.8
A 0 226 7121 40.83 773 760 155.8
B 10 16 37585 249.37 776 758 147.7
B 12 111 16030 103.41 776 758 147.7
B 4 173 14117 90.46 776 758 147.7
C 14 234 31072 171.11 762 768 177.1
C 13 61 5669 27.67 762 768 177.1
C 12 4 4518 21.17 762 768 177.1
D 1 52 454123 2348.79 750 734 193.0
D 2 152 147671 761.21 750 734 193.0
D 2 234 19196 95.64 750 734 193.0

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