ASTROSAT CZTI

Data Quality Report

Orbit 31352

Creation date: 2024-06-27T20:27:08.333254
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/AS1A10_101T01_9000004546_31352cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31352cztM0_level2_quad_clean.evt
Size (bytes)482,031,36086,725,440
Size459.7 MB 82.7 MB
Events in quadrant A3,012,570579,896
Events in quadrant B4,517,893575,622
Events in quadrant C3,503,701529,811
Events in quadrant D3,178,266543,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01221376
B017550172
C01417985
D01289672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5692500.878426%
B56731091.921382%
C56952033.564530%
D5698300.526501%

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 7026 5727 0 0 0.00% 0.00%
B 7027 5723 3 3 0.04% 0.05%
C 7027 5726 44 44 0.63% 0.77%
D 7027 5727 1 1 0.01% 0.02%

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 13 254 13004 79.47 780 766 154.0
A 3 137 7246 42.08 780 766 154.0
A 0 226 6730 38.73 780 766 154.0
B 6 159 1489271 10496.66 754 737 141.8
B 0 190 44845 311.04 754 737 141.8
B 4 80 17580 118.77 754 737 141.8
C 3 233 300569 1808.18 717 722 165.8
C 0 10 181885 1092.47 717 722 165.8
C 14 238 144964 869.83 717 722 165.8
D 8 195 338328 1927.28 742 726 175.2
D 2 250 28003 155.72 742 726 175.2
D 2 234 20324 111.88 742 726 175.2

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