ASTROSAT CZTI

Data Quality Report

Orbit 06687

Creation date: 2024-06-27T15:10:22.209649
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/AS1G06_145T01_9000000914_06687cztM0_level2.evt modeM0/AS1G06_145T01_9000000914_06687cztM0_level2_quad_clean.evt
Size (bytes)551,543,04095,662,080
Size526.0 MB 91.2 MB
Events in quadrant A2,920,982630,017
Events in quadrant B3,181,207645,002
Events in quadrant C2,839,673640,493
Events in quadrant D7,340,019546,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129293
B0136422
C0127172
D0261122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226220.353357%
B6226751.204626%
C6226200.321234%
D622679812.817218%

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 7531 6227 2 2 0.03% 0.03%
B 7531 6227 17 17 0.23% 0.27%
C 7531 6227 0 0 0.00% 0.00%
D 7531 6227 616 616 8.18% 9.89%

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 8 15 58174 397.1 720 704 144.7
A 14 111 40909 277.81 720 704 144.7
A 4 2 23811 159.66 720 704 144.7
B 0 219 106146 770.09 733 714 136.9
B 4 81 85446 618.89 733 714 136.9
B 4 170 40126 287.87 733 714 136.9
C 8 128 12206 69.27 720 725 165.7
C 8 112 6491 34.79 720 725 165.7
C 13 61 5677 29.88 720 725 165.7
D 8 195 2187806 13398.96 673 652 163.2
D 2 33 1511818 9257.72 673 652 163.2
D 2 152 376453 2302.23 673 652 163.2

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