ASTROSAT CZTI

Data Quality Report

Orbit 33711

Creation date: 2024-06-27T20:52:06.583101
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/AS1T04_088T01_9000004814_33711cztM0_level2.evt modeM0/AS1T04_088T01_9000004814_33711cztM0_level2_quad_clean.evt
Size (bytes)534,329,28058,775,040
Size509.6 MB 56.1 MB
Events in quadrant A2,898,600356,095
Events in quadrant B3,620,045356,789
Events in quadrant C3,413,611355,202
Events in quadrant D5,884,863333,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120462
B0142951
C0135301
D0213061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5398561.037421%
B53981763.260467%
C53981232.278622%
D53982735.057429%

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 7310 5399 33 33 0.45% 0.61%
B 7310 5399 122 122 1.67% 2.26%
C 7310 5398 97 97 1.33% 1.80%
D 7310 5399 233 233 3.19% 4.32%

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 15 237 182990 1323.69 693 680 137.7
A 14 4 17086 119.12 693 680 137.7
A 13 6 16330 113.63 693 680 137.7
B 5 172 622144 4901.41 683 669 126.8
B 0 219 68614 535.86 683 669 126.8
B 5 255 63351 494.36 683 669 126.8
C 15 214 248103 1608.04 676 683 153.9
C 0 10 196309 1271.42 676 683 153.9
C 14 254 161970 1048.24 676 683 153.9
D 1 52 1337493 7634.85 669 654 175.1
D 8 195 875622 4997.05 669 654 175.1
D 2 120 267821 1525.82 669 654 175.1

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