ASTROSAT CZTI

Data Quality Report

Orbit 34456

Creation date: 2022-02-11T05:53:43.300488
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_058T06_9000004920_34456cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34456cztM0_level2_quad_clean.evt
Size (bytes)433,923,84062,648,640
Size413.8 MB 59.7 MB
Events in quadrant A2,480,230392,464
Events in quadrant B3,051,853399,570
Events in quadrant C2,542,186393,573
Events in quadrant D4,732,588365,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106102
B0123561
C0105521
D0175771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4931681.379031%
B49311593.224498%
C493150.101399%
D49311683.407017%

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 6452 4932 51 51 0.79% 1.03%
B 6452 4932 92 92 1.43% 1.87%
C 6452 4932 0 0 0.00% 0.00%
D 6452 4932 170 170 2.63% 3.45%

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 15 169 192955 1607.12 584 571 119.7
A 10 83 21409 174.07 584 571 119.7
A 13 254 8810 68.83 584 571 119.7
B 5 172 496234 4407.46 580 565 112.5
B 14 207 111140 983.23 580 565 112.5
B 4 171 38953 341.34 580 565 112.5
C 15 214 205172 1533.39 575 578 133.4
C 3 233 41547 307.05 575 578 133.4
C 14 67 27101 198.78 575 578 133.4
D 14 52 942267 6769.33 566 548 139.1
D 8 195 850715 6111.23 566 548 139.1
D 7 80 208584 1495.42 566 548 139.1

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