ASTROSAT CZTI

Data Quality Report

Orbit 24178

Creation date: 2024-06-27T19:03:08.885243
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/AS1A07_067T01_9000003578_24178cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24178cztM0_level2_quad_clean.evt
Size (bytes)381,375,36052,502,400
Size363.7 MB 50.1 MB
Events in quadrant A2,106,726324,707
Events in quadrant B2,128,150330,228
Events in quadrant C2,137,320318,894
Events in quadrant D4,881,278309,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090311
B090421
C091122
D0174111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43441122.578269%
B43451202.761795%
C43441563.591160%
D4344120327.693370%

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 4584 4345 0 0 0.00% 0.00%
B 4585 4346 0 0 0.00% 0.00%
C 4584 4344 10 10 0.22% 0.23%
D 4583 4344 1018 1018 22.21% 23.43%

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 6353 51.75 546 532 112.5
A 3 137 5022 39.92 546 532 112.5
A 0 226 4607 36.23 546 532 112.5
B 12 111 12973 119.33 539 525 104.3
B 11 111 11521 105.41 539 525 104.3
B 14 111 9915 90.01 539 525 104.3
C 14 238 81500 663.22 517 520 122.1
C 2 16 38938 314.64 517 520 122.1
C 13 61 3665 25.76 517 520 122.1
D 7 238 2612451 22913.57 458 443 114.0
D 12 218 285349 2499.31 458 443 114.0
D 8 195 172150 1506.28 458 443 114.0

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