ASTROSAT CZTI

Data Quality Report

Orbit 01089

Creation date: 2024-06-27T14:07:19.294131
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/AS1P01_997T02_9000000212_01089cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01089cztM0_level2_quad_clean.evt
Size (bytes)1,180,509,120103,000,320
Size1.1 GB 98.2 MB
Events in quadrant A10,000,994656,816
Events in quadrant B8,722,997681,016
Events in quadrant C8,396,255660,041
Events in quadrant D8,171,540637,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347532
B0308461
C0298741
D0292461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69515567.998849%
B6951300.431593%
C6951130.187023%
D69512363.395195%

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 7201 6951 1202 1202 16.69% 17.29%
B 7201 6952 383 383 5.32% 5.51%
C 7201 6951 284 284 3.94% 4.09%
D 7201 6952 471 471 6.54% 6.78%

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 4 32 2059062 4157.36 2064 2076 494.8
A 15 233 16662 29.48 2064 2076 494.8
A 11 79 9183 14.36 2064 2076 494.8
B 14 53 97543 182.08 2220 2226 523.5
B 5 249 43410 78.67 2220 2226 523.5
B 15 22 37830 68.01 2220 2226 523.5
C 15 241 331936 580.04 2043 2116 568.6
C 3 79 46284 77.68 2043 2116 568.6
C 3 111 35041 57.9 2043 2116 568.6
D 12 22 117832 183.51 2041 2045 631.0
D 2 16 76760 118.41 2041 2045 631.0
D 10 125 26177 38.25 2041 2045 631.0

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