ASTROSAT CZTI

Data Quality Report

Orbit 40991

Creation date: 2024-06-27T22:23:03.625346
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/AS1A12_066T01_9000005584_40991cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40991cztM0_level2_quad_clean.evt
Size (bytes)875,851,200235,863,360
Size835.3 MB 224.9 MB
Events in quadrant A7,611,0771,591,476
Events in quadrant B8,253,6671,574,294
Events in quadrant C7,093,5081,549,544
Events in quadrant D8,324,0481,411,799

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313283
B0348313
C0302513
D0349283

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14692270.183773%
B146925723.893275%
C14692660.449224%
D146923212.184863%

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 17347 14694 6 6 0.03% 0.04%
B 17347 14694 424 424 2.44% 2.89%
C 17347 14694 55 55 0.32% 0.37%
D 17347 14694 289 289 1.67% 1.97%

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 10 83 1148250 3419.82 1643 1605 335.3
A 12 189 103524 303.97 1643 1605 335.3
A 13 254 22935 63.62 1643 1605 335.3
B 5 255 1830421 5860.58 1599 1554 312.1
B 0 229 135949 430.67 1599 1554 312.1
B 12 111 40261 124.04 1599 1554 312.1
C 15 214 613665 1658.58 1594 1603 369.0
C 0 10 177258 475.99 1594 1603 369.0
C 12 249 51282 134.62 1594 1603 369.0
D 13 249 1169766 3021.76 1593 1549 386.6
D 12 233 356768 918.82 1593 1549 386.6
D 2 249 312858 805.24 1593 1549 386.6

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