ASTROSAT CZTI

Data Quality Report

Orbit 20652

Creation date: 2024-06-27T18:17:52.242263
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/AS1A05_082T09_9000003054_20652cztM0_level2.evt modeM0/AS1A05_082T09_9000003054_20652cztM0_level2_quad_clean.evt
Size (bytes)550,998,720104,388,480
Size525.5 MB 99.6 MB
Events in quadrant A3,408,441701,984
Events in quadrant B3,926,514693,749
Events in quadrant C3,397,390660,115
Events in quadrant D5,496,197634,065

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145003
B0161282
C0143092
D0208765

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6770821.211226%
B67701472.171344%
C67701091.610044%
D67693354.949032%

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 7875 6770 1 1 0.01% 0.01%
B 7875 6770 24 24 0.30% 0.35%
C 7875 6770 0 0 0.00% 0.00%
D 7875 6770 197 197 2.50% 2.91%

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 13 252 10585 55.11 881 863 176.4
A 0 226 7910 39.95 881 863 176.4
A 13 210 7543 37.87 881 863 176.4
B 7 220 347548 2087.11 864 842 166.1
B 4 216 51551 305.26 864 842 166.1
B 0 190 32649 191.47 864 842 166.1
C 14 238 130078 674.83 825 830 191.5
C 7 247 25302 127.77 825 830 191.5
C 3 233 13189 64.53 825 830 191.5
D 1 52 1359411 6716.51 840 818 202.3
D 1 239 391309 1930.48 840 818 202.3
D 1 20 247969 1221.85 840 818 202.3

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