ASTROSAT CZTI

Data Quality Report

Orbit 20298

Creation date: 2024-06-27T18:13:35.183089
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_174T01_9000003008_20298cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20298cztM0_level2_quad_clean.evt
Size (bytes)529,741,44083,528,640
Size505.2 MB 79.7 MB
Events in quadrant A3,503,483508,261
Events in quadrant B4,663,445515,814
Events in quadrant C3,577,038499,458
Events in quadrant D3,800,378494,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152381
B0185611
C0151801
D0162001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73401602.179837%
B73415096.933660%
C73411702.315761%
D73411261.716387%

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 7595 7341 3 3 0.04% 0.04%
B 7596 7342 243 243 3.20% 3.31%
C 7596 7342 0 0 0.00% 0.00%
D 7596 7342 6 6 0.08% 0.08%

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 14 238 35672 191.34 895 872 181.9
A 11 29 15335 79.52 895 872 181.9
A 13 254 10573 53.34 895 872 181.9
B 4 142 675977 4012.12 868 848 168.3
B 7 220 245242 1452.37 868 848 168.3
B 0 197 234550 1388.83 868 848 168.3
C 14 238 132755 650.13 859 864 202.9
C 0 207 68765 334.7 859 864 202.9
C 3 233 20553 97.05 859 864 202.9
D 1 52 406160 1898.68 880 855 213.5
D 2 234 33844 154.54 880 855 213.5
D 7 223 23483 106.0 880 855 213.5

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