ASTROSAT CZTI

Data Quality Report

Orbit 38235

Creation date: 2024-06-27T21:50:06.597807
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_145T01_9000005370_38235cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38235cztM0_level2_quad_clean.evt
Size (bytes)394,603,200100,434,240
Size376.3 MB 95.8 MB
Events in quadrant A3,263,434669,613
Events in quadrant B2,794,001691,427
Events in quadrant C2,940,096658,137
Events in quadrant D5,145,121604,871

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133613
B0123902
C0124102
D0196602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5974230.385002%
B597470.117174%
C5974280.468698%
D59741091.824573%

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 8839 5976 15 15 0.17% 0.25%
B 8839 5976 2 2 0.02% 0.03%
C 8839 5976 21 21 0.24% 0.35%
D 8839 5976 84 84 0.95% 1.41%

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 408490 3032.4 668 654 134.5
A 12 16 124523 921.01 668 654 134.5
A 12 189 65336 480.93 668 654 134.5
B 4 232 70400 545.26 664 646 127.9
B 5 172 55312 427.32 664 646 127.9
B 0 230 22652 172.02 664 646 127.9
C 15 214 251204 1652.93 650 655 151.6
C 2 16 90825 594.87 650 655 151.6
C 14 254 19224 122.5 650 655 151.6
D 10 203 1628711 10285.86 645 625 158.3
D 7 38 268901 1694.9 645 625 158.3
D 2 249 260313 1640.65 645 625 158.3

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