ASTROSAT CZTI

Data Quality Report

Orbit 33658

Creation date: 2024-06-27T20:51:11.655406
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/AS1T04_076T01_9000004810_33658cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33658cztM0_level2_quad_clean.evt
Size (bytes)479,301,12077,860,800
Size457.1 MB 74.3 MB
Events in quadrant A3,037,379501,664
Events in quadrant B3,880,597500,163
Events in quadrant C3,097,184510,026
Events in quadrant D4,146,254479,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124332
B0149441
C0123891
D0159941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52261182.257941%
B52264097.826253%
C5226851.626483%
D52262855.453502%

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 7019 5227 104 104 1.48% 1.99%
B 7018 5226 332 332 4.73% 6.35%
C 7019 5227 66 66 0.94% 1.26%
D 7019 5227 251 251 3.58% 4.80%

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 15 237 629912 5093.26 610 597 123.6
A 15 169 21951 172.83 610 597 123.6
A 9 143 15589 121.34 610 597 123.6
B 5 172 1352905 11711.3 600 583 115.5
B 15 222 33331 283.6 600 583 115.5
B 5 200 27654 234.44 600 583 115.5
C 3 233 249711 1802.56 599 605 138.2
C 15 214 243813 1759.88 599 605 138.2
C 0 10 211378 1525.18 599 605 138.2
D 8 195 557962 3597.21 583 571 155.0
D 12 6 420834 2712.23 583 571 155.0
D 10 118 318704 2053.12 583 571 155.0

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