ASTROSAT CZTI

Data Quality Report

Orbit 37377

Creation date: 2024-06-27T21:39:12.130560
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/AS1T05_048T01_9000005318_37377cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37377cztM0_level2_quad_clean.evt
Size (bytes)575,285,76054,181,440
Size548.6 MB 51.7 MB
Events in quadrant A2,733,321337,605
Events in quadrant B2,755,716346,653
Events in quadrant C3,275,289347,697
Events in quadrant D8,321,777258,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108893
B0110502
C0125122
D0282162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4973100.201086%
B4973430.864669%
C49731873.760306%
D4973171934.566660%

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 7096 4974 3 3 0.04% 0.06%
B 7096 4974 21 21 0.30% 0.42%
C 7096 4974 150 150 2.11% 3.02%
D 7096 4974 1641 1641 23.13% 32.99%

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 270647 2200.56 616 606 122.7
A 13 248 63339 511.21 616 606 122.7
A 13 6 8139 61.39 616 606 122.7
B 5 172 123953 1063.25 613 597 116.0
B 0 229 60161 513.41 613 597 116.0
B 0 190 46296 393.9 613 597 116.0
C 1 23 583604 4217.62 599 605 138.2
C 15 214 212643 1533.96 599 605 138.2
C 0 10 89104 640.23 599 605 138.2
D 12 235 4811929 36096.69 545 530 133.3
D 12 227 898362 6735.83 545 530 133.3
D 2 249 376128 2817.86 545 530 133.3

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