ASTROSAT CZTI

Data Quality Report

Orbit 11154

Creation date: 2024-06-27T16:08:56.895932
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/AS1A04_180T01_9000001622_11154cztM0_level2.evt modeM0/AS1A04_180T01_9000001622_11154cztM0_level2_quad_clean.evt
Size (bytes)626,175,36082,307,520
Size597.2 MB 78.5 MB
Events in quadrant A6,558,629487,977
Events in quadrant B4,708,828527,799
Events in quadrant C3,080,154522,797
Events in quadrant D4,164,727488,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257341679
B019054735
C014533600
D017605777

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01408
B01406
C01404
D01406

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6632105115.847407%
B66766519.751348%
C66781632.440851%
D66553014.522915%

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 7012 6682 582 582 8.30% 8.71%
B 7012 6732 210 210 2.99% 3.12%
C 7012 6725 1 1 0.01% 0.01%
D 7012 6693 106 106 1.51% 1.58%

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 8 5 2412277 15068.75 776 756 160.0
A 14 238 957532 5978.56 776 756 160.0
A 8 15 158841 987.82 776 756 160.0
B 10 16 830530 5378.21 795 776 154.3
B 4 239 556055 3599.15 795 776 154.3
B 15 204 83322 535.04 795 776 154.3
C 13 61 5809 27.15 788 790 184.9
C 9 204 3557 14.97 788 790 184.9
C 14 234 3311 13.64 788 790 184.9
D 1 52 488711 2567.15 783 758 190.1
D 2 14 160308 839.4 783 758 190.1
D 13 172 119332 623.82 783 758 190.1

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