ASTROSAT CZTI

Data Quality Report

Orbit 13371

Creation date: 2024-06-27T16:37:50.731517
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_176T04_9000001964_13371cztM0_level2.evt modeM0/AS1A04_176T04_9000001964_13371cztM0_level2_quad_clean.evt
Size (bytes)374,008,32063,290,880
Size356.7 MB 60.4 MB
Events in quadrant A2,420,982395,455
Events in quadrant B2,583,275407,748
Events in quadrant C2,402,689400,139
Events in quadrant D3,588,064370,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104842
B0108441
C0104401
D0139271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4874771.579811%
B4874871.784982%
C4874591.210505%
D48741803.693065%

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 5960 4875 3 3 0.05% 0.06%
B 5960 4875 14 14 0.23% 0.29%
C 5960 4876 0 0 0.00% 0.00%
D 5960 4875 90 90 1.51% 1.85%

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 9 143 71931 578.83 605 590 123.2
A 1 162 10303 78.81 605 590 123.2
A 15 69 6153 45.14 605 590 123.2
B 3 64 88151 762.28 605 591 114.9
B 4 142 34903 298.71 605 591 114.9
B 0 230 28693 244.65 605 591 114.9
C 14 220 74730 547.6 586 591 135.4
C 3 233 40404 294.06 586 591 135.4
C 13 61 4232 26.89 586 591 135.4
D 1 52 805454 5797.12 575 558 138.8
D 14 34 304270 2187.43 575 558 138.8
D 8 195 141446 1014.72 575 558 138.8

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