ASTROSAT CZTI

Data Quality Report

Orbit 28138

Creation date: 2024-06-27T19:48:28.857751
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/AS1A10_045T04_9000004066_28138cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28138cztM0_level2_quad_clean.evt
Size (bytes)540,823,680110,998,080
Size515.8 MB 105.9 MB
Events in quadrant A3,507,338739,579
Events in quadrant B3,477,155770,019
Events in quadrant C3,411,274717,478
Events in quadrant D5,534,922673,613

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144550
B0143280
C0141410
D0207910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6611610.922705%
B6611630.952957%
C6611891.346241%
D66115638.516110%

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 7881 6612 14 14 0.18% 0.21%
B 7881 6612 4 4 0.05% 0.06%
C 7881 6612 0 0 0.00% 0.00%
D 7881 6612 472 472 5.99% 7.14%

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 4 2 84398 481.02 871 858 173.7
A 12 16 43931 248.01 871 858 173.7
A 12 194 12711 68.25 871 858 173.7
B 0 183 21386 125.7 875 854 163.3
B 12 111 19693 115.34 875 854 163.3
B 11 111 17503 101.93 875 854 163.3
C 14 238 137033 701.64 836 842 194.1
C 1 16 7905 36.39 836 842 194.1
C 3 233 7511 34.36 836 842 194.1
D 1 52 1523522 8147.63 793 770 186.9
D 2 250 569589 3043.52 793 770 186.9
D 8 195 311335 1661.71 793 770 186.9

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