ASTROSAT CZTI

Data Quality Report

Orbit 19774

Creation date: 2024-06-27T18:06:52.639213
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/AS1A05_104T08_9000002954_19774cztM0_level2.evt modeM0/AS1A05_104T08_9000002954_19774cztM0_level2_quad_clean.evt
Size (bytes)584,962,56074,764,800
Size557.9 MB 71.3 MB
Events in quadrant A3,121,206479,411
Events in quadrant B3,202,126490,282
Events in quadrant C7,364,029411,747
Events in quadrant D3,602,388443,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131742
B0133002
C0260982
D0147862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6276250.398343%
B6276290.462078%
C6276146723.374761%
D6276971.545570%

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 7456 6277 2 2 0.03% 0.03%
B 7456 6277 8 8 0.11% 0.13%
C 7455 6276 1108 1108 14.86% 17.65%
D 7456 6277 72 72 0.97% 1.15%

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 38579 237.23 790 776 159.4
A 0 23 26865 163.72 790 776 159.4
A 15 192 10323 59.91 790 776 159.4
B 7 220 60978 394.67 794 774 152.5
B 12 111 18109 113.64 794 774 152.5
B 11 111 16149 100.79 794 774 152.5
C 3 233 4544403 28178.05 691 696 161.2
C 14 238 108320 667.44 691 696 161.2
C 4 175 7547 42.49 691 696 161.2
D 7 238 362900 1942.16 756 736 186.5
D 12 218 184814 987.15 756 736 186.5
D 1 52 135006 720.04 756 736 186.5

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