ASTROSAT CZTI

Data Quality Report

Orbit 16755

Creation date: 2024-06-27T17:27:15.049381
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_202T01_9000002484_16755cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16755cztM0_level2_quad_clean.evt
Size (bytes)490,584,960102,648,960
Size467.9 MB 97.9 MB
Events in quadrant A2,921,147682,940
Events in quadrant B3,257,027689,194
Events in quadrant C3,365,426660,155
Events in quadrant D4,885,318635,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129611
B0138971
C0141571
D0188181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6315330.522565%
B63151131.789390%
C6315811.282660%
D63152774.386382%

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 6556 6317 5 5 0.08% 0.08%
B 6556 6317 15 15 0.23% 0.24%
C 6556 6317 1 1 0.02% 0.02%
D 6556 6317 186 186 2.84% 2.94%

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 15 174 41109 267.68 744 726 150.9
A 3 1 23599 151.62 744 726 150.9
A 0 226 6603 38.96 744 726 150.9
B 10 16 159387 1112.0 742 724 142.7
B 15 35 61233 424.08 742 724 142.7
B 0 189 43958 303.01 742 724 142.7
C 3 233 325006 1953.54 711 714 166.0
C 0 207 154578 926.88 711 714 166.0
C 14 238 108171 647.32 711 714 166.0
D 1 52 1655872 9419.85 711 685 175.7
D 11 176 410659 2333.21 711 685 175.7
D 2 33 55417 311.49 711 685 175.7

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