ASTROSAT CZTI

Data Quality Report

Orbit 00206

Creation date: 2024-06-27T13:57:52.945353
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/AS1P01_140T01_9000000018_00206cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00206cztM0_level2_quad_clean.evt
Size (bytes)934,764,48054,440,640
Size891.5 MB 51.9 MB
Events in quadrant A8,643,159286,386
Events in quadrant B6,589,959328,947
Events in quadrant C6,111,306321,849
Events in quadrant D6,583,794309,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232116
B0232116
C0232116
D0232116

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03317
B03216
C03216
D03216

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06008230200
B04761623957
C04471522496
D04761123972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A573486515.085455%
B573540.069747%
C573710.017431%
D5734220.383676%

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 7407 5740 1295 1295 17.48% 22.56%
B 7407 5740 61 61 0.82% 1.06%
C 7407 5742 30 30 0.41% 0.52%
D 7407 5741 203 203 2.74% 3.54%

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 66 2186804 5974.17 1636 1618 365.8
A 13 17 66695 177.92 1636 1618 365.8
A 0 6 36830 96.27 1636 1618 365.8
B 5 2 15001 32.91 1711 1728 403.3
B 0 183 11031 23.07 1711 1728 403.3
B 8 5 9974 20.45 1711 1728 403.3
C 0 186 24704 53.64 1541 1595 430.8
C 9 54 14754 30.55 1541 1595 430.8
C 1 1 12778 25.96 1541 1595 430.8
D 1 4 328700 711.66 1511 1559 459.7
D 1 5 99742 213.59 1511 1559 459.7
D 9 52 83783 178.87 1511 1559 459.7

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