ASTROSAT CZTI

Data Quality Report

Orbit 07477

Creation date: 2024-06-27T15:20:16.155647
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/AS1G06_116T01_9000001026_07477cztM0_level2.evt modeM0/AS1G06_116T01_9000001026_07477cztM0_level2_quad_clean.evt
Size (bytes)1,032,007,680277,436,160
Size984.2 MB 264.6 MB
Events in quadrant A7,528,9321,832,243
Events in quadrant B7,375,5111,874,255
Events in quadrant C6,892,8051,843,252
Events in quadrant D8,383,9881,760,720

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337933
B0327715
C0321673
D0351303

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158452821.779741%
B158441330.839434%
C15845720.454402%
D158452101.325339%

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 17895 15847 144 144 0.80% 0.91%
B 17895 15848 12 12 0.07% 0.08%
C 17895 15848 4 4 0.02% 0.03%
D 17895 15846 101 101 0.56% 0.64%

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 15 239 570338 1578.15 1788 1747 360.3
A 8 15 32718 85.96 1788 1747 360.3
A 15 234 32698 85.9 1788 1747 360.3
B 0 214 286912 829.07 1806 1761 343.9
B 12 111 35234 97.32 1806 1761 343.9
B 11 111 27963 76.18 1806 1761 343.9
C 10 22 30399 71.34 1744 1749 401.6
C 1 16 27895 65.1 1744 1749 401.6
C 9 68 20844 47.54 1744 1749 401.6
D 12 221 564558 1332.65 1738 1681 422.4
D 8 195 266937 628.01 1738 1681 422.4
D 2 14 239966 564.16 1738 1681 422.4

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