ASTROSAT CZTI

Data Quality Report

Orbit 20501

Creation date: 2024-06-27T18:16:06.115752
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_115T01_9000003030_20501cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20501cztM0_level2_quad_clean.evt
Size (bytes)671,307,84078,491,520
Size640.2 MB 74.9 MB
Events in quadrant A3,915,229480,810
Events in quadrant B4,175,745486,809
Events in quadrant C3,887,530461,933
Events in quadrant D7,810,075391,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169442
B0174112
C0167072
D0285485

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79784856.079218%
B79785146.442717%
C79784856.079218%
D7978167420.982702%

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 8148 7978 5 5 0.06% 0.06%
B 8148 7978 8 8 0.10% 0.10%
C 8148 7978 0 0 0.00% 0.00%
D 8148 7978 1253 1253 15.38% 15.71%

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 5 16 103318 506.35 988 961 202.1
A 12 96 10423 46.81 988 961 202.1
A 0 226 8588 37.73 988 961 202.1
B 0 189 88313 455.78 989 960 191.7
B 7 220 63334 325.45 989 960 191.7
B 0 197 58930 302.47 989 960 191.7
C 14 238 145523 643.7 953 955 224.6
C 8 128 10924 44.39 953 955 224.6
C 13 61 6649 25.35 953 955 224.6
D 2 16 1533368 6881.26 906 875 222.7
D 1 52 1391598 6244.68 906 875 222.7
D 5 222 741114 3323.85 906 875 222.7

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