ASTROSAT CZTI

Data Quality Report

Orbit 07435

Creation date: 2024-06-27T15:19:43.627999
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/AS1A02_108T01_9000001024_07435cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07435cztM0_level2_quad_clean.evt
Size (bytes)1,201,181,760197,277,120
Size1.1 GB 188.1 MB
Events in quadrant A7,660,4921,218,047
Events in quadrant B7,821,8011,239,572
Events in quadrant C10,728,1261,204,273
Events in quadrant D9,040,7241,163,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341694
B0343253
C0427713
D0385933

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166752531.517241%
B166752421.451274%
C166753131.877061%
D166754932.956522%

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 19890 16678 1 1 0.01% 0.01%
B 19890 16678 4 4 0.02% 0.02%
C 19890 16679 16 16 0.08% 0.10%
D 19889 16676 220 220 1.11% 1.32%

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 121187 302.67 1941 1896 394.1
A 15 234 56250 137.91 1941 1896 394.1
A 0 226 18414 41.91 1941 1896 394.1
B 0 214 107746 283.97 1952 1900 372.7
B 4 81 88372 232.0 1952 1900 372.7
B 12 111 39136 99.9 1952 1900 372.7
C 9 68 3321264 7590.16 1892 1900 437.3
C 1 16 20126 41.68 1892 1900 437.3
C 13 61 14635 29.12 1892 1900 437.3
D 15 47 831508 1804.87 1885 1828 459.7
D 2 14 318181 688.19 1885 1828 459.7
D 1 52 211708 456.57 1885 1828 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