ASTROSAT CZTI

Data Quality Report

Orbit 24026

Creation date: 2024-06-27T19:01:16.914530
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/AS1A07_165T01_9000003558_24026cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24026cztM0_level2_quad_clean.evt
Size (bytes)477,984,960142,784,640
Size455.8 MB 136.2 MB
Events in quadrant A3,322,614984,264
Events in quadrant B3,625,381995,821
Events in quadrant C3,479,647958,943
Events in quadrant D3,614,975940,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139212
B0146482
C0144722
D0147512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6389220.344342%
B63891111.737361%
C6389921.439975%
D6389340.532165%

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 7614 6390 0 0 0.00% 0.00%
B 7614 6390 42 42 0.55% 0.66%
C 7614 6390 4 4 0.05% 0.06%
D 7614 6390 8 8 0.11% 0.13%

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 6 16 18938 107.11 854 838 169.0
A 13 254 8747 46.8 854 838 169.0
A 3 1 7952 42.1 854 838 169.0
B 0 197 236342 1519.01 844 825 155.0
B 0 245 21279 131.92 844 825 155.0
B 0 189 19091 117.81 844 825 155.0
C 14 238 133897 704.36 825 830 188.9
C 0 239 119196 626.55 825 830 188.9
C 7 247 11851 58.34 825 830 188.9
D 8 195 256189 1274.15 840 819 200.4
D 1 52 81922 404.66 840 819 200.4
D 2 82 64092 315.7 840 819 200.4

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