ASTROSAT CZTI

Data Quality Report

Orbit 01109

Creation date: 2024-06-27T14:07:35.150740
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_997T02_9000000212_01109cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01109cztM0_level2_quad_clean.evt
Size (bytes)1,071,892,800103,201,920
Size1022.2 MB 98.4 MB
Events in quadrant A7,981,128669,044
Events in quadrant B8,409,726669,231
Events in quadrant C8,373,501657,515
Events in quadrant D7,241,095649,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285923
B0298602
C0297782
D0263972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6885100.145243%
B688590.130719%
C6885170.246914%
D6885150.217865%

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 8675 6887 129 129 1.49% 1.87%
B 8675 6887 137 137 1.58% 1.99%
C 8675 6887 203 203 2.34% 2.95%
D 8675 6887 94 94 1.08% 1.36%

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 15 233 56891 111.32 2046 2060 492.6
A 4 32 42089 81.27 2046 2060 492.6
A 0 253 15746 27.79 2046 2060 492.6
B 2 32 119770 230.86 2152 2160 509.4
B 4 187 38974 72.26 2152 2160 509.4
B 15 22 36459 67.33 2152 2160 509.4
C 15 241 339383 619.0 1959 2031 545.0
C 10 207 315687 575.53 1959 2031 545.0
C 3 111 25796 43.61 1959 2031 545.0
D 2 216 116109 200.6 1878 1936 569.2
D 10 125 61086 103.92 1878 1936 569.2
D 10 215 29671 48.73 1878 1936 569.2

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