ASTROSAT CZTI

Data Quality Report

Orbit 47870

Creation date: 2024-08-04T17:13:49.099454
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/AS1A09_038T22_9000006368_47870cztM0_level2.fits modeM0/AS1A09_038T22_9000006368_47870cztM0_level2_quad_clean.evt
Size (bytes)498,205,440116,611,200
Size475.1 MB 111.2 MB
Events in quadrant A6,903,518741,697
Events in quadrant B3,447,753777,116
Events in quadrant C3,243,654787,051
Events in quadrant D4,270,573708,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253150
B0157190
C0153610
D0178390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74204105.525606%
B74213064.123433%
C74211251.684409%
D74211862.506401%

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 7420 7420 0 0 0.00% 0.00%
B 7421 7421 8 8 0.11% 0.11%
C 7421 7421 0 0 0.00% 0.00%
D 7421 7421 52 52 0.70% 0.70%

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 10 83 3727923 21742.53 817 797 171.4
A 7 3 12017 65.45 817 797 171.4
A 3 137 9577 51.22 817 797 171.4
B 0 183 130139 795.76 821 791 162.5
B 12 111 21091 124.89 821 791 162.5
B 11 111 19465 114.88 821 791 162.5
C 14 67 19849 99.07 825 827 192.0
C 14 254 6752 30.86 825 827 192.0
C 13 61 5535 24.52 825 827 192.0
D 2 165 425622 2090.29 821 793 203.2
D 12 2 326343 1601.81 821 793 203.2
D 2 249 207364 1016.4 821 793 203.2

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