ASTROSAT CZTI

Data Quality Report

Orbit 03956

Creation date: 2024-06-27T14:35:39.489188
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/AS1G05_246T02_9000000504_03956cztM0_level2.evt modeM0/AS1G05_246T02_9000000504_03956cztM0_level2_quad_clean.evt
Size (bytes)566,697,60075,205,440
Size540.4 MB 71.7 MB
Events in quadrant A5,161,128432,397
Events in quadrant B3,938,542436,932
Events in quadrant C3,695,598432,773
Events in quadrant D3,826,338421,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204462
B0168871
C0167093
D0173381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12247644991680
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79654325.423729%
B79653204.017577%
C79642302.887996%
D79652563.214062%

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 7965 7965 42 42 0.53% 0.53%
B 7965 7965 9 9 0.11% 0.11%
C 7965 7965 7 7 0.09% 0.09%
D 7965 7965 17 17 0.21% 0.21%

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 8 15 746352 3823.27 939 914 195.0
A 0 118 400719 2050.55 939 914 195.0
A 0 199 185242 945.4 939 914 195.0
B 4 81 102885 548.56 956 930 185.9
B 15 204 95807 510.48 956 930 185.9
B 3 0 21814 112.36 956 930 185.9
C 1 16 75986 344.88 924 924 217.6
C 13 61 7924 32.16 924 924 217.6
C 2 37 3513 11.9 924 924 217.6
D 2 63 156474 691.68 919 889 224.9
D 13 239 88373 388.92 919 889 224.9
D 2 232 28186 121.35 919 889 224.9

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