ASTROSAT CZTI

Data Quality Report

Orbit 21942

Creation date: 2024-06-27T18:34:16.853682
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_007T02_9000003244_21942cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21942cztM0_level2_quad_clean.evt
Size (bytes)488,594,880103,688,640
Size466.0 MB 98.9 MB
Events in quadrant A3,496,179688,713
Events in quadrant B3,652,504694,663
Events in quadrant C3,495,517664,050
Events in quadrant D3,721,999649,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145691
B0149221
C0144541
D0153181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6355821.290323%
B63541412.219075%
C63551292.029898%
D63551151.809599%

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 7625 6355 0 0 0.00% 0.00%
B 7624 6354 28 28 0.37% 0.44%
C 7625 6355 0 0 0.00% 0.00%
D 7625 6355 45 45 0.59% 0.71%

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 4 2 10704 55.26 904 889 177.6
A 13 254 9018 45.77 904 889 177.6
A 0 226 7949 39.75 904 889 177.6
B 3 64 116173 704.44 882 862 163.7
B 0 230 44215 264.85 882 862 163.7
B 0 229 24990 147.4 882 862 163.7
C 14 238 137157 688.56 861 868 197.9
C 13 61 5776 24.8 861 868 197.9
C 3 202 2066 6.05 861 868 197.9
D 1 52 151706 723.55 877 855 208.5
D 11 176 86605 411.29 877 855 208.5
D 12 235 74871 355.01 877 855 208.5

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