ASTROSAT CZTI

Data Quality Report

Orbit 08873

Creation date: 2024-06-27T15:38:29.154860
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/AS1G07_046T01_9000001236_08873cztM0_level2.evt modeM0/AS1G07_046T01_9000001236_08873cztM0_level2_quad_clean.evt
Size (bytes)480,159,36069,992,640
Size457.9 MB 66.8 MB
Events in quadrant A3,726,692423,972
Events in quadrant B3,361,735426,404
Events in quadrant C3,208,244421,796
Events in quadrant D3,818,761408,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01526016
B0137779
C01326113
D01534312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62731372.183963%
B62761372.182919%
C6274901.434492%
D62752083.314741%

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 7560 6279 11 11 0.15% 0.18%
B 7560 6279 7 7 0.09% 0.11%
C 7560 6279 0 0 0.00% 0.00%
D 7560 6278 106 106 1.40% 1.69%

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 5 455603 2631.02 845 827 172.9
A 0 226 8101 42.08 845 827 172.9
A 5 16 7585 39.1 845 827 172.9
B 0 213 66902 409.08 844 826 161.5
B 12 111 16635 97.87 844 826 161.5
B 0 214 14834 86.72 844 826 161.5
C 10 22 6325 28.99 820 827 189.6
C 13 61 6021 27.39 820 827 189.6
C 1 3 4825 21.08 820 827 189.6
D 8 195 267549 1317.87 815 796 202.4
D 7 71 241890 1191.11 815 796 202.4
D 1 52 135556 665.77 815 796 202.4

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