ASTROSAT CZTI

Data Quality Report

Orbit 08079

Creation date: 2024-06-27T15:27:40.140963
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/AS1A02_055T01_9000001114_08079cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08079cztM0_level2_quad_clean.evt
Size (bytes)679,613,76098,496,000
Size648.1 MB 93.9 MB
Events in quadrant A3,770,012618,330
Events in quadrant B3,712,832643,307
Events in quadrant C8,579,009585,643
Events in quadrant D4,013,312613,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161973
B0161002
C0303912
D0172972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7489971.295233%
B74891321.762585%
C7489138018.427026%
D74891652.203231%

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 9404 7491 1 1 0.01% 0.01%
B 9404 7491 4 4 0.04% 0.05%
C 9404 7491 1391 1391 14.79% 18.57%
D 9404 7491 35 35 0.37% 0.47%

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 0 128 271480 1456.04 905 885 185.8
A 0 226 8503 40.99 905 885 185.8
A 12 194 8116 38.91 905 885 185.8
B 4 81 36935 203.07 921 898 177.5
B 11 51 28330 154.58 921 898 177.5
B 0 214 27086 147.57 921 898 177.5
C 9 68 5101428 25656.44 868 870 198.8
C 1 16 88284 439.7 868 870 198.8
C 13 61 6444 28.04 868 870 198.8
D 1 52 383931 1641.59 879 858 233.4
D 7 71 120111 511.04 879 858 233.4
D 12 233 67552 285.8 879 858 233.4

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