ASTROSAT CZTI

Data Quality Report

Orbit 19834

Creation date: 2024-06-27T18:07:41.633714
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/AS1T03_118T01_9000002962_19834cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19834cztM0_level2_quad_clean.evt
Size (bytes)563,152,320100,601,280
Size537.1 MB 95.9 MB
Events in quadrant A5,337,125617,734
Events in quadrant B3,570,822662,608
Events in quadrant C3,499,728635,378
Events in quadrant D4,147,937618,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208711
B0153421
C0151421
D0172741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A735480410.932826%
B73541291.754147%
C73541191.618167%
D73551562.121006%

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 7639 7354 578 578 7.57% 7.86%
B 7639 7355 15 15 0.20% 0.20%
C 7639 7355 1 1 0.01% 0.01%
D 7640 7356 73 73 0.96% 0.99%

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 14 238 1976127 11545.39 840 822 171.1
A 5 16 85356 494.09 840 822 171.1
A 14 254 43944 252.04 840 822 171.1
B 7 220 55190 316.18 880 853 171.9
B 10 245 28896 163.18 880 853 171.9
B 12 111 20889 116.59 880 853 171.9
C 14 238 130504 644.87 853 860 201.0
C 9 221 36057 175.08 853 860 201.0
C 13 61 5941 25.27 853 860 201.0
D 7 238 419102 1985.96 863 836 210.6
D 1 52 400288 1896.63 863 836 210.6
D 1 20 60156 281.66 863 836 210.6

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