ASTROSAT CZTI

Data Quality Report

Orbit 14335

Creation date: 2024-06-27T16:53:41.473101
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/AS1G08_078T01_9000002110_14335cztM0_level2.evt modeM0/AS1G08_078T01_9000002110_14335cztM0_level2_quad_clean.evt
Size (bytes)534,968,64081,112,320
Size510.2 MB 77.4 MB
Events in quadrant A3,612,777498,535
Events in quadrant B3,815,405494,165
Events in quadrant C3,679,130484,951
Events in quadrant D4,602,387473,737

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152842
B0159011
C0149981
D0185581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72461031.421474%
B72461832.525531%
C7246781.076456%
D72461592.194314%

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 7607 7247 6 6 0.08% 0.08%
B 7607 7247 72 72 0.95% 0.99%
C 7607 7247 0 0 0.00% 0.00%
D 7607 7247 59 59 0.78% 0.81%

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 101512 563.69 874 853 178.6
A 11 29 84781 469.99 874 853 178.6
A 12 189 66989 370.36 874 853 178.6
B 10 16 193334 1141.44 862 839 168.6
B 10 245 144378 851.14 862 839 168.6
B 0 189 44188 257.05 862 839 168.6
C 3 233 391686 1971.26 843 845 198.3
C 13 61 5988 25.94 843 845 198.3
C 3 202 2054 6.1 843 845 198.3
D 12 110 473480 2360.97 839 819 200.2
D 5 222 385209 1920.05 839 819 200.2
D 10 199 149130 740.82 839 819 200.2

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