ASTROSAT CZTI

Data Quality Report

Orbit 13479

Creation date: 2024-06-27T16:41:25.650264
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/AS1A04_103T01_9000001988_13479cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13479cztM0_level2_quad_clean.evt
Size (bytes)494,043,840105,935,040
Size471.2 MB 101.0 MB
Events in quadrant A3,582,134674,779
Events in quadrant B3,755,856687,179
Events in quadrant C3,551,547672,029
Events in quadrant D3,553,038642,454

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158893
B0162212
C0158042
D0163122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7650630.823529%
B76501151.503268%
C7650350.457516%
D7650440.575163%

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 8061 7652 0 0 0.00% 0.00%
B 8061 7651 6 6 0.07% 0.08%
C 8061 7653 5 5 0.06% 0.07%
D 8061 7653 16 16 0.20% 0.21%

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 24650 126.95 915 893 187.1
A 11 29 15773 79.51 915 893 187.1
A 1 162 15467 77.88 915 893 187.1
B 3 64 66344 371.28 920 897 176.3
B 4 142 32737 180.63 920 897 176.3
B 0 230 32041 176.68 920 897 176.3
C 3 233 56765 269.08 889 894 207.6
C 2 1 19440 89.32 889 894 207.6
C 0 207 11535 51.25 889 894 207.6
D 12 110 178898 843.87 875 850 211.0
D 2 234 26224 120.26 875 850 211.0
D 13 249 14918 66.67 875 850 211.0

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