ASTROSAT CZTI

Data Quality Report

Orbit 27146

Creation date: 2024-06-27T19:37:19.712436
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_247T01_9000003914_27146cztM0_level2.evt modeM0/AS1T03_247T01_9000003914_27146cztM0_level2_quad_clean.evt
Size (bytes)500,273,280137,208,960
Size477.1 MB 130.9 MB
Events in quadrant A3,518,360914,815
Events in quadrant B3,586,240933,815
Events in quadrant C3,560,533906,019
Events in quadrant D3,985,745888,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152630
B0154410
C0155280
D0171940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7358610.829030%
B7358941.277521%
C73581041.413428%
D73581071.454200%

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 7683 7359 17 17 0.22% 0.23%
B 7683 7359 28 28 0.36% 0.38%
C 7683 7359 37 37 0.48% 0.50%
D 7683 7359 64 64 0.83% 0.87%

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 14 235 148017 858.62 853 833 171.4
A 13 34 59742 343.66 853 833 171.4
A 13 254 12188 66.24 853 833 171.4
B 5 172 74945 456.89 856 832 162.2
B 3 112 64307 391.31 856 832 162.2
B 3 64 45517 275.47 856 832 162.2
C 15 208 147723 756.9 829 835 194.1
C 14 238 133190 682.01 829 835 194.1
C 2 16 45943 232.44 829 835 194.1
D 1 52 349742 1671.04 826 804 208.8
D 7 38 200927 958.38 826 804 208.8
D 2 250 155954 743.0 826 804 208.8

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