ASTROSAT CZTI

Data Quality Report

Orbit 47775

Creation date: 2024-07-29T07:09:46.151908
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/AS1C09_004T02_9000006348_47775cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47775cztM0_level2_quad_clean.evt
Size (bytes)496,140,480110,070,720
Size473.2 MB 105.0 MB
Events in quadrant A7,180,539718,403
Events in quadrant B3,214,713748,570
Events in quadrant C3,106,447721,022
Events in quadrant D4,321,728658,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257862
B0146322
C0145022
D0180612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69882793.992559%
B6988570.815684%
C6988440.629651%
D69882233.191185%

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 7928 6989 104 104 1.31% 1.49%
B 7928 6989 15 15 0.19% 0.21%
C 7928 6989 24 24 0.30% 0.34%
D 7928 6989 183 183 2.31% 2.62%

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 10 83 4245188 27363.16 745 726 155.1
A 13 6 24271 151.79 745 726 155.1
A 14 248 9422 56.06 745 726 155.1
B 5 32 89701 599.62 753 728 148.4
B 0 200 59559 396.49 753 728 148.4
B 5 255 23583 154.03 753 728 148.4
C 12 2 127011 724.49 744 749 174.3
C 14 254 32814 183.99 744 749 174.3
C 2 80 26068 145.28 744 749 174.3
D 12 2 558022 3034.0 735 710 183.7
D 2 165 238614 1295.15 735 710 183.7
D 7 67 172703 936.33 735 710 183.7

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