ASTROSAT CZTI

Data Quality Report

Orbit 08773

Creation date: 2024-06-27T15:37:01.175704
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/AS1G07_010T01_9000001220_08773cztM0_level2.evt modeM0/AS1G07_010T01_9000001220_08773cztM0_level2_quad_clean.evt
Size (bytes)464,126,40090,365,760
Size442.6 MB 86.2 MB
Events in quadrant A3,241,242573,483
Events in quadrant B3,280,339578,548
Events in quadrant C3,089,612574,168
Events in quadrant D3,996,343549,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141173
B0141812
C0137032
D0163972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6602560.848228%
B6602851.287489%
C6602390.590730%
D66021321.999394%

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 7657 6602 1 1 0.01% 0.02%
B 7657 6602 21 21 0.27% 0.32%
C 7657 6602 0 0 0.00% 0.00%
D 7657 6602 86 86 1.12% 1.30%

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 5 124465 754.24 802 785 164.0
A 5 16 14927 86.24 802 785 164.0
A 13 251 9875 55.43 802 785 164.0
B 10 16 122221 786.57 804 785 154.4
B 4 173 27328 171.93 804 785 154.4
B 12 111 17054 105.38 804 785 154.4
C 13 61 5822 27.26 789 794 184.4
C 14 234 4874 22.12 789 794 184.4
C 9 54 4684 21.09 789 794 184.4
D 2 16 553634 2821.68 779 762 195.9
D 2 152 248708 1265.44 779 762 195.9
D 7 71 130322 661.23 779 762 195.9

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