ASTROSAT CZTI

Data Quality Report

Orbit 18880

Creation date: 2024-06-27T17:56:03.586197
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/AS1A06_003T07_9000002818_18880cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18880cztM0_level2_quad_clean.evt
Size (bytes)567,904,32097,657,920
Size541.6 MB 93.1 MB
Events in quadrant A5,187,057608,692
Events in quadrant B3,729,846644,609
Events in quadrant C3,294,540621,596
Events in quadrant D4,519,367601,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200921
B0156731
C0143461
D0182531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69056569.500362%
B69061171.694179%
C6906951.375615%
D69063174.590211%

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 7220 6906 575 575 7.96% 8.33%
B 7221 6907 28 28 0.39% 0.41%
C 7221 6907 8 8 0.11% 0.12%
D 7221 6907 175 175 2.42% 2.53%

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 6 16 2099770 12930.9 793 775 162.3
A 12 96 11344 65.11 793 775 162.3
A 13 254 9652 54.69 793 775 162.3
B 0 189 242698 1540.33 814 791 157.0
B 7 220 212414 1347.5 814 791 157.0
B 4 171 24301 149.7 814 791 157.0
C 14 238 121318 647.77 788 792 186.1
C 12 4 57757 306.16 788 792 186.1
C 5 4 14693 74.71 788 792 186.1
D 12 218 874408 4544.83 787 763 192.2
D 1 52 284331 1475.16 787 763 192.2
D 7 238 238069 1234.5 787 763 192.2

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