ASTROSAT CZTI

Data Quality Report

Orbit 12375

Creation date: 2024-06-27T16:26:19.744827
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/AS1G08_072T03_9000001836_12375cztM0_level2.evt modeM0/AS1G08_072T03_9000001836_12375cztM0_level2_quad_clean.evt
Size (bytes)755,893,44063,509,760
Size720.9 MB 60.6 MB
Events in quadrant A3,730,985408,899
Events in quadrant B12,145,216277,593
Events in quadrant C3,377,757420,477
Events in quadrant D3,232,141395,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151322
B0400951
C0135521
D0132041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6003661.099450%
B6003432972.113943%
C60031562.598701%
D6003781.299350%

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 7324 6004 5 5 0.07% 0.08%
B 7323 6003 4125 4125 56.33% 68.72%
C 7324 6004 129 129 1.76% 2.15%
D 7323 6003 47 47 0.64% 0.78%

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 1 162 238013 1542.3 770 757 153.8
A 1 178 130920 846.13 770 757 153.8
A 1 161 112227 724.62 770 757 153.8
B 2 32 6090507 65806.43 494 485 92.5
B 2 48 3809905 41163.12 494 485 92.5
B 4 239 263571 2842.81 494 485 92.5
C 15 208 333677 1906.72 761 769 174.6
C 12 4 75330 427.05 761 769 174.6
C 13 61 5609 27.72 761 769 174.6
D 1 52 274820 1548.23 752 734 177.0
D 10 199 107332 602.14 752 734 177.0
D 2 234 19799 107.69 752 734 177.0

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