ASTROSAT CZTI

Data Quality Report

Orbit 14879

Creation date: 2024-06-27T17:00:49.915228
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/AS1T02_054T01_9000002200_14879cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14879cztM0_level2_quad_clean.evt
Size (bytes)436,740,480113,958,720
Size416.5 MB 108.7 MB
Events in quadrant A3,086,280765,256
Events in quadrant B3,240,694762,843
Events in quadrant C3,192,841760,321
Events in quadrant D3,295,414740,093

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127372
B0132601
C0130421
D0135031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6062440.725833%
B6062490.808314%
C6062520.857803%
D60621101.814583%

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 7388 6064 0 0 0.00% 0.00%
B 7388 6064 7 7 0.09% 0.12%
C 7388 6064 7 7 0.09% 0.12%
D 7388 6064 52 52 0.70% 0.86%

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 12 189 30475 189.44 791 778 156.8
A 0 226 7179 40.83 791 778 156.8
A 12 194 6179 34.45 791 778 156.8
B 0 189 72255 497.74 774 756 143.6
B 3 64 57955 398.19 774 756 143.6
B 0 219 22823 153.62 774 756 143.6
C 3 233 164873 951.09 763 767 172.5
C 0 207 31544 178.37 763 767 172.5
C 14 234 8951 47.43 763 767 172.5
D 7 254 289002 1593.15 769 751 180.9
D 2 120 32075 173.13 769 751 180.9
D 2 234 24261 129.94 769 751 180.9

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