ASTROSAT CZTI

Data Quality Report

Orbit 37565

Creation date: 2024-06-27T21:41:35.696289
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/AS1C07_001T11_9000005336_37565cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37565cztM0_level2_quad_clean.evt
Size (bytes)371,062,08093,994,560
Size353.9 MB 89.6 MB
Events in quadrant A2,473,882622,238
Events in quadrant B2,711,185642,552
Events in quadrant C2,552,936641,959
Events in quadrant D3,171,621601,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104553
B0111932
C0104792
D0127532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4821190.394109%
B4821661.369011%
C4821470.974901%
D48211733.588467%

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 6973 4822 13 13 0.19% 0.27%
B 6973 4822 47 47 0.67% 0.97%
C 6973 4822 39 39 0.56% 0.81%
D 6973 4822 160 160 2.29% 3.32%

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 292062 2680.99 541 530 108.7
A 9 143 33608 304.19 541 530 108.7
A 13 248 21016 188.39 541 530 108.7
B 5 255 154574 1511.84 545 532 101.9
B 5 172 139319 1362.12 545 532 101.9
B 0 213 66750 649.89 545 532 101.9
C 15 214 221580 1781.93 537 540 124.0
C 0 10 158472 1273.18 537 540 124.0
C 14 254 69424 555.31 537 540 124.0
D 2 250 287899 2222.87 523 509 129.3
D 10 199 226151 1745.27 523 509 129.3
D 2 249 217186 1675.92 523 509 129.3

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