ASTROSAT CZTI

Data Quality Report

Orbit 09076

Creation date: 2024-06-27T15:41:16.030215
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_057T04_9000001264_09076cztM0_level2.evt modeM0/AS1G07_057T04_9000001264_09076cztM0_level2_quad_clean.evt
Size (bytes)463,158,72066,519,360
Size441.7 MB 63.4 MB
Events in quadrant A3,569,622398,131
Events in quadrant B3,251,521402,333
Events in quadrant C3,169,119391,341
Events in quadrant D3,606,350380,059

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143995
B0133942
C0133924
D0147524

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337811.278207%
B6338911.435784%
C6337851.341329%
D63371161.830519%

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 7613 6339 3 3 0.04% 0.05%
B 7613 6339 2 2 0.03% 0.03%
C 7613 6339 19 19 0.25% 0.30%
D 7613 6338 34 34 0.45% 0.54%

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 339848 2058.1 813 798 164.7
A 1 162 39012 231.97 813 798 164.7
A 15 239 37578 223.26 813 798 164.7
B 0 229 29048 183.79 817 798 153.7
B 0 214 25451 160.39 817 798 153.7
B 12 111 16629 102.99 817 798 153.7
C 14 234 80794 436.75 791 799 183.2
C 13 61 6061 28.73 791 799 183.2
C 14 67 2351 8.47 791 799 183.2
D 6 225 192692 962.66 786 767 199.4
D 12 233 138308 689.88 786 767 199.4
D 1 52 121023 603.18 786 767 199.4

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