ASTROSAT CZTI

Data Quality Report

Orbit 04761

Creation date: 2024-06-27T14:46:36.590952
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/AS1G05_212T01_9000000600_04761cztM0_level2.evt modeM0/AS1G05_212T01_9000000600_04761cztM0_level2_quad_clean.evt
Size (bytes)415,163,52054,904,320
Size395.9 MB 52.4 MB
Events in quadrant A2,256,932338,545
Events in quadrant B2,860,457335,899
Events in quadrant C3,266,300324,575
Events in quadrant D3,850,742313,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102782
B0118441
C0131651
D0148661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4989210.420926%
B49891222.445380%
C4989621.242734%
D4989971.944277%

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 6309 4990 1 1 0.02% 0.02%
B 6309 4990 49 49 0.78% 0.98%
C 6309 4990 26 26 0.41% 0.52%
D 6309 4990 83 83 1.32% 1.66%

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 0 118 13292 108.55 578 565 117.2
A 0 50 9487 76.1 578 565 117.2
A 0 226 6950 54.46 578 565 117.2
B 14 167 453716 4103.26 585 573 110.4
B 4 80 100035 900.64 585 573 110.4
B 15 204 45600 407.72 585 573 110.4
C 14 48 996583 7821.69 556 558 127.3
C 1 16 89197 696.07 556 558 127.3
C 12 4 9424 69.62 556 558 127.3
D 11 132 1210568 9041.21 553 534 133.8
D 13 235 344708 2571.62 553 534 133.8
D 10 15 106297 790.25 553 534 133.8

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