ASTROSAT CZTI

Data Quality Report

Orbit 08679

Creation date: 2024-06-27T15:35:48.491426
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_024T01_9000001206_08679cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08679cztM0_level2_quad_clean.evt
Size (bytes)412,300,800110,880,000
Size393.2 MB 105.7 MB
Events in quadrant A2,777,053739,312
Events in quadrant B3,310,862748,989
Events in quadrant C2,741,330735,493
Events in quadrant D3,238,120704,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127112
B0138931
C0126023
D0140963

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6165490.794809%
B6165891.443633%
C6164380.616483%
D61641522.465931%

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 7125 6165 3 3 0.04% 0.05%
B 7125 6165 46 46 0.65% 0.75%
C 7125 6165 9 9 0.13% 0.15%
D 7125 6165 94 94 1.32% 1.52%

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 53456 364.47 704 687 144.8
A 0 226 6627 41.03 704 687 144.8
A 12 194 6234 38.31 704 687 144.8
B 10 16 291420 2154.17 707 689 135.0
B 0 219 85902 631.39 707 689 135.0
B 10 246 84208 618.83 707 689 135.0
C 1 16 62274 390.67 684 684 157.7
C 13 61 5274 29.11 684 684 157.7
C 8 222 5174 28.48 684 684 157.7
D 12 233 350699 2096.5 682 660 167.0
D 2 152 136676 814.64 682 660 167.0
D 10 253 81881 486.46 682 660 167.0

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