ASTROSAT CZTI

Data Quality Report

Orbit 16716

Creation date: 2024-06-27T17:26:37.716475
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/AS1T03_024T01_9000002472_16716cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16716cztM0_level2_quad_clean.evt
Size (bytes)725,708,16066,870,720
Size692.1 MB 63.8 MB
Events in quadrant A3,554,121424,832
Events in quadrant B3,802,790425,709
Events in quadrant C4,428,039408,089
Events in quadrant D9,763,461322,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145823
B0153742
C0175572
D0334702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353711.117582%
B6353921.448135%
C63531322.077759%
D6353295446.497718%

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 7669 6355 13 13 0.17% 0.20%
B 7669 6355 27 27 0.35% 0.42%
C 7669 6355 15 15 0.20% 0.24%
D 7668 6354 1844 1844 24.05% 29.02%

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 15 174 94151 526.37 888 876 177.2
A 0 23 34853 191.74 888 876 177.2
A 0 226 9954 51.23 888 876 177.2
B 5 236 126956 768.57 880 862 164.1
B 15 35 122341 740.44 880 862 164.1
B 0 229 31001 183.7 880 862 164.1
C 3 233 783783 3999.96 851 861 195.7
C 14 238 133899 679.69 851 861 195.7
C 0 207 131015 664.96 851 861 195.7
D 1 52 6575425 39919.43 671 654 164.7
D 11 176 359388 2178.09 671 654 164.7
D 2 16 115053 694.59 671 654 164.7

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