ASTROSAT CZTI

Data Quality Report

Orbit 30813

Creation date: 2024-06-27T20:19:55.623068
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/AS1C06_003T01_9000004452_30813cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30813cztM0_level2_quad_clean.evt
Size (bytes)662,120,640105,511,680
Size631.4 MB 100.6 MB
Events in quadrant A3,228,691730,185
Events in quadrant B5,382,050724,008
Events in quadrant C4,163,438698,530
Events in quadrant D6,845,599595,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138752
B0207882
C0165172
D0248802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6403661.030767%
B64032824.404186%
C64032794.357333%
D6403107616.804623%

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 7513 6404 43 43 0.57% 0.67%
B 7513 6403 154 154 2.05% 2.41%
C 7513 6404 108 108 1.44% 1.69%
D 7513 6404 850 850 11.31% 13.27%

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 13 253075 1645.81 768 753 153.3
A 13 254 12591 77.22 768 753 153.3
A 12 96 9748 58.67 768 753 153.3
B 6 159 1869627 13087.15 759 740 142.8
B 5 172 464221 3245.59 759 740 142.8
B 4 80 28352 193.36 759 740 142.8
C 3 233 909895 5278.34 738 745 172.2
C 0 10 193919 1121.53 738 745 172.2
C 14 238 117929 680.35 738 745 172.2
D 8 195 2568318 16128.53 664 648 159.2
D 12 218 1318924 8280.6 664 648 159.2
D 2 250 172593 1080.05 664 648 159.2

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