ASTROSAT CZTI

Data Quality Report

Orbit 23755

Creation date: 2024-06-27T18:58:20.694057
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/AS1C05_007T01_9000003518_23755cztM0_level2.evt modeM0/AS1C05_007T01_9000003518_23755cztM0_level2_quad_clean.evt
Size (bytes)590,011,200101,600,640
Size562.7 MB 96.9 MB
Events in quadrant A3,307,087653,760
Events in quadrant B4,325,039673,658
Events in quadrant C3,582,434652,557
Events in quadrant D6,185,249614,745

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143632
B0173242
C0147702
D0232892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6926510.736356%
B69253074.433213%
C69251161.675090%
D69252213.191336%

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 7931 6926 0 0 0.00% 0.00%
B 7930 6925 107 107 1.35% 1.55%
C 7930 6925 8 8 0.10% 0.12%
D 7930 6926 260 260 3.28% 3.75%

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 13 254 11270 60.12 858 840 173.5
A 3 137 7429 37.98 858 840 173.5
A 0 226 7361 37.59 858 840 173.5
B 3 64 895764 5567.78 853 832 160.7
B 0 189 52441 321.08 853 832 160.7
B 12 111 19691 117.33 853 832 160.7
C 14 238 129575 655.27 836 844 196.5
C 0 10 78061 393.05 836 844 196.5
C 10 91 72742 365.98 836 844 196.5
D 1 52 2551211 12629.75 831 807 201.9
D 8 195 493957 2442.11 831 807 201.9
D 2 234 26797 128.7 831 807 201.9

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