ASTROSAT CZTI

Data Quality Report

Orbit 23023

Creation date: 2024-06-27T18:48:54.823089
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_004T01_9000003404_23023cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23023cztM0_level2_quad_clean.evt
Size (bytes)1,281,237,120266,086,080
Size1.2 GB 253.8 MB
Events in quadrant A8,139,3771,752,787
Events in quadrant B8,912,5761,761,218
Events in quadrant C8,355,4911,684,952
Events in quadrant D12,182,3901,623,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364883
B0382963
C0366933
D0479773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179261570.875823%
B179273662.041613%
C179272251.255090%
D179275413.017794%

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 19851 17929 4 4 0.02% 0.02%
B 19852 17930 147 147 0.74% 0.82%
C 19852 17930 2 2 0.01% 0.01%
D 19852 17930 365 365 1.84% 2.04%

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 25661 55.87 2106 2058 422.5
A 15 174 19534 41.37 2106 2058 422.5
A 3 137 19059 40.24 2106 2058 422.5
B 4 216 570258 1428.03 2087 2030 397.9
B 0 190 70625 172.39 2087 2030 397.9
B 0 189 69488 169.53 2087 2030 397.9
C 14 238 320723 676.3 2023 2033 471.2
C 10 9 33945 67.72 2023 2033 471.2
C 0 10 31544 62.63 2023 2033 471.2
D 1 52 2529832 5079.54 2043 1981 497.7
D 13 174 643747 1289.58 2043 1981 497.7
D 13 153 393956 787.65 2043 1981 497.7

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