ASTROSAT CZTI

Data Quality Report

Orbit 30009

Creation date: 2024-06-27T20:09:50.547072
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/AS1A10_071T02_9000004312_30009cztM0_level2.evt modeM0/AS1A10_071T02_9000004312_30009cztM0_level2_quad_clean.evt
Size (bytes)841,034,88089,377,920
Size802.1 MB 85.2 MB
Events in quadrant A3,607,323627,443
Events in quadrant B11,551,482432,089
Events in quadrant C3,820,566593,838
Events in quadrant D6,028,807574,796

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146702
B0389802
C0155002
D0222282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68451181.723886%
B6845348650.927684%
C68451722.512783%
D684575411.015340%

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 7800 6847 0 0 0.00% 0.00%
B 7800 6847 2711 2711 34.76% 39.59%
C 7800 6847 3 3 0.04% 0.04%
D 7800 6847 526 526 6.74% 7.68%

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 3 1 40692 217.96 912 893 182.6
A 8 192 28670 152.12 912 893 182.6
A 5 203 19874 103.95 912 893 182.6
B 6 36 7311876 54061.29 700 683 135.2
B 6 159 1482237 10955.08 700 683 135.2
B 12 111 16197 114.72 700 683 135.2
C 3 233 299340 1483.33 862 869 201.2
C 14 238 143439 708.54 862 869 201.2
C 2 114 16042 75.41 862 869 201.2
D 7 80 2408967 11969.99 846 828 201.2
D 8 195 373806 1853.94 846 828 201.2
D 2 234 27064 130.41 846 828 201.2

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