ASTROSAT CZTI

Data Quality Report

Orbit 47574

Creation date: 2024-07-15T17:06:59.261981
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/AS1C09_002T01_9000006334_47574cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47574cztM0_level2_quad_clean.evt
Size (bytes)2,039,304,960235,612,800
Size1.9 GB 224.7 MB
Events in quadrant A20,041,1611,762,826
Events in quadrant B8,196,3041,868,383
Events in quadrant C7,380,1681,826,627
Events in quadrant D38,547,967492,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0721633
B0361323
C0348813
D01262973

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1715112257.142441%
B171521991.160215%
C171521020.594683%
D171521250772.918610%

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 19930 17150 596 596 2.99% 3.48%
B 19932 17154 57 57 0.29% 0.33%
C 19932 17154 8 8 0.04% 0.05%
D 19932 17152 12692 12692 63.68% 74.00%

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 10 83 9533649 24683.38 1867 1823 386.2
A 9 191 3112239 8054.66 1867 1823 386.2
A 13 248 156876 401.52 1867 1823 386.2
B 0 200 486571 1317.4 1888 1830 368.0
B 5 32 66553 175.9 1888 1830 368.0
B 0 198 54402 142.88 1888 1830 368.0
C 12 250 39591 85.63 1877 1882 440.4
C 6 247 14531 28.72 1877 1882 440.4
C 3 233 12528 24.17 1877 1882 440.4
D 2 165 27687204 99178.04 1099 1060 279.2
D 6 112 4181338 14974.7 1099 1060 279.2
D 2 249 861971 3083.98 1099 1060 279.2

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