ASTROSAT CZTI

Data Quality Report

Orbit 15302

Creation date: 2024-06-27T17:06:28.301216
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/AS1A04_223T01_9000002258_15302cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15302cztM0_level2_quad_clean.evt
Size (bytes)477,492,48094,121,280
Size455.4 MB 89.8 MB
Events in quadrant A3,283,670600,890
Events in quadrant B3,554,513611,303
Events in quadrant C3,693,510595,023
Events in quadrant D3,466,634568,484

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143303
B0149832
C0151832
D0149532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6813450.660502%
B68131031.511816%
C6813340.499046%
D6813791.159548%

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 8809 6816 4 4 0.05% 0.06%
B 8809 6816 36 36 0.41% 0.53%
C 8809 6816 6 6 0.07% 0.09%
D 8809 6816 47 47 0.53% 0.69%

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 15 69 70535 413.9 828 810 168.5
A 9 143 23904 137.09 828 810 168.5
A 0 226 7454 39.44 828 810 168.5
B 10 16 189746 1170.37 828 806 161.4
B 0 189 36648 222.02 828 806 161.4
B 3 209 34061 206.0 828 806 161.4
C 3 233 551243 2946.4 800 804 186.8
C 7 247 20177 103.7 800 804 186.8
C 13 61 5682 26.11 800 804 186.8
D 2 33 201511 1028.24 795 771 195.2
D 8 195 125961 641.26 795 771 195.2
D 10 70 52055 262.69 795 771 195.2

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