ASTROSAT CZTI

Data Quality Report

Orbit 44158

Creation date: 2024-06-27T22:59:54.619000
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/AS1A13_080T06_9000005954_44158cztM0_level2.fits modeM0/AS1A13_080T06_9000005954_44158cztM0_level2_quad_clean.evt
Size (bytes)655,208,640111,104,640
Size624.9 MB 106.0 MB
Events in quadrant A6,821,326749,425
Events in quadrant B6,488,278736,980
Events in quadrant C4,070,600720,929
Events in quadrant D6,306,863647,104

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253642
B0243952
C0176942
D0238772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73184896.682154%
B731889612.243782%
C73184536.190216%
D73186458.813884%

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 7913 7319 199 199 2.51% 2.72%
B 7913 7319 480 480 6.07% 6.56%
C 7913 7319 343 343 4.33% 4.69%
D 7913 7319 494 494 6.24% 6.75%

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 15 223 1686018 10395.05 777 760 162.1
A 10 83 1668206 10285.18 777 760 162.1
A 14 238 197725 1214.92 777 760 162.1
B 5 172 1154953 7808.15 765 743 147.8
B 0 219 1011312 6836.43 765 743 147.8
B 5 235 416517 2812.68 765 743 147.8
C 15 158 932071 5410.59 742 744 172.1
C 14 254 201852 1168.35 742 744 172.1
C 3 233 22762 127.91 742 744 172.1
D 13 187 999056 5327.92 744 718 187.4
D 8 48 512706 2732.37 744 718 187.4
D 1 47 401318 2137.92 744 718 187.4

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