ASTROSAT CZTI

Data Quality Report

Orbit 50568

Creation date: 2025-02-02T11:12:19.467198
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/AS1T05_239T01_9000006444_50568cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50568cztM0_level2_quad_clean.evt
Size (bytes)526,150,08082,941,120
Size501.8 MB 79.1 MB
Events in quadrant A4,534,300548,489
Events in quadrant B3,787,200616,007
Events in quadrant C6,778,354414,853
Events in quadrant D3,906,406509,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175402
B0154821
C0243711
D0160221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60494076.728385%
B60492173.587370%
C6050164727.223140%
D60501782.942149%

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 6884 6049 279 279 4.05% 4.61%
B 6884 6049 77 77 1.12% 1.27%
C 6885 6050 1470 1470 21.35% 24.30%
D 6885 6050 144 144 2.09% 2.38%

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 12 80 1127627 7225.56 632 617 156.0
A 12 250 224315 1434.19 632 617 156.0
A 4 3 180478 1153.14 632 617 156.0
B 7 0 563179 4140.96 635 613 135.9
B 5 185 253815 1863.78 635 613 135.9
B 0 229 109078 798.39 635 613 135.9
C 15 196 2169420 14696.94 534 531 147.6
C 15 195 838640 5679.24 534 531 147.6
C 0 208 561375 3800.42 534 531 147.6
D 8 246 222559 1305.68 612 591 170.0
D 2 249 217573 1276.35 612 591 170.0
D 2 165 173814 1018.95 612 591 170.0

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