ASTROSAT CZTI

Data Quality Report

Orbit 06275

Creation date: 2024-06-27T15:05:00.288297
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/AS1C02_018T01_9000000822_06275cztM0_level2.evt modeM0/AS1C02_018T01_9000000822_06275cztM0_level2_quad_clean.evt
Size (bytes)285,825,60033,690,240
Size272.6 MB 32.1 MB
Events in quadrant A2,269,173183,259
Events in quadrant B1,978,399190,973
Events in quadrant C1,668,300195,512
Events in quadrant D2,478,652179,113

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090993
B085933
C078733
D0100163

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38251183.084967%
B3825842.196078%
C3825210.549020%
D38252366.169935%

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 4110 3828 0 0 0.00% 0.00%
B 4110 3828 32 32 0.78% 0.84%
C 4110 3828 0 0 0.00% 0.00%
D 4110 3828 169 169 4.11% 4.41%

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 8 15 356800 4026.04 423 414 88.5
A 15 236 259885 2931.21 423 414 88.5
A 13 251 17036 187.78 423 414 88.5
B 3 64 132704 1534.64 436 425 86.2
B 0 219 93027 1074.32 436 425 86.2
B 4 81 21395 243.28 436 425 86.2
C 8 128 5695 52.27 423 425 100.8
C 13 61 3354 29.05 423 425 100.8
C 8 112 2857 24.12 423 425 100.8
D 2 14 358594 3503.86 406 393 102.2
D 12 220 323122 3156.88 406 393 102.2
D 5 97 58081 564.29 406 393 102.2

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