ASTROSAT CZTI

Data Quality Report

Orbit 03028

Creation date: 2024-06-27T14:23:39.838871
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/AS1G05_237T02_9000000422_03028cztM0_level2.evt modeM0/AS1G05_237T02_9000000422_03028cztM0_level2_quad_clean.evt
Size (bytes)340,185,60075,962,880
Size324.4 MB 72.4 MB
Events in quadrant A2,319,693490,298
Events in quadrant B2,318,961491,894
Events in quadrant C2,268,190494,417
Events in quadrant D3,059,249477,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104953
B0103932
C0103122
D0128862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4931310.628676%
B4931190.385317%
C493170.141959%
D49321472.980535%

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 7085 4931 20 20 0.28% 0.41%
B 7085 4930 14 14 0.20% 0.28%
C 7085 4931 5 5 0.07% 0.10%
D 7086 4932 141 141 1.99% 2.86%

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 14 249 180274 1680.32 519 506 107.0
A 12 247 51601 477.59 519 506 107.0
A 8 15 25149 230.34 519 506 107.0
B 14 167 85070 831.99 528 516 101.6
B 0 219 83159 813.19 528 516 101.6
B 15 85 41376 402.05 528 516 101.6
C 1 192 115292 964.27 511 514 119.0
C 6 80 82975 692.77 511 514 119.0
C 15 208 21736 178.29 511 514 119.0
D 13 114 965282 8157.2 501 489 118.3
D 2 152 118092 994.32 501 489 118.3
D 13 239 17348 142.54 501 489 118.3

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