ASTROSAT CZTI

Data Quality Report

Orbit 38450

Creation date: 2024-06-27T21:52:55.304742
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/AS1A12_018T01_9000005386_38450cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38450cztM0_level2_quad_clean.evt
Size (bytes)307,051,20087,431,040
Size292.8 MB 83.4 MB
Events in quadrant A2,675,719594,622
Events in quadrant B2,574,559598,278
Events in quadrant C2,440,442574,870
Events in quadrant D3,280,320524,728

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110633
B0109582
C0103412
D0131922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5068130.256511%
B5068310.611681%
C5068150.295975%
D50681172.308603%

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 7012 5069 5 5 0.07% 0.10%
B 7012 5069 9 9 0.13% 0.18%
C 7012 5069 9 9 0.13% 0.18%
D 7012 5069 93 93 1.33% 1.83%

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 10 83 394557 3443.33 567 556 114.4
A 6 10 30497 261.67 567 556 114.4
A 15 223 25039 213.97 567 556 114.4
B 0 183 96776 894.63 564 548 107.6
B 5 184 85069 785.79 564 548 107.6
B 0 189 67747 624.75 564 548 107.6
C 15 214 214068 1668.39 556 559 128.0
C 0 10 38130 293.59 556 559 128.0
C 1 23 11070 82.13 556 559 128.0
D 2 16 282968 2095.1 554 540 134.8
D 2 249 281634 2085.2 554 540 134.8
D 12 235 123160 909.62 554 540 134.8

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