ASTROSAT CZTI

Data Quality Report

Orbit 12457

Creation date: 2024-06-27T16:27:39.134378
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/AS1A04_174T01_9000001850_12457cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12457cztM0_level2_quad_clean.evt
Size (bytes)675,305,28094,308,480
Size644.0 MB 89.9 MB
Events in quadrant A9,504,640578,481
Events in quadrant B3,881,099607,943
Events in quadrant C3,044,080621,223
Events in quadrant D3,578,491590,252

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328642
B0158641
C0134021
D0149481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6567133120.268007%
B65672784.233288%
C6567340.517740%
D6567811.233440%

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 7578 6568 1071 1071 14.13% 16.31%
B 7578 6568 161 161 2.12% 2.45%
C 7578 6568 0 0 0.00% 0.00%
D 7578 6568 43 43 0.57% 0.65%

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 13 251 3701385 23724.11 767 751 156.0
A 0 23 2253081 14439.29 767 751 156.0
A 12 189 248852 1590.53 767 751 156.0
B 4 239 621335 4109.84 788 769 151.0
B 11 51 75582 495.47 788 769 151.0
B 3 209 44493 289.57 788 769 151.0
C 13 61 5624 26.51 781 788 182.5
C 3 202 2024 6.77 781 788 182.5
C -1 -1 -1 -1.0 781 788 182.5
D 1 52 468833 2512.6 777 757 186.3
D 8 195 54676 289.43 777 757 186.3
D 13 249 45319 239.2 777 757 186.3

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