ASTROSAT CZTI

Data Quality Report

Orbit 20259

Creation date: 2024-06-27T18:13:07.974766
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/AS1A05_117T01_9000003002_20259cztM0_level2.evt modeM0/AS1A05_117T01_9000003002_20259cztM0_level2_quad_clean.evt
Size (bytes)594,858,240103,268,160
Size567.3 MB 98.5 MB
Events in quadrant A4,244,630659,490
Events in quadrant B4,214,213668,196
Events in quadrant C3,773,853644,709
Events in quadrant D5,268,967627,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174552
B0174832
C0158432
D0208573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75742563.379984%
B75751742.297030%
C75751031.359736%
D75743244.277792%

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 9354 7576 119 119 1.27% 1.57%
B 9355 7577 53 53 0.57% 0.70%
C 9355 7577 1 1 0.01% 0.01%
D 9354 7576 171 171 1.83% 2.26%

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 14 238 554918 2919.43 932 911 189.8
A 4 2 68181 354.49 932 911 189.8
A 12 96 19174 96.24 932 911 189.8
B 7 220 310951 1719.61 932 908 180.3
B 0 244 63940 349.6 932 908 180.3
B 0 230 57005 311.13 932 908 180.3
C 14 238 140337 651.71 909 913 213.9
C 3 233 66936 308.61 909 913 213.9
C 0 207 11951 51.6 909 913 213.9
D 1 52 1263686 5728.77 907 883 220.4
D 2 16 428640 1940.54 907 883 220.4
D 2 234 47418 211.11 907 883 220.4

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