ASTROSAT CZTI

Data Quality Report

Orbit 03728

Creation date: 2024-06-27T14:32:55.090989
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_248T01_9000000486_03728cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03728cztM0_level2_quad_clean.evt
Size (bytes)1,328,978,880210,314,880
Size1.2 GB 200.6 MB
Events in quadrant A10,421,7061,330,264
Events in quadrant B10,810,4451,273,852
Events in quadrant C8,264,4651,231,576
Events in quadrant D9,513,6471,270,994

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437374
B0448423
C0376373
D0419793

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183264022.193605%
B183263301.800720%
C18326330.180072%
D183262371.293245%

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 20296 18329 292 292 1.44% 1.59%
B 20296 18328 150 150 0.74% 0.82%
C 20296 18329 2 2 0.01% 0.01%
D 20296 18329 207 207 1.02% 1.13%

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 0 118 1096845 2521.52 2112 2065 434.2
A 8 15 521227 1195.74 2112 2065 434.2
A 15 174 176932 402.76 2112 2065 434.2
B 15 204 984369 2416.22 2119 2073 406.5
B 0 173 749590 1838.72 2119 2073 406.5
B 4 81 311990 762.32 2119 2073 406.5
C 2 53 233180 483.91 2034 2039 477.7
C 14 67 34660 68.29 2034 2039 477.7
C 12 4 24808 47.67 2034 2039 477.7
D 14 34 435186 876.22 2042 1986 494.4
D 13 171 247773 497.14 2042 1986 494.4
D 6 16 229620 460.43 2042 1986 494.4

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
Veto Counter