ASTROSAT CZTI

Data Quality Report

Orbit 10831

Creation date: 2024-06-27T16:04:18.657566
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/AS1A03_086T01_9000001568_10831cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10831cztM0_level2_quad_clean.evt
Size (bytes)578,240,640101,456,640
Size551.5 MB 96.8 MB
Events in quadrant A4,973,734645,453
Events in quadrant B4,506,404655,163
Events in quadrant C3,268,811663,134
Events in quadrant D4,289,626621,951

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195062
B0179501
C0144541
D0173591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69893174.535699%
B69893464.950637%
C6989470.672485%
D69891001.430820%

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 7159 6990 134 134 1.87% 1.92%
B 7159 6990 138 138 1.93% 1.97%
C 7159 6990 1 1 0.01% 0.01%
D 7159 6990 65 65 0.91% 0.93%

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 8 5 1708576 9791.62 841 823 174.4
A 13 251 19565 107.46 841 823 174.4
A 13 248 7711 39.49 841 823 174.4
B 4 239 1046077 6432.9 845 829 162.5
B 0 214 47249 285.69 845 829 162.5
B 0 219 31010 185.75 845 829 162.5
C 5 128 8843 41.0 833 839 195.2
C 13 61 6199 27.45 833 839 195.2
C 14 234 5414 23.43 833 839 195.2
D 8 195 452887 2249.24 822 799 201.0
D 12 233 215488 1068.13 822 799 201.0
D 1 52 142149 703.25 822 799 201.0

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