ASTROSAT CZTI

Data Quality Report

Orbit 24778

Creation date: 2024-06-27T19:09:47.178801
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/AS1A07_147T01_9000003624_24778cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24778cztM0_level2_quad_clean.evt
Size (bytes)471,024,00081,043,200
Size449.2 MB 77.3 MB
Events in quadrant A3,175,877524,168
Events in quadrant B4,113,821500,814
Events in quadrant C3,225,887497,787
Events in quadrant D3,314,279484,361

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132592
B0160732
C0134262
D0140582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6397220.343911%
B63973495.455682%
C6397400.625293%
D6398230.359487%

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 7542 6398 0 0 0.00% 0.00%
B 7542 6398 251 251 3.33% 3.92%
C 7542 6398 0 0 0.00% 0.00%
D 7543 6399 11 11 0.15% 0.17%

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 13 254 9171 50.28 824 810 166.3
A 3 137 7296 39.0 824 810 166.3
A 0 226 6957 36.97 824 810 166.3
B 3 64 914027 6045.39 796 777 151.1
B 4 52 34955 226.25 796 777 151.1
B 0 230 21132 134.74 796 777 151.1
C 14 238 126629 686.2 783 791 183.4
C 2 16 24266 128.01 783 791 183.4
C 10 91 19165 100.19 783 791 183.4
D 1 52 212248 1117.23 785 766 189.3
D 8 195 112585 590.72 785 766 189.3
D 12 233 26352 135.17 785 766 189.3

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