ASTROSAT CZTI

Data Quality Report

Orbit 24490

Creation date: 2024-06-27T19:06:30.525387
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/AS1T03_183T01_9000003606_24490cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24490cztM0_level2_quad_clean.evt
Size (bytes)517,011,840134,982,720
Size493.1 MB 128.7 MB
Events in quadrant A3,899,462936,098
Events in quadrant B4,751,249937,292
Events in quadrant C3,278,277895,578
Events in quadrant D3,300,639878,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158831
B0183801
C0137391
D0140981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63202614.129747%
B63204056.408228%
C6321941.487106%
D6321841.328904%

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 7625 6321 94 94 1.23% 1.49%
B 7625 6321 198 198 2.60% 3.13%
C 7626 6322 1 1 0.01% 0.02%
D 7626 6322 32 32 0.42% 0.51%

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 14 111 647021 3927.57 829 816 164.5
A 6 16 21764 127.32 829 816 164.5
A 4 2 21693 126.89 829 816 164.5
B 3 64 1506726 9973.38 816 798 151.0
B 5 172 32083 207.19 816 798 151.0
B 12 111 17277 109.13 816 798 151.0
C 14 238 128753 714.67 786 792 179.0
C 7 247 47803 262.56 786 792 179.0
C 2 16 31686 172.54 786 792 179.0
D 1 52 103013 539.33 797 777 189.6
D 12 218 86691 453.22 797 777 189.6
D 9 1 54304 282.37 797 777 189.6

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