ASTROSAT CZTI

Data Quality Report

Orbit 04802

Creation date: 2024-06-27T14:47:12.126233
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_002T03_9000000608_04802cztM0_level2.evt modeM0/AS1G05_002T03_9000000608_04802cztM0_level2_quad_clean.evt
Size (bytes)442,287,36079,502,400
Size421.8 MB 75.8 MB
Events in quadrant A3,523,989491,353
Events in quadrant B3,084,614502,665
Events in quadrant C2,797,954506,363
Events in quadrant D3,572,185479,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144342
B0131021
C0125261
D0149181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61211732.826336%
B6121520.849534%
C6121370.604476%
D61211392.270871%

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 7196 6121 79 79 1.10% 1.29%
B 7196 6121 4 4 0.06% 0.07%
C 7196 6121 1 1 0.01% 0.02%
D 7196 6121 72 72 1.00% 1.18%

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 50 528757 3516.81 729 712 150.1
A 13 251 118901 787.15 729 712 150.1
A 15 174 29020 188.53 729 712 150.1
B 15 204 119439 832.88 736 718 142.5
B 5 175 45864 316.72 736 718 142.5
B 10 16 36905 253.87 736 718 142.5
C 12 4 28300 167.28 708 711 164.9
C 13 61 5800 30.86 708 711 164.9
C 1 16 5071 26.44 708 711 164.9
D 13 235 272103 1596.13 706 687 170.0
D 2 234 172504 1010.41 706 687 170.0
D 2 136 157306 921.04 706 687 170.0

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