ASTROSAT CZTI

Data Quality Report

Orbit 04202

Creation date: 2024-06-27T14:38:43.957063
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_240T01_9000000536_04202cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04202cztM0_level2_quad_clean.evt
Size (bytes)628,015,68078,246,720
Size598.9 MB 74.6 MB
Events in quadrant A5,639,185446,112
Events in quadrant B4,989,172465,465
Events in quadrant C3,749,115459,223
Events in quadrant D4,098,077440,805

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222197
B02037622
C01676814
D0180958

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80186297.844849%
B80115186.466109%
C8014580.723733%
D80171822.270176%

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 8560 8022 374 374 4.37% 4.66%
B 8560 8021 227 227 2.65% 2.83%
C 8560 8022 2 2 0.02% 0.02%
D 8560 8022 118 118 1.38% 1.47%

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 1559136 8195.46 923 900 190.1
A 3 1 257846 1351.39 923 900 190.1
A 15 234 197086 1031.83 923 900 190.1
B 3 0 1006401 5551.48 932 910 181.1
B 8 3 239433 1316.92 932 910 181.1
B 15 204 91543 500.4 932 910 181.1
C 9 144 88506 406.79 922 925 215.3
C 8 128 19799 87.67 922 925 215.3
C 10 65 9970 42.01 922 925 215.3
D 13 239 365874 1633.46 911 884 223.4
D 12 110 168697 751.02 911 884 223.4
D 13 223 35819 156.35 911 884 223.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter