ASTROSAT CZTI

Data Quality Report

Orbit 25102

Creation date: 2024-06-27T19:13:51.444045
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_206T01_9000003672_25102cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25102cztM0_level2_quad_clean.evt
Size (bytes)602,853,12074,162,880
Size574.9 MB 70.7 MB
Events in quadrant A3,428,067456,099
Events in quadrant B3,723,826463,009
Events in quadrant C3,468,610437,145
Events in quadrant D7,163,967402,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145090
B0153990
C0145250
D0260560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69861011.445749%
B69861502.147151%
C69861121.603206%
D69866228.903521%

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 7786 6986 4 4 0.05% 0.06%
B 7786 6986 9 9 0.12% 0.13%
C 7786 6987 2 2 0.03% 0.03%
D 7786 6986 468 468 6.01% 6.70%

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 15 174 29868 162.02 880 862 179.0
A 13 254 12162 63.12 880 862 179.0
A 3 137 8056 40.18 880 862 179.0
B 0 189 100503 583.02 883 861 170.9
B 0 190 67178 388.03 883 861 170.9
B 5 172 60784 350.62 883 861 170.9
C 14 238 132525 660.1 842 847 199.5
C 7 247 28584 139.05 842 847 199.5
C 0 207 13352 62.69 842 847 199.5
D 7 223 1978657 9840.09 820 799 201.0
D 1 52 1187014 5901.56 820 799 201.0
D 8 195 396517 1968.75 820 799 201.0

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