ASTROSAT CZTI

Data Quality Report

Orbit 23931

Creation date: 2024-06-27T19:00:11.822221
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_142T01_9000003540_23931cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23931cztM0_level2_quad_clean.evt
Size (bytes)605,643,84098,614,080
Size577.6 MB 94.0 MB
Events in quadrant A3,929,037621,580
Events in quadrant B4,335,293628,640
Events in quadrant C4,395,021592,586
Events in quadrant D5,135,737582,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168252
B0180592
C0179552
D0207022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8073861.065279%
B80731962.427846%
C80732382.948099%
D80731732.142946%

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 8913 8075 0 0 0.00% 0.00%
B 8913 8075 10 10 0.11% 0.12%
C 8913 8075 33 33 0.37% 0.41%
D 8913 8075 73 73 0.82% 0.90%

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 14476 65.97 1016 994 204.4
A 2 250 11457 51.2 1016 994 204.4
A 3 137 9129 39.81 1016 994 204.4
B 15 33 212720 1096.24 1012 988 193.1
B 0 189 95107 487.3 1012 988 193.1
B 12 111 22785 112.85 1012 988 193.1
C 10 9 315042 1388.79 963 967 226.1
C 14 238 152317 669.25 963 967 226.1
C 7 247 148859 653.96 963 967 226.1
D 8 195 848401 3509.68 979 948 241.5
D 12 218 276808 1142.46 979 948 241.5
D 1 52 193001 795.38 979 948 241.5

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