ASTROSAT CZTI

Data Quality Report

Orbit 29820

Creation date: 2024-06-27T20:08:02.536571
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_291T01_9000004278_29820cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29820cztM0_level2_quad_clean.evt
Size (bytes)533,557,44099,351,360
Size508.8 MB 94.7 MB
Events in quadrant A3,378,832666,320
Events in quadrant B5,285,224667,037
Events in quadrant C3,551,178621,796
Events in quadrant D3,514,051611,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139203
B0196564
C0143573
D0145533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337971.530693%
B63361722.714646%
C63361852.919823%
D6336931.467803%

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 7522 6339 4 4 0.05% 0.06%
B 7521 6338 0 0 0.00% 0.00%
C 7521 6338 24 24 0.32% 0.38%
D 7521 6338 25 25 0.33% 0.39%

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 12 96 67314 392.21 858 844 169.5
A 13 254 11925 65.38 858 844 169.5
A 3 137 7898 41.62 858 844 169.5
B 6 159 1870558 11951.33 849 832 156.4
B 0 190 43508 272.79 849 832 156.4
B 0 230 22445 138.15 849 832 156.4
C 10 22 201479 1091.13 802 810 183.9
C 14 238 136314 736.8 802 810 183.9
C 3 233 67963 365.14 802 810 183.9
D 8 195 261081 1372.37 810 790 189.7
D 12 79 73909 385.51 810 790 189.7
D 2 250 43700 226.24 810 790 189.7

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