ASTROSAT CZTI

Data Quality Report

Orbit 18609

Creation date: 2024-06-27T17:52:22.742974
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/AS1A05_083T01_9000002772_18609cztM0_level2.evt modeM0/AS1A05_083T01_9000002772_18609cztM0_level2_quad_clean.evt
Size (bytes)462,608,64068,008,320
Size441.2 MB 64.9 MB
Events in quadrant A3,293,526401,875
Events in quadrant B3,415,107407,837
Events in quadrant C3,349,436394,689
Events in quadrant D3,499,406390,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139632
B0142382
C0139982
D0147362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6668600.899820%
B6667781.169942%
C66671051.574921%
D6667991.484926%

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 7633 6668 1 1 0.01% 0.01%
B 7632 6667 2 2 0.03% 0.03%
C 7632 6667 12 12 0.16% 0.18%
D 7632 6667 49 49 0.64% 0.73%

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 13 53086 307.47 838 820 170.0
A 13 254 10063 54.37 838 820 170.0
A 9 143 8795 46.91 838 820 170.0
B 0 230 89510 552.61 834 813 160.5
B 0 198 20410 122.1 834 813 160.5
B 12 111 19451 116.12 834 813 160.5
C 14 238 124430 658.22 800 806 187.8
C 9 54 78382 413.04 800 806 187.8
C 3 233 29460 152.56 800 806 187.8
D 1 52 295379 1481.24 816 793 198.9
D 7 238 37433 184.23 816 793 198.9
D 2 234 25162 122.53 816 793 198.9

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