ASTROSAT CZTI

Data Quality Report

Orbit 14859

Creation date: 2024-06-27T17:00:33.528780
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/AS1A04_218T01_9000002194_14859cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14859cztM0_level2_quad_clean.evt
Size (bytes)720,714,24090,555,840
Size687.3 MB 86.4 MB
Events in quadrant A3,604,275603,431
Events in quadrant B4,335,981582,157
Events in quadrant C3,737,311587,650
Events in quadrant D9,636,044440,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155133
B0176652
C0156442
D0337932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7578410.541040%
B75782323.061494%
C7578210.277118%
D7578239631.617841%

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 9119 7581 0 0 0.00% 0.00%
B 9119 7581 114 114 1.25% 1.50%
C 9119 7581 1 1 0.01% 0.01%
D 9119 7581 2098 2098 23.01% 27.67%

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 12 189 62002 329.98 912 891 185.2
A 9 143 26213 136.73 912 891 185.2
A 15 239 8637 41.83 912 891 185.2
B 3 64 456737 2630.55 897 873 173.3
B 0 229 141639 812.29 897 873 173.3
B 0 189 98214 561.7 897 873 173.3
C 3 233 279773 1382.28 874 878 201.8
C 6 96 49206 239.53 874 878 201.8
C 13 61 6224 26.5 874 878 201.8
D 13 104 4406074 24336.74 729 708 181.0
D 7 254 1478608 8164.42 729 708 181.0
D 15 0 893006 4929.36 729 708 181.0

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