ASTROSAT CZTI

Data Quality Report

Orbit 17399

Creation date: 2024-06-27T17:36:01.559808
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_030T01_9000002574cztM0_level2.evt modeM0/AS1T03_030T01_9000002574cztM0_level2_quad_clean.evt
Size (bytes)521,887,680103,590,720
Size497.7 MB 98.8 MB
Events in quadrant A3,299,375695,022
Events in quadrant B3,422,689695,894
Events in quadrant C3,990,082652,549
Events in quadrant D4,685,893644,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137482
B0140852
C0159582
D0180852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01310
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64411051.630182%
B64421211.878299%
C64411442.235678%
D64412994.642136%

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 7721 6442 0 0 0.00% 0.00%
B 7722 6443 7 7 0.09% 0.11%
C 7721 6442 0 0 0.00% 0.00%
D 7721 6442 197 197 2.55% 3.06%

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 0 226 7502 38.74 858 842 171.9
A 12 194 6509 32.96 858 842 171.9
A 3 137 5811 28.9 858 842 171.9
B 7 220 35048 212.61 847 826 161.0
B 0 197 25817 155.26 847 826 161.0
B 12 111 17478 103.46 847 826 161.0
C 3 233 682156 3705.79 802 809 183.9
C 14 238 126500 683.62 802 809 183.9
C 5 218 54071 289.69 802 809 183.9
D 13 232 516676 2623.14 817 795 196.7
D 1 52 512086 2599.81 817 795 196.7
D 11 176 252184 1278.26 817 795 196.7

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