ASTROSAT CZTI

Data Quality Report

Orbit 09098

Creation date: 2024-06-27T15:41:06.678040
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/AS1A03_120T01_9000001266_09098cztM0_level2.evt modeM0/AS1A03_120T01_9000001266_09098cztM0_level2_quad_clean.evt
Size (bytes)1,303,738,560224,648,640
Size1.2 GB 214.2 MB
Events in quadrant A9,186,9551,410,905
Events in quadrant B8,512,0271,429,335
Events in quadrant C8,211,2221,408,718
Events in quadrant D12,354,3511,311,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389924
B0376557
C0374277
D0492883

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180351790.992515%
B180331710.948262%
C180331630.903898%
D1803512466.908788%

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 20045 18035 14 14 0.07% 0.08%
B 20045 18036 23 23 0.11% 0.13%
C 20045 18037 70 70 0.35% 0.39%
D 20045 18037 999 999 4.98% 5.54%

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 8 5 741226 1737.4 2076 2030 425.5
A 1 162 202062 470.15 2076 2030 425.5
A 1 178 68420 156.04 2076 2030 425.5
B 4 48 206211 516.96 2082 2029 395.0
B 4 173 75110 185.03 2082 2029 395.0
B 0 219 68071 167.21 2082 2029 395.0
C 14 234 292173 618.39 2025 2037 469.2
C 12 4 16187 30.16 2025 2037 469.2
C 13 61 15231 28.12 2025 2037 469.2
D 12 233 2963291 5679.57 1965 1915 521.4
D 10 172 431143 823.21 1965 1915 521.4
D 2 14 406075 775.13 1965 1915 521.4

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