ASTROSAT CZTI

Data Quality Report

Orbit 08918

Creation date: 2024-06-27T15:38:58.793675
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_092T01_9000001240_08918cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08918cztM0_level2_quad_clean.evt
Size (bytes)436,438,080100,670,400
Size416.2 MB 96.0 MB
Events in quadrant A3,298,599658,668
Events in quadrant B3,241,138661,451
Events in quadrant C2,953,971639,937
Events in quadrant D3,274,722628,354

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140242
B0138521
C0135081
D0143781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66031151.741633%
B6603851.287294%
C6603520.787521%
D66031011.529608%

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 7538 6603 10 10 0.13% 0.15%
B 7538 6603 5 5 0.07% 0.08%
C 7538 6603 0 0 0.00% 0.00%
D 7538 6603 44 44 0.58% 0.67%

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 8 5 175836 1085.9 793 775 161.2
A 5 16 44697 272.45 793 775 161.2
A 15 174 16747 99.07 793 775 161.2
B 0 214 113533 750.01 791 773 150.3
B 12 111 15246 96.26 791 773 150.3
B 0 219 12456 77.71 791 773 150.3
C 9 68 7311 37.74 755 757 173.7
C 13 61 5804 29.06 755 757 173.7
C 3 202 1827 6.16 755 757 173.7
D 1 52 156636 763.2 759 742 204.3
D 7 71 95939 466.05 759 742 204.3
D 2 14 63998 309.68 759 742 204.3

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