ASTROSAT CZTI

Data Quality Report

Orbit 48108

Creation date: 2024-08-20T18:07:48.059234
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/AS1A13_071T03_9000006400_48108cztM0_level2.fits modeM0/AS1A13_071T03_9000006400_48108cztM0_level2_quad_clean.evt
Size (bytes)449,809,92084,859,200
Size429.0 MB 80.9 MB
Events in quadrant A7,495,351711,326
Events in quadrant B1,204,598135
Events in quadrant C3,031,147732,106
Events in quadrant D4,368,781639,244

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278742
B074262
C0141692
D0177982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69823785.413922%
B6982698099.971355%
C6982781.117158%
D69823955.657405%

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 7777 6982 54 54 0.69% 0.77%
B 7776 6981 0 0 0.00% 0.00%
C 7777 6982 0 0 0.00% 0.00%
D 7777 6982 302 302 3.88% 4.33%

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 10 83 4166631 25441.94 773 753 163.7
A 13 248 187091 1138.01 773 753 163.7
A 14 248 123196 747.79 773 753 163.7
B 2 177 963266 80052.43 50 49 12.0
B 4 21 30140 2500.85 50 49 12.0
B 0 200 4507 370.5 50 49 12.0
C 13 61 5114 23.55 774 777 184.2
C 3 110 4495 20.19 774 777 184.2
C 14 254 4329 19.28 774 777 184.2
D 2 37 927737 4856.28 758 734 190.9
D 12 2 342871 1792.35 758 734 190.9
D 2 234 36163 185.6 758 734 190.9

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