ASTROSAT CZTI

Data Quality Report

Orbit 36386

Creation date: 2022-06-21T15:00:26.158622
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/AS1A11_097T24_9000005196_36386cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36386cztM0_level2_quad_clean.evt
Size (bytes)510,433,92059,397,120
Size486.8 MB 56.6 MB
Events in quadrant A2,746,183367,816
Events in quadrant B3,651,810354,543
Events in quadrant C4,907,084346,172
Events in quadrant D3,774,368338,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115853
B0144432
C0182732
D0149492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560080.142857%
B56003636.482143%
C56002584.607143%
D56002153.839286%

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 7183 5601 2 2 0.03% 0.04%
B 7183 5601 280 280 3.90% 5.00%
C 7183 5601 251 251 3.49% 4.48%
D 7183 5601 183 183 2.55% 3.27%

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 183294 1370.84 658 647 133.2
A 13 254 9110 63.52 658 647 133.2
A 3 137 7115 48.54 658 647 133.2
B 5 172 997088 8059.4 630 614 123.6
B 5 255 84036 674.71 630 614 123.6
B 15 85 30438 241.21 630 614 123.6
C 4 254 2103984 14431.0 620 624 145.8
C 15 214 239880 1641.52 620 624 145.8
C 0 10 116797 797.05 620 624 145.8
D 12 6 659295 4319.75 623 605 152.5
D 2 137 297165 1944.87 623 605 152.5
D 2 250 112172 731.66 623 605 152.5

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