ASTROSAT CZTI

Data Quality Report

Orbit 37675

Creation date: 2024-06-27T21:42:58.488308
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_075T01_9000005342_37675cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37675cztM0_level2_quad_clean.evt
Size (bytes)393,010,56056,796,480
Size374.8 MB 54.2 MB
Events in quadrant A3,174,990333,554
Events in quadrant B2,793,948342,374
Events in quadrant C2,751,945337,157
Events in quadrant D2,808,553322,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127433
B0116732
C0113472
D0119392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5489551.002004%
B5489240.437238%
C548980.145746%
D5489260.473675%

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 7132 5490 23 23 0.32% 0.42%
B 7131 5488 10 10 0.14% 0.18%
C 7131 5488 6 6 0.08% 0.11%
D 7131 5488 26 26 0.36% 0.47%

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 323647 2496.36 640 628 129.4
A 9 143 185999 1432.59 640 628 129.4
A 6 10 106935 821.56 640 628 129.4
B 5 172 129543 1049.68 637 620 122.8
B 0 189 68366 551.58 637 620 122.8
B 0 230 37436 299.75 637 620 122.8
C 15 214 253715 1754.67 621 626 144.2
C 0 10 50549 346.12 621 626 144.2
C 14 254 18273 122.35 621 626 144.2
D 2 249 107133 692.55 624 606 153.8
D 5 222 91203 588.99 624 606 153.8
D 10 199 57007 366.67 624 606 153.8

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