ASTROSAT CZTI

Data Quality Report

Orbit 31394

Creation date: 2024-06-27T20:27:43.586957
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/AS1T04_027T01_9000004552_31394cztM0_level2.evt modeM0/AS1T04_027T01_9000004552_31394cztM0_level2_quad_clean.evt
Size (bytes)459,659,52070,781,760
Size438.4 MB 67.5 MB
Events in quadrant A2,775,600444,193
Events in quadrant B4,485,125446,327
Events in quadrant C3,013,687430,127
Events in quadrant D3,260,614424,978

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01204
B01215
C01215
D01215

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012294568
B018125808
C013024683
D013964649

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5688110.193390%
B5684410.721323%
C56821252.199930%
D5686480.844179%

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 7236 5698 0 0 0.00% 0.00%
B 7237 5695 2 2 0.03% 0.04%
C 7237 5695 20 20 0.28% 0.35%
D 7237 5697 33 33 0.46% 0.58%

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 13 254 12413 82.02 718 705 142.7
A 3 137 6962 43.83 718 705 142.7
A 0 226 5934 36.63 718 705 142.7
B 6 159 1597932 11738.91 716 699 136.1
B 4 80 32228 231.72 716 699 136.1
B 0 190 24201 172.73 716 699 136.1
C 14 238 134479 841.43 690 696 159.0
C 0 10 115802 723.96 690 696 159.0
C 14 254 28593 175.46 690 696 159.0
D 8 195 248131 1424.37 691 678 173.7
D 2 250 128309 734.66 691 678 173.7
D 10 203 111538 638.12 691 678 173.7

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