ASTROSAT CZTI

Data Quality Report

Orbit 31197

Creation date: 2024-06-27T20:24:53.310049
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/AS1A10_103T02_9000004514_31197cztM0_level2.evt modeM0/AS1A10_103T02_9000004514_31197cztM0_level2_quad_clean.evt
Size (bytes)423,031,68054,253,440
Size403.4 MB 51.7 MB
Events in quadrant A2,085,848350,784
Events in quadrant B4,464,554326,414
Events in quadrant C2,217,724336,922
Events in quadrant D3,751,120325,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089511
B0162191
C092792
D0142781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4299360.837404%
B429952312.165620%
C4298882.047464%
D42982555.932992%

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 4894 4300 0 0 0.00% 0.00%
B 4894 4300 224 224 4.58% 5.21%
C 4893 4299 4 4 0.08% 0.09%
D 4893 4299 170 170 3.47% 3.95%

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 7779 66.11 540 528 109.7
A 3 137 5748 47.59 540 528 109.7
A 0 226 4632 37.42 540 528 109.7
B 6 159 1209040 12084.05 517 503 100.0
B 4 80 1134348 11337.21 517 503 100.0
B 0 190 23752 232.46 517 503 100.0
C 14 238 84213 681.07 517 518 122.9
C 0 10 78835 637.31 517 518 122.9
C 4 175 12605 98.36 517 518 122.9
D 8 195 1099702 8532.64 512 498 128.8
D 12 79 629599 4883.44 512 498 128.8
D 13 249 27885 212.59 512 498 128.8

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