ASTROSAT CZTI

Data Quality Report

Orbit 35581

Creation date: 2022-04-28T06:05:08.454493
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_071T01_9000005096_35581cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35581cztM0_level2_quad_clean.evt
Size (bytes)456,572,16060,131,520
Size435.4 MB 57.3 MB
Events in quadrant A4,351,853357,308
Events in quadrant B3,700,130385,214
Events in quadrant C2,924,189370,088
Events in quadrant D2,519,416365,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160943
B0140082
C0114082
D0105182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48894208.590714%
B488950610.349765%
C48891803.681735%
D4889290.593168%

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 7042 4890 408 408 5.79% 8.34%
B 7042 4890 384 384 5.45% 7.85%
C 7042 4890 126 126 1.79% 2.58%
D 7042 4890 25 25 0.36% 0.51%

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 15 169 1965890 16674.85 583 573 117.9
A 10 83 121418 1025.32 583 573 117.9
A 13 6 9917 79.28 583 573 117.9
B 5 172 1429524 13206.81 568 555 108.2
B 5 255 14534 129.2 568 555 108.2
B 12 111 13387 118.6 568 555 108.2
C 0 10 475702 3559.65 574 579 133.5
C 15 214 202425 1512.24 574 579 133.5
C 14 67 6746 46.2 574 579 133.5
D 7 80 75205 524.35 579 566 142.3
D 8 195 71981 501.7 579 566 142.3
D 2 249 65015 452.76 579 566 142.3

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