ASTROSAT CZTI

Data Quality Report

Orbit 34586

Creation date: 2022-02-20T00:55:47.299471
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/AS1A09_038T43_9000004946_34586cztM0_level2.evt modeM0/AS1A09_038T43_9000004946_34586cztM0_level2_quad_clean.evt
Size (bytes)483,350,40090,483,840
Size461.0 MB 86.3 MB
Events in quadrant A2,245,523621,785
Events in quadrant B3,238,214609,981
Events in quadrant C2,500,643610,731
Events in quadrant D6,322,177553,930

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099621
B0128091
C0105111
D0222991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489760.122524%
B48972976.064938%
C4897180.367572%
D48983968.084933%

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 4897 4897 2 2 0.04% 0.04%
B 4897 4897 209 209 4.27% 4.27%
C 4897 4897 14 14 0.29% 0.29%
D 4898 4898 539 539 11.00% 11.00%

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 9 143 37342 328.81 557 545 111.9
A 10 83 27415 240.11 557 545 111.9
A 13 6 13611 116.76 557 545 111.9
B 5 172 659262 6279.55 543 527 104.9
B 5 255 327033 3112.5 543 527 104.9
B 0 189 34287 321.83 543 527 104.9
C 15 214 202072 1597.18 542 546 126.2
C 14 67 93528 736.92 542 546 126.2
C 0 10 60353 474.0 542 546 126.2
D 8 195 3500058 24702.42 523 511 141.7
D 13 249 209516 1475.31 523 511 141.7
D 1 52 124899 878.02 523 511 141.7

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