ASTROSAT CZTI

Data Quality Report

Orbit 13291

Creation date: 2024-06-27T16:38:52.616348
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/AS1T02_013T01_9000001976_13291cztM0_level2.evt modeM0/AS1T02_013T01_9000001976_13291cztM0_level2_quad_clean.evt
Size (bytes)614,039,04075,078,720
Size585.6 MB 71.6 MB
Events in quadrant A3,726,456528,596
Events in quadrant B6,005,934207,846
Events in quadrant C3,693,138530,534
Events in quadrant D4,661,649484,012

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157232
B0227531
C0159471
D0189951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74861201.602992%
B7486250133.409030%
C7486961.282394%
D74863955.276516%

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 7752 7488 2 2 0.03% 0.03%
B 7752 7487 667 667 8.60% 8.91%
C 7752 7488 21 21 0.27% 0.28%
D 7752 7488 262 262 3.38% 3.50%

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 8 15 159757 844.15 915 894 188.2
A 9 143 24295 124.35 915 894 188.2
A 15 69 10606 51.61 915 894 188.2
B 4 239 3445197 28907.48 618 603 119.2
B 10 245 44406 367.6 618 603 119.2
B 4 142 18181 147.52 618 603 119.2
C 15 208 143744 682.9 897 903 209.2
C 14 234 54403 255.77 897 903 209.2
C 13 61 6590 27.19 897 903 209.2
D 1 52 656650 3100.35 870 846 211.5
D 8 195 242792 1143.81 870 846 211.5
D 13 249 239056 1126.15 870 846 211.5

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