ASTROSAT CZTI

Data Quality Report

Orbit 30736

Creation date: 2024-06-27T20:19:03.660786
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_071T11_9000004436_30736cztM0_level2.evt modeM0/AS1A10_071T11_9000004436_30736cztM0_level2_quad_clean.evt
Size (bytes)662,132,160103,026,240
Size631.5 MB 98.3 MB
Events in quadrant A3,615,691678,402
Events in quadrant B6,220,274665,062
Events in quadrant C3,713,767645,844
Events in quadrant D6,001,246614,041

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154441
B0238951
C0155751
D0232131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74181001.348072%
B74183244.367754%
C74191782.399245%
D74193935.297210%

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 7673 7418 1 1 0.01% 0.01%
B 7673 7418 129 129 1.68% 1.74%
C 7674 7419 0 0 0.00% 0.00%
D 7674 7419 305 305 3.97% 4.11%

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 13946 68.6 931 911 190.0
A 8 192 9519 45.3 931 911 190.0
A 3 137 9284 44.06 931 911 190.0
B 6 159 2046835 11556.0 910 884 177.0
B 5 172 272418 1533.69 910 884 177.0
B 5 255 166243 933.99 910 884 177.0
C 14 238 143663 677.99 888 892 210.6
C 3 233 75943 356.4 888 892 210.6
C 2 114 17502 78.88 888 892 210.6
D 8 195 1551359 7271.05 888 865 213.2
D 13 249 868754 4069.97 888 865 213.2
D 12 227 61559 284.62 888 865 213.2

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