ASTROSAT CZTI

Data Quality Report

Orbit 18174

Creation date: 2024-06-27T17:46:11.884802
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/AS1A05_063T02_9000002708_18174cztM0_level2.evt modeM0/AS1A05_063T02_9000002708_18174cztM0_level2_quad_clean.evt
Size (bytes)347,771,52064,405,440
Size331.7 MB 61.4 MB
Events in quadrant A2,560,354399,557
Events in quadrant B2,568,877402,706
Events in quadrant C2,534,242395,192
Events in quadrant D2,509,201383,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115
B0111
C0112
D0124

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151383826
B0146733583
C0145423516
D0149503798

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014034
B014234
C014236
D014139

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5257460.875024%
B5258500.950932%
C5295520.982059%
D5248340.647866%

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 7856 5717 6 6 0.08% 0.10%
B 7853 5714 29 29 0.37% 0.51%
C 7858 5721 5 5 0.06% 0.09%
D 7858 5672 17 17 0.22% 0.30%

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 15 174 192007 1533.27 614 599 124.8
A 0 226 5393 38.4 614 599 124.8
A 3 137 4888 34.36 614 599 124.8
B 10 247 133731 1123.07 614 599 118.5
B 12 111 14418 116.57 614 599 118.5
B 11 111 12467 100.12 614 599 118.5
C 4 254 100274 704.41 595 597 141.5
C 14 238 92296 648.03 595 597 141.5
C 3 233 19941 136.7 595 597 141.5
D 7 238 87615 602.0 596 580 144.6
D 9 64 48660 332.56 596 580 144.6
D 1 52 48280 329.93 596 580 144.6

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