ASTROSAT CZTI

Data Quality Report

Orbit 01209

Creation date: 2024-06-27T14:09:11.236533
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/AS1G04_007T02_9000000220_01209cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01209cztM0_level2_quad_clean.evt
Size (bytes)1,085,132,16099,904,320
Size1.0 GB 95.3 MB
Events in quadrant A7,985,134654,129
Events in quadrant B8,258,385649,848
Events in quadrant C8,056,701632,976
Events in quadrant D8,119,601622,202

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284432
B0292711
C0287141
D0289031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6690110.164425%
B6690210.313901%
C6690220.328849%
D6690861.285501%

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 7390 6690 199 199 2.69% 2.97%
B 7390 6690 212 212 2.87% 3.17%
C 7390 6690 175 175 2.37% 2.62%
D 7390 6690 333 333 4.51% 4.98%

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 14 68717 136.29 2033 2052 489.2
A 12 243 49507 97.01 2033 2052 489.2
A 13 34 22388 41.57 2033 2052 489.2
B 15 22 54310 104.08 2132 2138 501.3
B 14 3 35353 66.26 2132 2138 501.3
B 15 255 20106 35.85 2132 2138 501.3
C 15 241 349488 636.08 1957 2026 546.3
C 3 111 30903 52.86 1957 2026 546.3
C 3 79 29416 50.14 1957 2026 546.3
D 1 83 413416 697.17 1889 1959 590.2
D 10 84 401429 676.86 1889 1959 590.2
D 1 239 111660 185.88 1889 1959 590.2

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