ASTROSAT CZTI

Data Quality Report

Orbit 24645

Creation date: 2024-06-27T19:08:17.400663
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/AS1C05_012T06_9000003616_24645cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24645cztM0_level2_quad_clean.evt
Size (bytes)464,025,600125,953,920
Size442.5 MB 120.1 MB
Events in quadrant A3,057,630853,212
Events in quadrant B3,232,171863,442
Events in quadrant C4,053,505816,163
Events in quadrant D3,255,230815,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135011
B0139131
C0164971
D0143311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6688190.284091%
B6688470.702751%
C66881181.764354%
D6688160.239234%

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 7608 6689 2 2 0.03% 0.03%
B 7608 6689 14 14 0.18% 0.21%
C 7608 6689 61 61 0.80% 0.91%
D 7608 6689 5 5 0.07% 0.07%

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 11231 65.41 790 773 159.9
A 3 137 7209 40.26 790 773 159.9
A 0 226 6830 37.89 790 773 159.9
B 5 172 95103 632.6 785 765 149.1
B 12 111 18742 120.55 785 765 149.1
B 15 32 17817 114.34 785 765 149.1
C 7 247 698348 4004.25 749 755 174.2
C 2 16 236782 1354.82 749 755 174.2
C 14 238 120148 685.33 749 755 174.2
D 7 238 179412 960.26 766 744 186.1
D 8 195 90950 484.82 766 744 186.1
D 1 52 61110 324.44 766 744 186.1

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