ASTROSAT CZTI

Data Quality Report

Orbit 08302

Creation date: 2024-06-27T15:31:02.389628
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/AS1G07_080T03_9000001154_08302cztM0_level2.evt modeM0/AS1G07_080T03_9000001154_08302cztM0_level2_quad_clean.evt
Size (bytes)337,029,12061,410,240
Size321.4 MB 58.6 MB
Events in quadrant A2,444,898373,251
Events in quadrant B2,571,371378,205
Events in quadrant C2,419,746367,667
Events in quadrant D2,396,040355,479

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111292
B0113391
C0111711
D0112911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497130.236493%
B5497250.454794%
C5497190.345643%
D5497100.181917%

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 6392 5498 1 1 0.02% 0.02%
B 6392 5498 2 2 0.03% 0.04%
C 6392 5498 5 5 0.08% 0.09%
D 6392 5498 4 4 0.06% 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 13 251 9600 69.69 626 612 129.0
A 0 23 8613 62.04 626 612 129.0
A 13 248 7467 53.15 626 612 129.0
B 4 81 65110 533.68 630 614 120.9
B 0 214 27041 218.67 630 614 120.9
B 0 219 22746 183.13 630 614 120.9
C 9 54 26104 180.11 608 612 141.5
C 10 9 20769 142.41 608 612 141.5
C 13 61 4707 28.93 608 612 141.5
D 2 14 47201 286.89 602 588 162.5
D 7 71 21672 129.77 602 588 162.5
D 2 234 17852 106.26 602 588 162.5

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