ASTROSAT CZTI

Data Quality Report

Orbit 06646

Creation date: 2024-06-27T15:09:49.799656
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/AS1A02_189T01_9000000902_06646cztM0_level2.evt modeM0/AS1A02_189T01_9000000902_06646cztM0_level2_quad_clean.evt
Size (bytes)508,040,640101,960,640
Size484.5 MB 97.2 MB
Events in quadrant A3,514,333658,185
Events in quadrant B3,122,526670,983
Events in quadrant C2,921,902659,871
Events in quadrant D5,357,572616,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152673
B0142572
C0140022
D0209042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6921320.462361%
B6921140.202283%
C6921250.361219%
D69214115.938448%

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 7801 6922 10 10 0.13% 0.14%
B 7801 6922 2 2 0.03% 0.03%
C 7801 6922 0 0 0.00% 0.00%
D 7801 6922 261 261 3.35% 3.77%

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 15 449838 2901.44 765 750 154.8
A 15 239 103604 664.51 765 750 154.8
A 0 226 7699 44.9 765 750 154.8
B 0 214 28539 186.91 778 758 148.6
B 4 81 20285 131.38 778 758 148.6
B 0 228 15983 102.43 778 758 148.6
C 9 16 7199 37.85 741 742 170.6
C 10 22 7014 36.77 741 742 170.6
C 13 61 5944 30.5 741 742 170.6
D 2 152 1073781 6076.95 723 699 176.6
D 2 33 801439 4534.65 723 699 176.6
D 4 95 294650 1664.67 723 699 176.6

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