ASTROSAT CZTI

Data Quality Report

Orbit 06844

Creation date: 2024-06-27T15:12:17.579125
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_174T04_9000000938_06844cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06844cztM0_level2_quad_clean.evt
Size (bytes)358,799,04032,803,200
Size342.2 MB 31.3 MB
Events in quadrant A2,611,577170,701
Events in quadrant B2,290,563174,671
Events in quadrant C2,303,408171,805
Events in quadrant D3,358,911163,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010730155
B09548118
C09679120
D013377161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4433280.631626%
B443720.045076%
C4439100.225276%
D44371904.282173%

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 7773 4443 4 4 0.05% 0.09%
B 7773 4443 0 0 0.00% 0.00%
C 7773 4448 5 5 0.06% 0.11%
D 7773 4443 136 136 1.75% 3.06%

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 351937 2978.17 583 570 118.0
A 14 111 9268 73.72 583 570 118.0
A 12 194 5870 44.92 583 570 118.0
B 0 219 18031 159.46 578 567 109.5
B 12 111 10398 89.76 578 567 109.5
B 0 228 9671 83.12 578 567 109.5
C 10 22 69977 535.56 562 566 129.6
C 9 68 29887 226.23 562 566 129.6
C 9 247 6381 44.87 562 566 129.6
D 2 33 405215 2962.49 560 543 136.6
D 8 195 321955 2352.96 560 543 136.6
D 14 34 255325 1865.18 560 543 136.6

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