ASTROSAT CZTI

Data Quality Report

Orbit 26788

Creation date: 2024-06-27T19:32:56.821086
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/AS1A09_079T01_9000003864_26788cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26788cztM0_level2_quad_clean.evt
Size (bytes)548,049,600119,977,920
Size522.7 MB 114.4 MB
Events in quadrant A4,618,354787,751
Events in quadrant B3,449,631815,642
Events in quadrant C3,467,299790,921
Events in quadrant D4,596,656760,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185120
B0145970
C0146100
D0183300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6869370.538652%
B6869560.815257%
C68691021.484932%
D68693675.342845%

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 7904 6870 0 0 0.00% 0.00%
B 7904 6870 11 11 0.14% 0.16%
C 7904 6870 24 24 0.30% 0.35%
D 7904 6870 273 273 3.45% 3.97%

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 0 13 1392324 8375.03 831 814 166.1
A 6 16 18392 105.8 831 814 166.1
A 13 254 11646 65.19 831 814 166.1
B 3 64 87900 547.98 839 817 158.9
B 10 246 44012 271.81 839 817 158.9
B 0 229 25953 158.17 839 817 158.9
C 14 238 131479 684.24 816 820 191.0
C 15 208 71843 371.94 816 820 191.0
C 3 233 64950 335.84 816 820 191.0
D 1 52 679872 3574.37 801 784 190.0
D 7 80 582905 3063.98 801 784 190.0
D 2 250 189775 994.75 801 784 190.0

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