ASTROSAT CZTI

Data Quality Report

Orbit 25510

Creation date: 2024-06-27T19:18:29.802181
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/AS1A07_147T01_9000003722_25510cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25510cztM0_level2_quad_clean.evt
Size (bytes)481,003,20098,395,200
Size458.7 MB 93.8 MB
Events in quadrant A3,424,269636,201
Events in quadrant B3,547,618639,173
Events in quadrant C3,435,836605,969
Events in quadrant D3,674,180600,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147480
B0150210
C0147570
D0154280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7148841.175154%
B71491021.426773%
C71491001.398797%
D7149991.384809%

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 7508 7150 1 1 0.01% 0.01%
B 7509 7151 1 1 0.01% 0.01%
C 7509 7151 0 0 0.00% 0.00%
D 7509 7151 45 45 0.60% 0.63%

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 11780 60.82 886 865 179.5
A 3 137 8448 42.26 886 865 179.5
A 0 226 7384 36.33 886 865 179.5
B 0 190 83359 486.44 875 850 169.6
B 12 111 20809 117.67 875 850 169.6
B 11 111 18742 105.48 875 850 169.6
C 14 238 131731 655.88 843 848 199.6
C 10 23 7145 31.56 843 848 199.6
C 5 112 6197 26.8 843 848 199.6
D 12 233 154853 739.81 860 837 208.2
D 1 52 154021 735.81 860 837 208.2
D 8 195 83511 397.12 860 837 208.2

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