ASTROSAT CZTI

Data Quality Report

Orbit 06252

Creation date: 2024-06-27T15:04:45.578268
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_151T01_9000000818_06252cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06252cztM0_level2_quad_clean.evt
Size (bytes)465,408,00086,204,160
Size443.8 MB 82.2 MB
Events in quadrant A3,054,990550,635
Events in quadrant B3,248,517558,007
Events in quadrant C2,964,252547,123
Events in quadrant D4,401,936517,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131353
B0136892
C0130372
D0173812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6257731.166693%
B6257781.246604%
C6257390.623302%
D62572664.251239%

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 7542 6257 1 1 0.01% 0.02%
B 7542 6257 5 5 0.07% 0.08%
C 7542 6257 0 0 0.00% 0.00%
D 7542 6257 178 178 2.36% 2.84%

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 4 2 7732 44.09 787 769 157.9
A 12 194 7601 43.26 787 769 157.9
A 0 226 7530 42.81 787 769 157.9
B 3 64 95960 644.11 789 774 147.8
B 4 81 57017 380.59 789 774 147.8
B 15 204 29684 195.63 789 774 147.8
C 13 61 6019 30.15 759 763 174.3
C 9 54 4206 19.75 759 763 174.3
C 3 202 1898 6.51 759 763 174.3
D 12 220 1062105 5731.63 755 732 185.2
D 2 63 150603 809.33 755 732 185.2
D 2 152 77117 412.49 755 732 185.2

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