ASTROSAT CZTI

Data Quality Report

Orbit 07755

Creation date: 2024-06-27T15:23:34.112600
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/AS1G06_064T01_9000001066_07755cztM0_level2.evt modeM0/AS1G06_064T01_9000001066_07755cztM0_level2_quad_clean.evt
Size (bytes)418,250,88098,202,240
Size398.9 MB 93.7 MB
Events in quadrant A2,957,094636,452
Events in quadrant B3,230,325651,476
Events in quadrant C2,989,896634,064
Events in quadrant D3,049,374600,880

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131903
B0139692
C0132562
D0136092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6473190.293527%
B6473370.571605%
C647380.123590%
D6473140.216283%

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 7613 6474 6 6 0.08% 0.09%
B 7613 6474 17 17 0.22% 0.26%
C 7613 6474 0 0 0.00% 0.00%
D 7613 6474 5 5 0.07% 0.08%

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 15 234 13107 79.49 763 748 155.5
A 0 226 7234 41.72 763 748 155.5
A 12 194 6746 38.58 763 748 155.5
B 4 173 42053 278.97 778 759 148.0
B 4 239 38714 256.42 778 759 148.0
B 10 16 33836 223.46 778 759 148.0
C 12 4 28082 156.4 756 762 174.7
C 10 169 9926 52.46 756 762 174.7
C 13 61 5775 28.7 756 762 174.7
D 12 221 136807 744.32 745 722 182.8
D 1 52 36756 197.09 745 722 182.8
D 12 233 24617 130.69 745 722 182.8

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