ASTROSAT CZTI

Data Quality Report

Orbit 09031

Creation date: 2024-06-27T15:40:17.287949
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/AS1G07_029T02_9000001256_09031cztM0_level2.evt modeM0/AS1G07_029T02_9000001256_09031cztM0_level2_quad_clean.evt
Size (bytes)627,891,84065,695,680
Size598.8 MB 62.7 MB
Events in quadrant A3,723,771416,284
Events in quadrant B3,179,627423,111
Events in quadrant C2,910,457410,937
Events in quadrant D8,796,839320,401

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147852
B0129511
C0123461
D0301921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59871382.304994%
B5987971.620177%
C5987450.751629%
D5987223737.364289%

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 7262 5987 37 37 0.51% 0.62%
B 7262 5987 5 5 0.07% 0.08%
C 7262 5988 0 0 0.00% 0.00%
D 7262 5987 2036 2036 28.04% 34.01%

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 5 561021 3566.25 780 765 157.1
A 1 162 88481 558.35 780 765 157.1
A 1 178 22791 140.2 780 765 157.1
B 4 48 61271 414.24 782 766 146.1
B 10 252 15911 103.69 782 766 146.1
B 12 111 15502 100.89 782 766 146.1
C 13 61 5657 28.5 746 750 172.2
C 3 202 1855 6.42 746 750 172.2
C -1 -1 -1 -1.0 746 750 172.2
D 1 52 6050782 39330.56 635 621 153.8
D 6 225 253169 1641.75 635 621 153.8
D 13 122 21295 134.4 635 621 153.8

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