ASTROSAT CZTI

Data Quality Report

Orbit 02461

Creation date: 2024-06-27T14:18:06.286862
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/AS1G02_018T06_9000000370_02461cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02461cztM0_level2_quad_clean.evt
Size (bytes)424,411,20068,284,800
Size404.8 MB 65.1 MB
Events in quadrant A3,045,316402,516
Events in quadrant B3,174,041414,333
Events in quadrant C3,019,167413,336
Events in quadrant D3,186,625397,957

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130263
B0133122
C0130322
D0137022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6287721.145220%
B6287921.463337%
C6287641.017974%
D6287671.065691%

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 7552 6288 0 0 0.00% 0.00%
B 7552 6288 14 14 0.19% 0.22%
C 7552 6288 0 0 0.00% 0.00%
D 7552 6288 9 9 0.12% 0.14%

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 0 226 9147 52.6 784 769 159.3
A 12 194 8820 50.55 784 769 159.3
A 0 149 8099 46.02 784 769 159.3
B 5 172 50603 329.18 798 778 151.4
B 0 191 16100 101.22 798 778 151.4
B 4 200 15779 99.1 798 778 151.4
C 13 61 7141 35.77 768 773 178.0
C 12 4 6494 32.13 768 773 178.0
C 9 191 5275 25.29 768 773 178.0
D 7 67 180601 1001.75 759 741 179.5
D 9 64 37814 206.48 759 741 179.5
D 2 184 17233 91.85 759 741 179.5

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