ASTROSAT CZTI

Data Quality Report

Orbit 06675

Creation date: 2024-06-27T15:10:10.549367
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_102T01_9000000912_06675cztM0_level2.evt modeM0/AS1G06_102T01_9000000912_06675cztM0_level2_quad_clean.evt
Size (bytes)528,854,40092,707,200
Size504.4 MB 88.4 MB
Events in quadrant A3,235,855585,240
Events in quadrant B3,407,069596,998
Events in quadrant C3,220,453591,113
Events in quadrant D5,667,222535,990

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148222
B0152651
C0149401
D0219221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7162520.726054%
B7162791.103044%
C7162500.698129%
D716289212.454622%

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 7932 7165 2 2 0.03% 0.03%
B 7932 7165 5 5 0.06% 0.07%
C 7932 7165 15 15 0.19% 0.21%
D 7932 7165 621 621 7.83% 8.67%

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 15 42179 245.49 820 802 168.5
A 14 111 16643 93.98 820 802 168.5
A 8 160 12273 68.06 820 802 168.5
B 4 81 134502 848.17 829 808 157.6
B 12 111 16201 97.66 829 808 157.6
B 0 214 15813 95.19 829 808 157.6
C 9 247 106426 568.33 797 800 185.9
C 13 61 6359 29.91 797 800 185.9
C 1 3 3978 17.1 797 800 185.9
D 2 33 2059098 11294.34 739 715 182.2
D 8 195 485483 2659.92 739 715 182.2
D 2 152 206769 1130.62 739 715 182.2

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