ASTROSAT CZTI

Data Quality Report

Orbit 12135

Creation date: 2024-06-27T16:22:53.192873
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/AS1G08_065T01_9000001796_12135cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12135cztM0_level2_quad_clean.evt
Size (bytes)776,931,840117,020,160
Size740.9 MB 111.6 MB
Events in quadrant A8,234,719727,072
Events in quadrant B6,403,305744,632
Events in quadrant C3,886,920767,948
Events in quadrant D4,456,158739,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302523
B0245902
C0172752
D0189822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8125100212.332308%
B81257759.538462%
C8125831.021538%
D81251742.141538%

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 8561 8128 616 616 7.20% 7.58%
B 8561 8128 378 378 4.42% 4.65%
C 8561 8128 4 4 0.05% 0.05%
D 8561 8128 99 99 1.16% 1.22%

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 14 63 4344189 22757.68 939 919 190.8
A 1 162 91852 476.47 939 919 190.8
A 2 79 45904 235.71 939 919 190.8
B 4 239 933992 5119.07 945 922 182.3
B 10 16 823693 4513.94 945 922 182.3
B 3 64 521903 2858.24 945 922 182.3
C 15 208 154701 691.55 949 951 222.3
C 14 234 10721 43.94 949 951 222.3
C 8 128 9743 39.55 949 951 222.3
D 1 52 621095 2723.72 936 909 227.7
D 8 195 133544 582.5 936 909 227.7
D 10 50 45794 197.13 936 909 227.7

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