ASTROSAT CZTI

Data Quality Report

Orbit 04622

Creation date: 2024-06-27T14:44:41.362995
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/AS1G05_154T01_9000000576_04622cztM0_level2.evt modeM0/AS1G05_154T01_9000000576_04622cztM0_level2_quad_clean.evt
Size (bytes)552,830,40070,727,040
Size527.2 MB 67.5 MB
Events in quadrant A3,540,754410,723
Events in quadrant B3,745,998411,090
Events in quadrant C3,460,882413,041
Events in quadrant D5,483,397382,303

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156491
B0161240
C0155670
D0216400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75352353.118779%
B75352543.370936%
C75351572.083610%
D75356007.962840%

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 7535 7535 6 6 0.08% 0.08%
B 7535 7535 16 16 0.21% 0.21%
C 7535 7535 1 1 0.01% 0.01%
D 7535 7535 300 300 3.98% 3.98%

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 59043 314.07 891 869 185.2
A 15 174 30463 159.77 891 869 185.2
A 12 133 10170 50.21 891 869 185.2
B 10 16 157603 902.39 899 876 173.7
B 4 48 29953 167.42 899 876 173.7
B 14 167 22368 123.74 899 876 173.7
C 14 48 52614 252.9 871 871 204.6
C 13 61 7330 31.57 871 871 204.6
C 12 4 4358 17.04 871 871 204.6
D 8 112 824922 3993.94 841 814 206.3
D 13 235 790873 3828.93 841 814 206.3
D 2 234 225547 1089.14 841 814 206.3

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