ASTROSAT CZTI

Data Quality Report

Orbit 24350

Creation date: 2024-06-27T19:05:04.269262
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/AS1A07_145T01_9000003594_24350cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24350cztM0_level2_quad_clean.evt
Size (bytes)739,252,800102,504,960
Size705.0 MB 97.8 MB
Events in quadrant A3,434,048666,610
Events in quadrant B3,499,849691,733
Events in quadrant C5,026,077655,346
Events in quadrant D9,932,004578,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150602
B0151282
C0200552
D0346782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73401171.594005%
B73411522.070563%
C73412593.528130%
D7341167222.776189%

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 7755 7340 0 0 0.00% 0.00%
B 7756 7341 1 1 0.01% 0.01%
C 7756 7341 6 6 0.08% 0.08%
D 7756 7341 1545 1545 19.92% 21.05%

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 13 254 10033 51.04 889 870 179.5
A 3 137 8098 40.26 889 870 179.5
A 0 226 7545 37.18 889 870 179.5
B 12 111 21475 119.02 891 869 173.1
B 11 111 18767 103.37 891 869 173.1
B 14 111 16919 92.7 891 869 173.1
C 7 247 1542861 7762.19 850 854 198.7
C 14 238 135942 680.01 850 854 198.7
C 2 16 27276 133.0 850 854 198.7
D 7 238 3003119 15637.54 791 769 192.0
D 1 52 1874085 9757.04 791 769 192.0
D 12 218 1055241 5492.15 791 769 192.0

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