ASTROSAT CZTI

Data Quality Report

Orbit 11555

Creation date: 2024-06-27T16:14:49.310921
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_009T01_9000001696_11555cztM0_level2.evt modeM0/AS1G08_009T01_9000001696_11555cztM0_level2_quad_clean.evt
Size (bytes)739,952,640111,643,200
Size705.7 MB 106.5 MB
Events in quadrant A5,519,773706,184
Events in quadrant B5,787,832714,128
Events in quadrant C3,713,979727,460
Events in quadrant D6,834,111663,542

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220334
B0227533
C0168883
D0259033

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81904125.030525%
B81905136.263736%
C8190410.500611%
D81906608.058608%

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 8741 8194 120 120 1.37% 1.46%
B 8741 8194 219 219 2.51% 2.67%
C 8741 8194 0 0 0.00% 0.00%
D 8741 8194 405 405 4.63% 4.94%

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 5 1279392 6472.93 966 942 197.5
A 1 162 133391 670.6 966 942 197.5
A 9 143 119312 599.32 966 942 197.5
B 4 239 1067316 5699.81 971 946 187.1
B 15 204 528061 2817.46 971 946 187.1
B 3 64 162675 864.45 971 946 187.1
C 13 61 7183 27.94 952 957 222.8
C 3 202 2242 5.77 952 957 222.8
C -1 -1 -1 -1.0 952 957 222.8
D 13 137 2125423 9444.46 921 891 224.9
D 1 52 760876 3378.46 921 891 224.9
D 2 120 174292 770.84 921 891 224.9

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