ASTROSAT CZTI

Data Quality Report

Orbit 24129

Creation date: 2024-06-27T19:02:26.387508
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_069T01_9000003570_24129cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24129cztM0_level2_quad_clean.evt
Size (bytes)517,976,64067,273,920
Size494.0 MB 64.2 MB
Events in quadrant A3,641,813410,431
Events in quadrant B3,711,999417,977
Events in quadrant C4,257,916384,411
Events in quadrant D3,642,302378,589

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145842
B0149002
C0165722
D0145992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6384550.861529%
B63841021.597744%
C63833245.075983%
D6383390.610998%

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 7754 6385 0 0 0.00% 0.00%
B 7754 6385 3 3 0.04% 0.05%
C 7753 6384 140 140 1.81% 2.19%
D 7753 6384 4 4 0.05% 0.06%

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 2 250 13572 68.34 938 923 185.1
A 13 254 10788 53.3 938 923 185.1
A 6 16 10500 51.74 938 923 185.1
B 4 171 22357 124.14 935 919 172.7
B 12 111 19718 108.86 935 919 172.7
B 11 111 17593 96.55 935 919 172.7
C 0 239 484936 2442.89 863 872 198.2
C 2 16 261863 1317.12 863 872 198.2
C 14 238 140476 704.53 863 872 198.2
D 8 195 191754 882.44 884 861 216.3
D 1 52 28074 125.8 884 861 216.3
D 12 233 27468 123.0 884 861 216.3

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