ASTROSAT CZTI

Data Quality Report

Orbit 26245

Creation date: 2024-06-27T19:26:33.629469
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/AS1A09_079T03_9000003790_26245cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26245cztM0_level2_quad_clean.evt
Size (bytes)457,231,68081,397,440
Size436.1 MB 77.6 MB
Events in quadrant A3,294,645512,528
Events in quadrant B2,870,884531,990
Events in quadrant C3,542,247505,206
Events in quadrant D3,733,558497,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137050
B0123580
C0143030
D0153080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59731262.109493%
B5973741.238908%
C59732273.800435%
D59731602.678721%

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 6973 5974 44 44 0.63% 0.74%
B 6973 5974 1 1 0.01% 0.02%
C 6973 5974 124 124 1.78% 2.08%
D 6973 5974 96 96 1.38% 1.61%

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 0 13 472102 3205.63 729 713 147.1
A 13 254 10086 63.74 729 713 147.1
A 3 1 7602 46.85 729 713 147.1
B 12 111 16780 114.27 731 712 140.6
B 11 111 14602 98.78 731 712 140.6
B 14 111 13261 89.25 731 712 140.6
C 3 233 690585 4237.66 695 699 162.8
C 14 238 112184 684.8 695 699 162.8
C 2 16 32001 192.27 695 699 162.8
D 1 52 949828 5631.75 704 686 168.5
D 12 233 92990 547.69 704 686 168.5
D 2 234 27270 157.74 704 686 168.5

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