ASTROSAT CZTI

Data Quality Report

Orbit 24992

Creation date: 2024-06-27T19:12:26.936722
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_127T03_9000003662_24992cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_24992cztM0_level2_quad_clean.evt
Size (bytes)474,831,36069,822,720
Size452.8 MB 66.6 MB
Events in quadrant A3,399,960413,068
Events in quadrant B3,506,597420,388
Events in quadrant C3,485,280399,810
Events in quadrant D3,515,676395,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144192
B0146602
C0146122
D0148942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6959701.005892%
B6959841.207070%
C69591091.566317%
D6959600.862193%

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 7814 6960 0 0 0.00% 0.00%
B 7814 6960 4 4 0.05% 0.06%
C 7814 6960 1 1 0.01% 0.01%
D 7814 6960 6 6 0.08% 0.09%

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 6 16 21892 118.15 873 856 178.0
A 4 2 11958 62.35 873 856 178.0
A 13 254 10591 54.68 873 856 178.0
B 0 190 38634 227.52 865 842 166.1
B 10 246 24673 143.47 865 842 166.1
B 12 111 20524 118.49 865 842 166.1
C 14 238 132095 670.39 829 833 195.8
C 7 247 96648 489.36 829 833 195.8
C 0 10 17421 84.72 829 833 195.8
D 1 52 133499 644.09 848 825 206.0
D 8 195 74603 358.17 848 825 206.0
D 10 70 51763 247.29 848 825 206.0

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