ASTROSAT CZTI

Data Quality Report

Orbit 21846

Creation date: 2024-06-27T18:32:58.105678
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_004T01_9000003230_21846cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21846cztM0_level2_quad_clean.evt
Size (bytes)495,037,44076,118,400
Size472.1 MB 72.6 MB
Events in quadrant A3,422,203454,476
Events in quadrant B3,651,651463,018
Events in quadrant C3,457,192448,630
Events in quadrant D3,968,389433,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150471
B0154591
C0149901
D0166741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72541311.805900%
B72541882.591674%
C72541702.343535%
D72551592.191592%

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 7524 7255 0 0 0.00% 0.00%
B 7524 7254 20 20 0.27% 0.28%
C 7524 7254 1 1 0.01% 0.01%
D 7525 7256 42 42 0.56% 0.58%

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 4 2 23076 123.86 881 861 179.4
A 13 254 13521 70.59 881 861 179.4
A 0 226 7548 37.28 881 861 179.4
B 3 64 85360 490.14 884 863 172.4
B 0 190 34616 195.79 884 863 172.4
B 0 197 33248 187.85 884 863 172.4
C 14 238 130100 640.46 849 852 201.8
C 4 175 7233 31.62 849 852 201.8
C 13 61 5891 24.97 849 852 201.8
D 1 52 271518 1207.12 847 829 224.2
D 13 174 180765 802.41 847 829 224.2
D 7 238 108198 478.8 847 829 224.2

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