ASTROSAT CZTI

Data Quality Report

Orbit 23537

Creation date: 2024-06-27T18:55:52.482744
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_011T01_9000003482_23537cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23537cztM0_level2_quad_clean.evt
Size (bytes)426,862,08086,662,080
Size407.1 MB 82.6 MB
Events in quadrant A2,834,037570,948
Events in quadrant B3,042,965573,902
Events in quadrant C2,794,955546,245
Events in quadrant D3,866,713533,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117671
B0124261
C0117881
D0152871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5722570.996155%
B5722931.625306%
C5722671.170919%
D57231672.918050%

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 6987 5722 0 0 0.00% 0.00%
B 6987 5722 11 11 0.16% 0.19%
C 6987 5723 0 0 0.00% 0.00%
D 6988 5724 105 105 1.50% 1.83%

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 13 254 9956 62.72 735 720 147.2
A 0 226 6334 38.13 735 720 147.2
A 3 137 5984 35.75 735 720 147.2
B 0 189 97000 711.74 719 703 135.3
B 3 64 28221 203.39 719 703 135.3
B 15 32 27314 196.69 719 703 135.3
C 14 238 111589 700.06 687 691 158.4
C 7 247 4940 26.82 687 691 158.4
C 13 61 4783 25.83 687 691 158.4
D 9 85 1080352 6464.44 701 681 167.0
D 1 52 79978 474.78 701 681 167.0
D 12 233 25613 149.28 701 681 167.0

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