ASTROSAT CZTI

Data Quality Report

Orbit 23796

Creation date: 2024-06-27T18:58:49.181910
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_113T01_9000003526_23796cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23796cztM0_level2_quad_clean.evt
Size (bytes)592,401,60086,212,800
Size565.0 MB 82.2 MB
Events in quadrant A3,363,917548,037
Events in quadrant B3,495,593563,169
Events in quadrant C3,505,693551,054
Events in quadrant D7,163,649523,060

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139812
B0143212
C0144683
D0255182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6086600.985869%
B6086801.314492%
C60851522.497946%
D608585814.100247%

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 7466 6086 0 0 0.00% 0.00%
B 7466 6086 5 5 0.07% 0.08%
C 7465 6085 0 0 0.00% 0.00%
D 7465 6085 567 567 7.60% 9.32%

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 10585 56.31 872 858 172.7
A 0 226 7571 38.86 872 858 172.7
A 3 137 6861 34.75 872 858 172.7
B 3 64 75894 464.0 873 855 161.7
B 12 111 18405 108.52 873 855 161.7
B 11 111 16338 95.74 873 855 161.7
C 14 238 140889 713.76 860 872 196.2
C 0 10 8775 40.29 860 872 196.2
C 13 61 5991 26.09 860 872 196.2
D 8 195 2699654 13388.07 838 816 201.6
D 13 174 816661 4047.15 838 816 201.6
D 1 52 309310 1530.34 838 816 201.6

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