ASTROSAT CZTI

Data Quality Report

Orbit 19872

Creation date: 2024-06-27T18:08:08.393720
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/AS1T03_118T01_9000002962_19872cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19872cztM0_level2_quad_clean.evt
Size (bytes)497,926,08090,938,880
Size474.9 MB 86.7 MB
Events in quadrant A3,683,082591,667
Events in quadrant B3,532,144600,198
Events in quadrant C3,677,966569,037
Events in quadrant D3,759,381553,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151112
B0144872
C0149982
D0151932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6297590.936954%
B6297991.572177%
C6297921.461013%
D62971342.127997%

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 7597 6313 13 13 0.17% 0.21%
B 7597 6313 15 15 0.20% 0.24%
C 7597 6313 9 9 0.12% 0.14%
D 7597 6313 106 106 1.40% 1.68%

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 14 238 363158 2113.15 863 849 171.5
A 0 226 7508 38.84 863 849 171.5
A 3 137 6526 33.11 863 849 171.5
B 7 220 73898 455.23 862 844 160.5
B 0 229 24355 146.51 862 844 160.5
B 0 197 22575 135.41 862 844 160.5
C 9 221 283601 1462.22 834 843 193.4
C 14 238 132655 681.64 834 843 193.4
C 9 54 7181 32.78 834 843 193.4
D 1 52 364832 1825.82 834 814 199.4
D 7 238 102723 511.15 834 814 199.4
D 7 96 71599 355.04 834 814 199.4

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