ASTROSAT CZTI

Data Quality Report

Orbit 03587

Creation date: 2024-06-27T14:31:18.953944
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/AS1G05_246T03_9000000470_03587cztM0_level2.evt modeM0/AS1G05_246T03_9000000470_03587cztM0_level2_quad_clean.evt
Size (bytes)513,414,72076,587,840
Size489.6 MB 73.0 MB
Events in quadrant A3,363,374463,264
Events in quadrant B3,679,666463,027
Events in quadrant C4,509,499457,349
Events in quadrant D3,519,603446,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146353
B0152372
C0183252
D0150262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70131401.996293%
B70131472.096107%
C70133985.675175%
D70131161.654071%

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 9148 7015 0 0 0.00% 0.00%
B 9148 7015 1 1 0.01% 0.01%
C 9148 7015 211 211 2.31% 3.01%
D 9148 7015 14 14 0.15% 0.20%

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 0 50 20777 114.05 861 843 174.8
A 12 194 9143 47.49 861 843 174.8
A 0 226 8927 46.25 861 843 174.8
B 15 204 205224 1214.62 868 847 168.3
B 4 81 34404 199.43 868 847 168.3
B 3 0 24015 137.69 868 847 168.3
C 2 53 920648 4839.49 817 820 190.1
C 15 208 388858 2041.58 817 820 190.1
C 13 61 7007 32.55 817 820 190.1
D 1 84 185233 916.51 831 808 201.2
D 2 33 111848 551.82 831 808 201.2
D 14 34 31745 153.74 831 808 201.2

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
Veto Counter