ASTROSAT CZTI

Data Quality Report

Orbit 50696

Creation date: 2025-02-11T01:46:47.658944
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/AS1T05_241T01_9000006446_50696cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50696cztM0_level2_quad_clean.evt
Size (bytes)530,377,92094,083,840
Size505.8 MB 89.7 MB
Events in quadrant A5,241,430604,691
Events in quadrant B3,632,896686,246
Events in quadrant C5,272,308562,610
Events in quadrant D4,988,820548,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198002
B0152683
C0199332
D0193142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64094557.099391%
B64081602.496879%
C640871911.220350%
D64084827.521848%

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 7564 6410 457 457 6.04% 7.13%
B 7563 6409 64 64 0.85% 1.00%
C 7563 6409 536 536 7.09% 8.36%
D 7563 6409 412 412 5.45% 6.43%

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 12 80 1454711 8618.68 679 662 168.7
A 4 3 364962 2159.34 679 662 168.7
A 8 38 188593 1113.94 679 662 168.7
B 4 170 144700 982.94 692 670 146.5
B 10 254 143057 971.73 692 670 146.5
B 5 172 103649 702.79 692 670 146.5
C 15 231 1349833 7533.03 655 648 179.1
C 4 5 415982 2318.97 655 648 179.1
C 13 3 234756 1307.12 655 648 179.1
D 11 245 519877 2794.29 664 641 185.8
D 7 191 315059 1692.06 664 641 185.8
D 2 249 284099 1525.44 664 641 185.8

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