ASTROSAT CZTI

Data Quality Report

Orbit 44676

Creation date: 2024-06-27T23:05:11.532868
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/AS1A13_072T01_9000006008_44676cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44676cztM0_level2_quad_clean.evt
Size (bytes)466,600,320104,659,200
Size445.0 MB 99.8 MB
Events in quadrant A4,731,060717,042
Events in quadrant B3,172,745752,339
Events in quadrant C2,856,723723,013
Events in quadrant D6,028,798542,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01931815
B0137382
C0129302
D0224272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62101352.173913%
B6212861.384417%
C6212220.354153%
D6212110317.755956%

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 7447 6212 20 20 0.27% 0.32%
B 7447 6213 29 29 0.39% 0.47%
C 7447 6213 7 7 0.09% 0.11%
D 7447 6213 908 908 12.19% 14.61%

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 10 83 1927115 13157.61 707 694 146.4
A 13 248 49232 331.52 707 694 146.4
A 10 248 14219 92.38 707 694 146.4
B 0 189 125007 908.87 711 689 136.8
B 4 171 119910 871.61 711 689 136.8
B 0 183 39861 286.38 711 689 136.8
C 2 14 58934 356.75 704 708 163.2
C 14 254 37406 224.85 704 708 163.2
C 3 233 10514 60.08 704 708 163.2
D 1 52 2640408 16839.15 619 598 156.8
D 2 249 347882 2215.3 619 598 156.8
D 13 249 222795 1417.38 619 598 156.8

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