ASTROSAT CZTI

Data Quality Report

Orbit 05016

Creation date: 2024-06-27T14:50:13.478512
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_250T02_9000000638_05016cztM0_level2.evt modeM0/AS1G05_250T02_9000000638_05016cztM0_level2_quad_clean.evt
Size (bytes)316,209,60038,854,080
Size301.6 MB 37.1 MB
Events in quadrant A2,070,156222,249
Events in quadrant B2,011,357224,924
Events in quadrant C1,929,658226,357
Events in quadrant D3,284,077211,762

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087072
B086461
C086391
D0125981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4125230.557576%
B4125270.654545%
C4125280.678788%
D41252435.890909%

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 4880 4126 0 0 0.00% 0.00%
B 4880 4126 0 0 0.00% 0.00%
C 4880 4126 7 7 0.14% 0.17%
D 4880 4126 134 134 2.75% 3.25%

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 13 251 198787 1964.95 485 474 100.9
A 12 194 4928 44.13 485 474 100.9
A 0 226 4810 42.96 485 474 100.9
B 15 204 43053 440.25 491 478 96.7
B 4 80 25518 258.93 491 478 96.7
B 15 54 19808 199.88 491 478 96.7
C 12 4 70454 629.04 473 476 111.2
C 1 16 7519 63.31 473 476 111.2
C 13 61 3893 30.72 473 476 111.2
D 12 227 594107 5195.04 462 447 114.3
D 2 136 242901 2121.68 462 447 114.3
D 2 33 195295 1705.09 462 447 114.3

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