ASTROSAT CZTI

Data Quality Report

Orbit 04984

Creation date: 2024-06-27T14:49:44.177410
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_115T01_9000000634_04984cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04984cztM0_level2_quad_clean.evt
Size (bytes)316,336,32053,720,640
Size301.7 MB 51.2 MB
Events in quadrant A2,109,944328,044
Events in quadrant B2,356,612330,439
Events in quadrant C2,049,396331,520
Events in quadrant D2,753,549316,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094232
B0100991
C093431
D0113291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4558771.689337%
B45581072.347521%
C4558440.965336%
D45581763.861343%

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 4727 4557 0 0 0.00% 0.00%
B 4727 4557 4 4 0.08% 0.09%
C 4727 4557 0 0 0.00% 0.00%
D 4727 4557 93 93 1.97% 2.04%

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 15227 131.62 539 525 111.7
A 8 15 7593 63.28 539 525 111.7
A 4 2 6521 53.68 539 525 111.7
B 0 219 218343 2068.6 542 529 105.3
B 15 54 16269 149.48 542 529 105.3
B 4 48 10872 98.23 542 529 105.3
C 13 61 4306 30.92 524 524 122.3
C 12 4 2543 16.5 524 524 122.3
C 9 54 1645 9.16 524 524 122.3
D 13 235 373609 2885.17 522 504 129.3
D 2 33 165906 1279.03 522 504 129.3
D 2 136 86150 662.29 522 504 129.3

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