ASTROSAT CZTI

Data Quality Report

Orbit 42784

Creation date: 2024-06-27T22:44:12.873962
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/AS1A05_013T01_9000005822_42784cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42784cztM0_level2_quad_clean.evt
Size (bytes)527,947,20094,656,960
Size503.5 MB 90.3 MB
Events in quadrant A3,528,507665,648
Events in quadrant B5,032,390564,750
Events in quadrant C3,307,947643,274
Events in quadrant D7,212,800576,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138552
B0190972
C0134942
D0255272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5948611.025555%
B594998216.506976%
C59491762.958480%
D594965010.926206%

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 7261 5949 47 47 0.65% 0.79%
B 7262 5950 906 906 12.48% 15.23%
C 7262 5950 179 179 2.46% 3.01%
D 7262 5950 869 869 11.97% 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 637500 4694.07 664 649 135.7
A 13 248 290767 2138.39 664 649 135.7
A 13 6 16924 119.96 664 649 135.7
B 0 229 2556283 22197.71 587 570 115.1
B 10 247 131398 1136.31 587 570 115.1
B 12 111 14468 120.71 587 570 115.1
C 14 254 541927 3585.2 641 643 151.0
C 15 214 239383 1581.3 641 643 151.0
C 5 250 16525 105.19 641 643 151.0
D 13 169 4283855 27013.23 638 621 158.6
D 12 233 251103 1579.72 638 621 158.6
D 5 171 109188 684.7 638 621 158.6

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