ASTROSAT CZTI

Data Quality Report

Orbit 41579

Creation date: 2024-06-27T22:30:20.831196
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/AS1A12_035T02_9000005676_41579cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41579cztM0_level2_quad_clean.evt
Size (bytes)333,725,76089,971,200
Size318.3 MB 85.8 MB
Events in quadrant A2,909,512611,527
Events in quadrant B2,446,102627,312
Events in quadrant C3,575,710564,655
Events in quadrant D3,000,909543,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119362
B0110062
C0140702
D0128514

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5402130.240652%
B540360.111049%
C54033346.181751%
D54021282.369493%

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 9287 5404 4 4 0.04% 0.07%
B 9288 5405 1 1 0.01% 0.02%
C 9288 5405 312 312 3.36% 5.77%
D 9287 5404 108 108 1.16% 2.00%

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 515421 4267.58 596 585 120.6
A 15 223 84278 693.75 596 585 120.6
A 13 254 9472 73.67 596 585 120.6
B 0 245 51452 441.83 592 575 115.1
B 5 255 19575 165.0 592 575 115.1
B 0 155 17989 151.23 592 575 115.1
C 14 254 558268 4188.75 567 570 133.1
C 0 10 557221 4180.89 567 570 133.1
C 15 214 233420 1748.89 567 570 133.1
D 13 249 536269 3758.98 582 566 142.5
D 12 6 93979 655.47 582 566 142.5
D 13 112 51858 359.91 582 566 142.5

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