ASTROSAT CZTI

Data Quality Report

Orbit 40027

Creation date: 2024-06-27T22:11:26.446849
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_054T03_9000005516_40027cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40027cztM0_level2_quad_clean.evt
Size (bytes)300,804,48092,525,760
Size286.9 MB 88.2 MB
Events in quadrant A2,901,932623,477
Events in quadrant B2,356,764650,764
Events in quadrant C2,636,201614,576
Events in quadrant D2,830,345545,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119133
B0106212
C0110312
D0121472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5250160.304762%
B525050.095238%
C5250210.400000%
D52501583.009524%

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 7371 5251 6 6 0.08% 0.11%
B 7371 5251 1 1 0.01% 0.02%
C 7371 5251 16 16 0.22% 0.30%
D 7371 5251 114 114 1.55% 2.17%

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 450312 3762.77 586 576 119.5
A 6 10 86377 717.86 586 576 119.5
A 12 189 47553 393.04 586 576 119.5
B 4 171 25410 220.74 588 572 112.5
B 12 111 13632 116.06 588 572 112.5
B 11 111 12406 105.17 588 572 112.5
C 15 214 234295 1762.61 571 575 132.6
C 14 254 135227 1015.48 571 575 132.6
C 0 10 17101 124.63 571 575 132.6
D 2 250 366113 2687.21 560 545 136.0
D 2 31 108777 795.59 560 545 136.0
D 1 47 80719 589.34 560 545 136.0

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