ASTROSAT CZTI

Data Quality Report

Orbit 41602

Creation date: 2024-06-27T22:30:35.179684
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_9000005680_41602cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41602cztM0_level2_quad_clean.evt
Size (bytes)359,830,08090,527,040
Size343.2 MB 86.3 MB
Events in quadrant A2,975,528619,684
Events in quadrant B2,725,828628,802
Events in quadrant C3,523,514581,482
Events in quadrant D3,671,371530,117

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120082
B0115992
C0139502
D0146663

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5439180.330943%
B5439220.404486%
C54392234.100018%
D54383626.656859%

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 7232 5440 4 4 0.06% 0.07%
B 7232 5440 8 8 0.11% 0.15%
C 7232 5440 218 218 3.01% 4.01%
D 7231 5439 267 267 3.69% 4.91%

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 575259 4551.05 614 600 126.3
A 13 254 8190 60.11 614 600 126.3
A 7 3 8066 59.13 614 600 126.3
B 0 245 129122 1100.7 607 591 116.8
B 0 186 118690 1011.37 607 591 116.8
B 15 85 26256 219.79 607 591 116.8
C 0 15 514735 3814.84 581 586 134.8
C 0 10 465998 3453.23 581 586 134.8
C 15 214 235473 1742.8 581 586 134.8
D 13 249 983848 6824.18 581 562 144.1
D 1 47 172912 1196.14 581 562 144.1
D 12 218 82372 567.78 581 562 144.1

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