ASTROSAT CZTI

Data Quality Report

Orbit 47849

Creation date: 2024-08-03T05:29:39.349997
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/AS1T05_216T01_9000006356_47849cztM0_level2.fits modeM0/AS1T05_216T01_9000006356_47849cztM0_level2_quad_clean.evt
Size (bytes)647,084,16077,633,280
Size617.1 MB 74.0 MB
Events in quadrant A6,003,290592,938
Events in quadrant B2,833,712626,220
Events in quadrant C2,498,954606,809
Events in quadrant D12,170,924123,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215502
B0125672
C0117942
D0400932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57392364.112215%
B5739480.836383%
C5739170.296219%
D5739454879.247256%

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 6794 5740 124 124 1.83% 2.16%
B 6794 5739 22 22 0.32% 0.38%
C 6794 5740 11 11 0.16% 0.19%
D 6793 5738 4397 4397 64.73% 76.63%

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 3571281 27368.73 619 604 130.5
A 14 248 21430 159.63 619 604 130.5
A 15 235 8304 59.02 619 604 130.5
B 0 200 120244 967.0 622 601 123.7
B 0 186 70551 565.36 622 601 123.7
B 5 255 51459 411.05 622 601 123.7
C 12 2 53210 360.3 616 618 146.0
C 14 254 25083 167.61 616 618 146.0
C 3 233 13676 89.46 616 618 146.0
D 2 165 9071305 98991.41 349 337 91.6
D 2 37 1094479 11940.36 349 337 91.6
D 12 2 320774 3496.93 349 337 91.6

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