ASTROSAT CZTI

Data Quality Report

Orbit 20230326_A12_097T02_9000005542_level2

Creation date: 2023-03-27T15:53:32.152752
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_097T02_9000005542cztM0_level2.fits modeM0/AS1A12_097T02_9000005542cztM0_level2_quad_clean.evt
Size (bytes)338,201,280316,823,040
Size322.5 MB 302.1 MB
Events in quadrant A2,049,4681,885,759
Events in quadrant B1,946,2921,874,090
Events in quadrant C2,010,1781,820,894
Events in quadrant D1,547,6061,326,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860570
B0940130
C0836630
D01021540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08000
B08000
C08000
D08000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01410
C01410
D01410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A391111170.299149%
B391116141.569891%
C391113130.800286%
D39111704118.002608%

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 53205 39111 0 0 0.00% 0.00%
B 53205 39106 0 0 0.00% 0.00%
C 53205 39099 0 0 0.00% 0.00%
D 53205 39007 0 0 0.00% 0.00%

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 0 29 1682 8.66 535 500 136.5
A 7 110 1643 8.37 535 500 136.5
A 14 95 1640 8.35 535 500 136.5
B 2 9 1680 11.65 515 491 102.0
B 3 80 1497 9.86 515 491 102.0
B 3 17 1396 8.87 515 491 102.0
C 1 81 1724 8.9 530 495 138.1
C 1 80 1639 8.29 530 495 138.1
C 3 202 1632 8.24 530 495 138.1
D 7 3 1194 5.88 450 407 133.7
D 10 189 1188 5.84 450 407 133.7
D 6 62 1181 5.78 450 407 133.7

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