ASTROSAT CZTI

Data Quality Report

Orbit 20230520_A12_025T16_9000005650_level2

Creation date: 2023-05-22T10:55:48.935241
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_025T16_9000005650cztM0_level2.fits modeM0/AS1A12_025T16_9000005650cztM0_level2_quad_clean.evt
Size (bytes)112,677,120121,688,640
Size107.5 MB 116.1 MB
Events in quadrant A671,086742,529
Events in quadrant B639,726737,083
Events in quadrant C649,584679,413
Events in quadrant D563,822637,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273890
B0286390
C0279320
D0334540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12855230.178919%
B128551761.369117%
C128553072.388176%
D128553052.372618%

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 16822 12855 0 0 0.00% 0.00%
B 16822 12855 0 0 0.00% 0.00%
C 16822 12838 0 0 0.00% 0.00%
D 16822 12852 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 29 551 8.27 174 162 47.0
A 15 236 526 7.74 174 162 47.0
A 7 110 526 7.74 174 162 47.0
B 2 9 570 11.38 169 160 36.0
B 3 17 463 8.41 169 160 36.0
B 3 80 459 8.3 169 160 36.0
C 3 202 540 8.24 171 160 46.1
C 1 80 529 8.0 171 160 46.1
C 1 81 509 7.57 171 160 46.1
D 7 3 426 6.1 161 146 45.9
D 15 46 423 6.04 161 146 45.9
D 6 38 416 5.89 161 146 45.9

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