ASTROSAT CZTI

Data Quality Report

Orbit 20240223_A13_038T04_9000006090_level2

Creation date: 2024-02-27T14:21:00.138864
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/AS1A13_038T04_9000006090cztM0_level2.fits modeM0/AS1A13_038T04_9000006090cztM0_level2_quad_clean.evt
Size (bytes)389,197,440399,268,800
Size371.2 MB 380.8 MB
Events in quadrant A2,268,6162,328,691
Events in quadrant B2,220,3902,381,862
Events in quadrant C2,315,1482,308,253
Events in quadrant D1,957,4402,049,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01371550
B01004970
C0925990
D01122430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08930
B08940
C08960
D08980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4392914033.193790%
B4404516413.725735%
C440786451.463315%
D4407219094.331548%

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 56117 44146 0 0 0.00% 0.00%
B 56117 44300 0 0 0.00% 0.00%
C 56117 44323 0 0 0.00% 0.00%
D 56117 44303 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 7 110 1849 8.32 592 548 156.3
A 0 29 1758 7.74 592 548 156.3
A 15 236 1737 7.61 592 548 156.3
B 2 9 2103 13.32 586 556 116.1
B 2 8 1692 9.78 586 556 116.1
B 3 17 1647 9.4 586 556 116.1
C 3 202 1779 7.68 612 568 157.7
C 3 203 1736 7.41 612 568 157.7
C 1 81 1709 7.24 612 568 157.7
D 3 14 1469 6.1 561 509 157.4
D 6 67 1409 5.72 561 509 157.4
D 4 16 1400 5.66 561 509 157.4

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