ASTROSAT CZTI

Data Quality Report

Orbit 20190717_A05_069T02_9000003038_level2

Creation date: 2025-12-02T11:54:58.669932
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/AS1A05_069T02_9000003038cztM0_level2.fits modeM0/AS1A05_069T02_9000003038cztM0_level2_quad_clean.evt
Size (bytes)400,547,520368,432,640
Size382.0 MB 351.4 MB
Events in quadrant A2,451,3422,191,256
Events in quadrant B2,367,3442,213,549
Events in quadrant C2,405,8762,058,751
Events in quadrant D2,108,3681,895,964

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0863120
B0850410
C0846290
D0919620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08300
B08300
C08300
D08300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A407494561.119046%
B407494731.160765%
C407495281.295737%
D407496721.649120%

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 46509 40749 0 0 0.00% 0.00%
B 46509 40749 0 0 0.00% 0.00%
C 46509 40749 0 0 0.00% 0.00%
D 46509 40741 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 2422 11.43 638 597 159.7
A 7 110 1922 8.3 638 597 159.7
A 9 19 1887 8.08 638 597 159.7
B 2 9 1917 10.59 624 594 124.9
B 2 8 1655 8.49 624 594 124.9
B 5 128 1547 7.63 624 594 124.9
C 1 80 1796 7.43 634 591 162.3
C 1 81 1780 7.33 634 591 162.3
C 12 241 1721 6.96 634 591 162.3
D 3 14 1486 5.93 600 547 158.4
D 10 189 1468 5.81 600 547 158.4
D 7 5 1463 5.78 600 547 158.4

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