ASTROSAT CZTI

Data Quality Report

Orbit 20250211_C09_003T01_9000006448_level2

Creation date: 2025-02-13T08:36:11.721759
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/AS1C09_003T01_9000006448cztM0_level2.fits modeM0/AS1C09_003T01_9000006448cztM0_level2_quad_clean.evt
Size (bytes)401,866,560574,315,200
Size383.2 MB 547.7 MB
Events in quadrant A2,423,5503,815,907
Events in quadrant B2,360,4864,172,372
Events in quadrant C2,129,6703,129,507
Events in quadrant D1,830,9322,860,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010120
B010120
C010140
D010140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01219170
B01195710
C01970940
D02037020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4974414402.894821%
B4973913102.633748%
C497371026320.634538%
D497531060521.315298%

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 56867 49793 0 0 0.00% 0.00%
B 56868 49777 0 0 0.00% 0.00%
C 56866 49444 0 0 0.00% 0.00%
D 56868 49376 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 9 255 2565 9.42 641 594 209.2
A 14 188 2559 9.39 641 594 209.2
A 14 204 2160 7.49 641 594 209.2
B 2 9 2637 13.84 625 594 147.6
B 2 8 2405 12.27 625 594 147.6
B 9 173 1880 8.71 625 594 147.6
C 15 127 1727 6.02 574 522 200.2
C 7 221 1706 5.92 574 522 200.2
C 15 177 1642 5.6 574 522 200.2
D 6 218 2445 11.2 525 469 176.5
D 3 30 1778 7.42 525 469 176.5
D 14 31 1616 6.5 525 469 176.5

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