ASTROSAT CZTI

Data Quality Report

Orbit 20220618_A11_097T17_9000005194_level2

Creation date: 2026-01-03T09:19:52.767515
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/AS1A11_097T17_9000005194cztM0_level2.fits modeM0/AS1A11_097T17_9000005194cztM0_level2_quad_clean.evt
Size (bytes)547,879,680518,690,880
Size522.5 MB 494.7 MB
Events in quadrant A3,358,4743,105,218
Events in quadrant B3,151,6962,992,647
Events in quadrant C3,288,1322,986,376
Events in quadrant D2,794,8102,625,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011960
B011960
C011960
D011960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01218680
B01457840
C01307040
D01647500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02210
C02210
D02210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582661180.202519%
B5826621243.645351%
C582648911.529246%
D5826629175.006350%

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 80549 58262 0 0 0.00% 0.00%
B 80549 58250 0 0 0.00% 0.00%
C 80550 58245 0 0 0.00% 0.00%
D 80548 58191 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 2754 9.03 876 825 213.6
A 9 19 2715 8.85 876 825 213.6
A 0 29 2702 8.79 876 825 213.6
B 2 9 2757 11.91 833 797 164.6
B 3 80 2419 9.85 833 797 164.6
B 2 8 2237 8.75 833 797 164.6
C 1 81 2717 8.47 867 813 224.7
C 1 80 2607 7.98 867 813 224.7
C 3 202 2554 7.75 867 813 224.7
D 10 189 2096 6.45 799 733 211.3
D 10 113 2092 6.43 799 733 211.3
D 4 160 2046 6.21 799 733 211.3

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