ASTROSAT CZTI

Data Quality Report

Orbit 38484

Creation date: 2024-06-27T21:53:22.800410
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_018T01_9000005386_38484cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38484cztM0_level2_quad_clean.evt
Size (bytes)773,985,600151,830,720
Size738.1 MB 144.8 MB
Events in quadrant A6,950,2481,005,976
Events in quadrant B6,048,3271,052,053
Events in quadrant C4,568,1581,056,477
Events in quadrant D10,324,931804,528

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269703
B0247702
C0198322
D0373812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97876766.907122%
B97874554.649024%
C978760.061306%
D9787189219.331767%

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 11099 9787 605 605 5.45% 6.18%
B 11100 9788 343 343 3.09% 3.50%
C 11100 9788 4 4 0.04% 0.04%
D 11100 9788 1837 1837 16.55% 18.77%

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 15 222 2196596 10336.65 1048 1025 212.4
A 10 83 584446 2746.72 1048 1025 212.4
A 12 189 66854 309.92 1048 1025 212.4
B 8 3 650911 3177.57 1065 1035 204.5
B 5 184 559231 2729.3 1065 1035 204.5
B 4 171 500724 2443.23 1065 1035 204.5
C 15 214 400487 1613.16 1061 1066 247.6
C 0 10 23056 88.81 1061 1066 247.6
C 13 61 7218 24.85 1061 1066 247.6
D 12 227 4998839 21055.5 966 939 237.4
D 13 249 314085 1319.24 966 939 237.4
D 10 118 275365 1156.12 966 939 237.4

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