ASTROSAT CZTI

Data Quality Report

Orbit 30460

Creation date: 2024-06-27T20:15:33.111858
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/AS1A10_121T02_9000004378_30460cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30460cztM0_level2_quad_clean.evt
Size (bytes)637,934,400109,825,920
Size608.4 MB 104.7 MB
Events in quadrant A3,847,183708,391
Events in quadrant B6,126,670707,882
Events in quadrant C4,013,059694,521
Events in quadrant D4,810,012677,698

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166592
B0238362
C0168902
D0197132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7728851.099896%
B77292593.351016%
C77292443.156941%
D77293244.192004%

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 8478 7730 4 4 0.05% 0.05%
B 8479 7731 2 2 0.02% 0.03%
C 8479 7731 1 1 0.01% 0.01%
D 8479 7731 150 150 1.77% 1.94%

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 4 2 61439 312.82 960 939 193.4
A 0 13 52823 268.27 960 939 193.4
A 8 192 22121 109.52 960 939 193.4
B 6 159 2258178 12216.75 953 927 184.8
B 0 229 43516 230.5 953 927 184.8
B 0 190 36436 192.18 953 927 184.8
C 14 238 156574 708.89 925 930 219.6
C 10 22 112646 508.82 925 930 219.6
C 3 233 70039 314.76 925 930 219.6
D 13 104 854793 3570.82 916 897 239.1
D 8 195 163507 680.0 916 897 239.1
D 1 52 112956 468.61 916 897 239.1

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