ASTROSAT CZTI

Data Quality Report

Orbit 23799

Creation date: 2024-06-27T18:58:51.831459
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/AS1A07_113T01_9000003526_23799cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23799cztM0_level2_quad_clean.evt
Size (bytes)814,034,880105,076,800
Size776.3 MB 100.2 MB
Events in quadrant A3,368,773717,219
Events in quadrant B9,277,814589,424
Events in quadrant C3,561,524721,057
Events in quadrant D7,969,199662,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145722
B0323982
C0150292
D0287242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7046340.482543%
B7046260636.985524%
C7046991.405053%
D704675010.644337%

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 7881 7047 0 0 0.00% 0.00%
B 7881 7047 1826 1826 23.17% 25.91%
C 7881 7046 0 0 0.00% 0.00%
D 7881 7046 701 701 8.89% 9.95%

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 13 254 11826 62.47 873 856 175.6
A 3 137 7704 39.0 873 856 175.6
A 0 226 7540 38.06 873 856 175.6
B 3 64 6326114 44111.93 750 731 143.4
B 12 111 16927 112.95 750 731 143.4
B 11 111 14802 98.13 750 731 143.4
C 14 238 136642 679.61 853 859 199.8
C 7 247 97785 485.13 853 859 199.8
C 13 61 5776 24.61 853 859 199.8
D 8 195 3241339 16159.64 825 802 200.5
D 13 174 930025 4633.77 825 802 200.5
D 1 52 648341 3229.09 825 802 200.5

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