ASTROSAT CZTI

Data Quality Report

Orbit 18452

Creation date: 2024-06-27T17:49:59.536471
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/AS1A05_199T01_9000002732_18452cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18452cztM0_level2_quad_clean.evt
Size (bytes)534,346,560105,684,480
Size509.6 MB 100.8 MB
Events in quadrant A3,431,830684,380
Events in quadrant B5,324,453684,061
Events in quadrant C3,486,416684,713
Events in quadrant D3,470,459665,613

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148352
B0203252
C0149923
D0150892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6913711.027050%
B69136599.532764%
C69121161.678241%
D6912440.636574%

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 9143 6913 5 5 0.05% 0.07%
B 9142 6912 403 403 4.41% 5.83%
C 9142 6912 0 0 0.00% 0.00%
D 9142 6912 1 1 0.01% 0.01%

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 55403 310.57 878 860 175.6
A 0 226 7528 37.97 878 860 175.6
A 3 137 6742 33.49 878 860 175.6
B 10 245 1938983 11969.58 857 837 161.9
B 0 244 26813 160.42 857 837 161.9
B 12 111 19420 114.76 857 837 161.9
C 14 238 133906 667.31 858 862 199.4
C 3 233 7635 33.97 858 862 199.4
C 13 61 5902 25.28 858 862 199.4
D 12 110 92246 431.9 865 839 211.6
D 13 168 78511 367.0 865 839 211.6
D 2 234 31331 144.08 865 839 211.6

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