ASTROSAT CZTI

Data Quality Report

Orbit 27013

Creation date: 2024-06-27T19:35:34.420303
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/AS1A09_145T01_9000003900_27013cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_27013cztM0_level2_quad_clean.evt
Size (bytes)611,890,560104,284,800
Size583.5 MB 99.5 MB
Events in quadrant A6,778,748631,380
Events in quadrant B3,570,518711,578
Events in quadrant C3,479,789681,233
Events in quadrant D4,229,214647,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246850
B0148460
C0146150
D0172590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6981112816.158144%
B69821281.833286%
C69821251.790318%
D69812723.896290%

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 7676 6982 988 988 12.87% 14.15%
B 7677 6983 19 19 0.25% 0.27%
C 7677 6983 0 0 0.00% 0.00%
D 7676 6982 235 235 3.06% 3.37%

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 6 16 2348934 13759.85 839 825 170.6
A 14 235 1182159 6922.58 839 825 170.6
A 8 192 14427 79.71 839 825 170.6
B 0 189 65211 377.39 883 864 170.5
B 0 219 21548 121.31 883 864 170.5
B 10 245 20307 114.03 883 864 170.5
C 14 238 135498 667.35 850 858 201.8
C 5 218 12719 58.79 850 858 201.8
C 14 225 6598 28.45 850 858 201.8
D 1 52 770716 3803.91 842 823 202.4
D 11 176 215699 1061.67 842 823 202.4
D 2 250 43121 208.99 842 823 202.4

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