ASTROSAT CZTI

Data Quality Report

Orbit 30253

Creation date: 2024-06-27T20:12:43.849457
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_007T01_9000004350_30253cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30253cztM0_level2_quad_clean.evt
Size (bytes)610,191,360113,549,760
Size581.9 MB 108.3 MB
Events in quadrant A3,580,529747,696
Events in quadrant B5,427,492764,638
Events in quadrant C3,654,856747,350
Events in quadrant D5,370,779719,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145392
B0204732
C0147812
D0202432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6602841.272342%
B66011702.575367%
C66011432.166338%
D66014536.862597%

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 7952 6603 15 15 0.19% 0.23%
B 7951 6602 16 16 0.20% 0.24%
C 7951 6602 0 0 0.00% 0.00%
D 7951 6602 338 338 4.25% 5.12%

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 0 13 87073 491.25 897 882 175.5
A 8 192 22260 121.84 897 882 175.5
A 13 254 12110 63.99 897 882 175.5
B 6 159 1835339 10938.87 893 873 167.7
B 4 80 49340 289.01 893 873 167.7
B 6 36 26025 149.98 893 873 167.7
C 14 238 153147 742.32 879 888 205.1
C 3 233 46110 220.48 879 888 205.1
C 14 254 17096 79.02 879 888 205.1
D 1 52 1746795 8707.46 860 846 200.5
D 8 195 219753 1091.74 860 846 200.5
D 5 222 62570 307.83 860 846 200.5

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