ASTROSAT CZTI

Data Quality Report

Orbit 18200

Creation date: 2024-06-27T17:46:38.358095
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_160T02_9000002710_18200cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18200cztM0_level2_quad_clean.evt
Size (bytes)571,622,40077,215,680
Size545.1 MB 73.6 MB
Events in quadrant A3,629,569465,984
Events in quadrant B3,715,722469,926
Events in quadrant C4,153,609450,852
Events in quadrant D5,323,260448,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155302
B0158642
C0170722
D0208772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7212841.164725%
B72131702.356856%
C72134205.822820%
D72133244.491890%

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 7772 7214 7 7 0.09% 0.10%
B 7773 7215 19 19 0.24% 0.26%
C 7773 7215 105 105 1.35% 1.46%
D 7773 7215 127 127 1.63% 1.76%

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 15 174 179973 981.1 896 875 182.5
A 0 226 8019 39.13 896 875 182.5
A 3 137 6881 32.9 896 875 182.5
B 7 220 98337 568.99 889 864 171.3
B 0 197 48869 280.23 889 864 171.3
B 0 189 39256 224.11 889 864 171.3
C 4 254 694401 3494.59 843 846 198.5
C 14 238 130581 653.69 843 846 198.5
C 3 233 39550 195.02 843 846 198.5
D 5 222 988879 4634.56 860 832 213.2
D 7 238 919884 4310.93 860 832 213.2
D 1 52 63147 292.3 860 832 213.2

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