ASTROSAT CZTI

Data Quality Report

Orbit 31241

Creation date: 2024-06-27T20:25:29.843745
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_073T02_9000004522_31241cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31241cztM0_level2_quad_clean.evt
Size (bytes)706,201,920107,573,760
Size673.5 MB 102.6 MB
Events in quadrant A3,601,744710,923
Events in quadrant B6,034,823697,810
Events in quadrant C4,064,152674,533
Events in quadrant D7,183,841655,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154622
B0232422
C0167782
D0269193

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7449540.724930%
B74491922.577527%
C74491842.470130%
D74482623.517723%

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 7869 7450 0 0 0.00% 0.00%
B 7869 7450 25 25 0.32% 0.34%
C 7869 7450 22 22 0.28% 0.30%
D 7868 7449 100 100 1.27% 1.34%

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 15192 75.89 932 915 188.1
A 3 137 9495 45.61 932 915 188.1
A 0 226 8027 37.8 932 915 188.1
B 6 159 2124406 11978.19 912 891 177.3
B 0 190 142916 801.13 912 891 177.3
B 4 80 87304 487.43 912 891 177.3
C 0 10 270809 1312.96 875 880 205.6
C 14 238 147017 710.83 875 880 205.6
C 3 233 110766 534.5 875 880 205.6
D 8 195 3569676 15768.53 880 861 226.3
D 2 250 120718 529.58 880 861 226.3
D 12 79 77274 337.62 880 861 226.3

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