ASTROSAT CZTI

Data Quality Report

Orbit 03853

Creation date: 2024-06-27T14:34:24.331182
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/AS1G05_189T01_9000000492_03853cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03853cztM0_level2_quad_clean.evt
Size (bytes)486,089,28066,412,800
Size463.6 MB 63.3 MB
Events in quadrant A3,665,384383,882
Events in quadrant B3,511,807384,381
Events in quadrant C3,389,593375,262
Events in quadrant D3,665,807366,654

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156373
B0150552
C0151912
D0161612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71941782.474284%
B71941492.071170%
C71941301.807061%
D71941562.168474%

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 8694 7194 33 33 0.38% 0.46%
B 8694 7194 2 2 0.02% 0.03%
C 8694 7194 10 10 0.12% 0.14%
D 8694 7194 34 34 0.39% 0.47%

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 13 251 239143 1359.82 855 837 175.2
A 15 234 63561 357.91 855 837 175.2
A 8 15 48851 273.98 855 837 175.2
B 15 204 100164 589.98 863 845 168.3
B 14 167 50647 295.83 863 845 168.3
B 0 219 25585 146.96 863 845 168.3
C 2 53 152543 785.9 821 824 193.1
C 9 247 17205 84.85 821 824 193.1
C 13 61 6943 31.7 821 824 193.1
D 2 32 267130 1322.31 824 801 201.4
D 13 223 89077 438.29 824 801 201.4
D 12 16 45729 223.07 824 801 201.4

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
Veto Counter