ASTROSAT CZTI

Data Quality Report

Orbit 23541

Creation date: 2024-06-27T18:55:56.343082
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/AS1A07_011T01_9000003482_23541cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23541cztM0_level2_quad_clean.evt
Size (bytes)587,355,84090,564,480
Size560.1 MB 86.4 MB
Events in quadrant A3,592,658562,943
Events in quadrant B4,093,784566,022
Events in quadrant C3,630,982546,154
Events in quadrant D5,953,745537,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156782
B0169402
C0156912
D0230024

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76221121.469431%
B76221852.427184%
C76221762.309105%
D76217009.185146%

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 7907 7622 0 0 0.00% 0.00%
B 7907 7622 33 33 0.42% 0.43%
C 7907 7622 1 1 0.01% 0.01%
D 7906 7622 573 573 7.25% 7.52%

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 13738 68.81 930 909 186.4
A 3 137 8340 39.86 930 909 186.4
A 0 226 8066 38.39 930 909 186.4
B 0 189 182437 1038.04 918 894 174.9
B 0 229 106385 603.18 918 894 174.9
B 3 64 97134 550.29 918 894 174.9
C 14 238 140288 680.77 881 884 204.8
C 10 9 16713 77.3 881 884 204.8
C 9 232 10241 45.69 881 884 204.8
D 12 233 1218998 5650.89 875 847 215.6
D 7 38 814643 3775.12 875 847 215.6
D 1 52 513088 2376.24 875 847 215.6

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