ASTROSAT CZTI

Data Quality Report

Orbit 16809

Creation date: 2024-06-27T17:28:06.346884
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_140T01_9000002496_16809cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16809cztM0_level2_quad_clean.evt
Size (bytes)626,958,72084,758,400
Size597.9 MB 80.8 MB
Events in quadrant A4,395,012523,963
Events in quadrant B4,473,153529,819
Events in quadrant C3,991,022509,136
Events in quadrant D5,614,473475,910

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179552
B0182142
C0166912
D0216392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75822833.732524%
B75832963.903468%
C75831702.241857%
D75835387.094817%

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 8438 7585 58 58 0.69% 0.76%
B 8439 7586 57 57 0.68% 0.75%
C 8439 7586 0 0 0.00% 0.00%
D 8439 7585 363 363 4.30% 4.79%

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 753147 3942.4 934 913 190.8
A 9 143 51823 266.82 934 913 190.8
A 0 226 8411 39.3 934 913 190.8
B 15 35 229818 1261.41 929 903 181.5
B 7 220 185980 1019.84 929 903 181.5
B 0 229 175091 959.84 929 903 181.5
C 3 233 364331 1739.73 893 898 208.9
C 14 238 138378 658.11 893 898 208.9
C 13 61 6294 25.83 893 898 208.9
D 1 52 1699873 7839.64 882 854 216.7
D 12 218 193030 886.74 882 854 216.7
D 13 248 185965 854.14 882 854 216.7

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