ASTROSAT CZTI

Data Quality Report

Orbit 18840

Creation date: 2024-06-27T17:55:31.349560
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_194T13_9000002814_18840cztM0_level2.evt modeM0/AS1A05_194T13_9000002814_18840cztM0_level2_quad_clean.evt
Size (bytes)51,436,8007,620,480
Size49.1 MB 7.3 MB
Events in quadrant A309,81443,775
Events in quadrant B576,16944,075
Events in quadrant C312,43143,051
Events in quadrant D308,53642,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014080
B021550
C013990
D014420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69900.000000%
B699182.575107%
C69920.286123%
D69910.143062%

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 699 699 1 1 0.14% 0.14%
B 699 699 11 11 1.57% 1.57%
C 699 699 0 0 0.00% 0.00%
D 699 699 1 1 0.14% 0.14%

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 2781 149.14 79 77 18.1
A 11 29 1543 80.86 79 77 18.1
A 13 254 1107 56.81 79 77 18.1
B 10 245 260083 14955.64 79 77 17.4
B 0 229 3168 177.8 79 77 17.4
B 12 111 1948 107.62 79 77 17.4
C 14 238 11207 559.29 76 77 19.9
C 3 233 1645 78.79 76 77 19.9
C 13 61 553 23.92 76 77 19.9
D 1 52 14255 677.06 76 74 20.9
D 2 120 3733 174.7 76 74 20.9
D 2 234 2739 127.24 76 74 20.9

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