ASTROSAT CZTI

Data Quality Report

Orbit 18124

Creation date: 2024-06-27T17:45:26.894308
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_097T01_9000002690_18124cztM0_level2.evt modeM0/AS1A05_097T01_9000002690_18124cztM0_level2_quad_clean.evt
Size (bytes)519,166,08070,439,040
Size495.1 MB 67.2 MB
Events in quadrant A3,567,570411,877
Events in quadrant B3,576,942423,173
Events in quadrant C3,504,736412,534
Events in quadrant D4,613,278412,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146972
B0146376
C0143332
D0182872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67811001.474709%
B67811071.577938%
C67811161.710662%
D67811772.610234%

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 7771 6782 4 4 0.05% 0.06%
B 7771 6782 3 3 0.04% 0.04%
C 7771 6782 0 0 0.00% 0.00%
D 7771 6782 69 69 0.89% 1.02%

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 4 2 94288 519.34 892 874 179.9
A 15 174 45597 248.64 892 874 179.9
A 0 226 7748 38.22 892 874 179.9
B 0 197 35457 202.12 887 864 171.1
B 7 220 30391 172.52 887 864 171.1
B 0 189 21294 119.37 887 864 171.1
C 14 238 133736 670.16 855 865 198.3
C 3 233 22142 107.31 855 865 198.3
C 5 218 7819 35.07 855 865 198.3
D 7 238 835024 3939.08 870 849 211.8
D 11 176 199726 939.12 870 849 211.8
D 1 52 125110 586.78 870 849 211.8

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