ASTROSAT CZTI

Data Quality Report

Orbit 17270

Creation date: 2024-06-27T17:34:20.359763
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/AS1T03_059T01_9000002554_17270cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17270cztM0_level2_quad_clean.evt
Size (bytes)566,683,20092,520,000
Size540.4 MB 88.2 MB
Events in quadrant A3,399,873608,779
Events in quadrant B3,212,960618,304
Events in quadrant C3,182,188580,056
Events in quadrant D6,907,913522,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147642
B0139972
C0138812
D0253032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6769741.093219%
B6769420.620476%
C6769440.650022%
D676999914.758458%

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 7764 6770 19 19 0.24% 0.28%
B 7764 6770 1 1 0.01% 0.01%
C 7764 6770 0 0 0.00% 0.00%
D 7764 6770 914 914 11.77% 13.50%

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 14 235 277345 1674.48 811 794 165.2
A 0 226 7108 38.23 811 794 165.2
A 3 137 6123 32.27 811 794 165.2
B 12 111 19039 116.06 817 795 157.2
B 11 111 16306 98.67 817 795 157.2
B 14 111 14051 84.33 817 795 157.2
C 14 238 119091 645.9 777 781 183.2
C 3 233 35507 189.58 777 781 183.2
C 13 61 5596 26.29 777 781 183.2
D 11 176 3539165 19665.16 742 721 179.9
D 13 189 250651 1389.0 742 721 179.9
D 10 70 157855 873.28 742 721 179.9

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