ASTROSAT CZTI

Data Quality Report

Orbit 18387

Creation date: 2024-06-27T17:49:10.790851
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/AS1A06_006T01_9000002724_18387cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18387cztM0_level2_quad_clean.evt
Size (bytes)604,278,72094,717,440
Size576.3 MB 90.3 MB
Events in quadrant A3,765,338592,459
Events in quadrant B4,778,554590,957
Events in quadrant C4,147,590578,337
Events in quadrant D5,083,405567,466

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162510
B0191200
C0172390
D0200580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77562813.623002%
B77564265.492522%
C77564105.286230%
D77563925.054152%

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 8341 7760 0 0 0.00% 0.00%
B 8341 7760 125 125 1.50% 1.61%
C 8341 7760 73 73 0.88% 0.94%
D 8341 7760 155 155 1.86% 2.00%

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 32307 157.78 968 945 198.8
A 15 174 14365 67.52 968 945 198.8
A 0 226 8536 38.19 968 945 198.8
B 10 245 242808 1294.61 962 937 186.8
B 12 18 237816 1267.89 962 937 186.8
B 3 64 211894 1129.15 962 937 186.8
C 0 207 406458 1880.17 921 924 215.7
C 14 238 142559 656.66 921 924 215.7
C 13 61 6505 25.87 921 924 215.7
D 1 52 1379828 5970.18 941 911 231.0
D 7 238 43057 182.48 941 911 231.0
D 2 234 37316 157.62 941 911 231.0

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