ASTROSAT CZTI

Data Quality Report

Orbit 21095

Creation date: 2024-06-27T18:23:29.579665
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_163T01_9000003118_21095cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21095cztM0_level2_quad_clean.evt
Size (bytes)559,327,68084,936,960
Size533.4 MB 81.0 MB
Events in quadrant A3,674,465522,598
Events in quadrant B3,985,370527,146
Events in quadrant C3,704,788504,280
Events in quadrant D5,049,726480,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159332
B0166232
C0159432
D0200032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77342603.361779%
B77343063.956555%
C77342813.633307%
D77354135.339367%

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 8209 7736 0 0 0.00% 0.00%
B 8209 7736 4 4 0.05% 0.05%
C 8209 7736 0 0 0.00% 0.00%
D 8210 7736 193 193 2.35% 2.49%

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 13 254 10053 47.32 948 926 192.9
A 15 192 9012 41.92 948 926 192.9
A 3 137 8401 38.75 948 926 192.9
B 7 220 117208 636.28 946 921 182.8
B 0 219 101758 551.75 946 921 182.8
B 12 111 22706 119.2 946 921 182.8
C 14 238 142157 656.94 913 916 215.0
C 13 61 6353 25.29 913 916 215.0
C 8 128 2773 8.64 913 916 215.0
D 1 239 591739 2622.26 917 889 225.3
D 1 52 391928 1735.48 917 889 225.3
D 1 20 391379 1733.04 917 889 225.3

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