ASTROSAT CZTI

Data Quality Report

Orbit 14918

Creation date: 2024-06-27T17:01:19.647526
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/AS1A04_099T01_9000002204_14918cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14918cztM0_level2_quad_clean.evt
Size (bytes)520,902,72093,795,840
Size496.8 MB 89.5 MB
Events in quadrant A3,182,340608,974
Events in quadrant B5,160,756599,293
Events in quadrant C3,575,494587,350
Events in quadrant D3,400,465576,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138103
B0197702
C0148612
D0149632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727610.906794%
B672774811.119370%
C6727911.352758%
D6727821.218968%

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 8543 6730 0 0 0.00% 0.00%
B 8543 6730 499 499 5.84% 7.41%
C 8543 6730 24 24 0.28% 0.36%
D 8543 6730 19 19 0.22% 0.28%

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 12 189 11227 62.72 822 805 166.1
A 3 1 7764 41.88 822 805 166.1
A 0 226 7261 38.85 822 805 166.1
B 10 16 2036257 13189.4 798 777 154.3
B 12 111 18964 117.85 798 777 154.3
B 11 111 16440 101.49 798 777 154.3
C 9 236 323338 1749.22 791 796 184.4
C 3 233 169418 914.47 791 796 184.4
C 13 61 5550 25.78 791 796 184.4
D 7 223 333735 1764.01 790 770 188.8
D 13 104 42346 220.26 790 770 188.8
D 2 234 21611 110.41 790 770 188.8

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