ASTROSAT CZTI

Data Quality Report

Orbit 09218

Creation date: 2024-06-27T15:42:51.792878
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/AS1A02_178T01_9000001286_09218cztM0_level2.evt modeM0/AS1A02_178T01_9000001286_09218cztM0_level2_quad_clean.evt
Size (bytes)480,792,96086,304,960
Size458.5 MB 82.3 MB
Events in quadrant A4,599,627547,901
Events in quadrant B3,440,676565,518
Events in quadrant C2,860,609547,808
Events in quadrant D3,240,970521,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017958115
B01424093
C01269273
D01384059

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61732574.163292%
B6168741.199741%
C6172150.243033%
D6181981.585504%

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 7462 6208 173 173 2.32% 2.79%
B 7462 6206 24 24 0.32% 0.39%
C 7462 6208 0 0 0.00% 0.00%
D 7462 6207 94 94 1.26% 1.51%

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 8 5 1231691 8071.51 751 739 152.5
A 5 16 166588 1087.49 751 739 152.5
A 1 162 77611 504.06 751 739 152.5
B 8 234 193146 1307.77 768 752 147.1
B 0 245 50876 340.71 768 752 147.1
B 6 51 40115 267.56 768 752 147.1
C 13 61 5570 28.56 732 734 169.3
C 14 67 3294 15.12 732 734 169.3
C 3 233 2222 8.79 732 734 169.3
D 13 122 202212 1038.36 717 701 194.1
D 1 52 81891 418.36 717 701 194.1
D 9 64 69112 352.51 717 701 194.1

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