ASTROSAT CZTI

Data Quality Report

Orbit 26675

Creation date: 2024-06-27T19:31:38.798999
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/AS1A09_145T01_9000003848_26675cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26675cztM0_level2_quad_clean.evt
Size (bytes)445,118,40084,864,960
Size424.5 MB 80.9 MB
Events in quadrant A3,608,305558,946
Events in quadrant B2,937,061561,845
Events in quadrant C2,863,740537,637
Events in quadrant D3,695,631524,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143950
B0119100
C0117160
D0144500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5536671.210260%
B5537801.444826%
C5537661.191981%
D55371983.575944%

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 6736 5537 12 12 0.18% 0.22%
B 6737 5538 30 30 0.45% 0.54%
C 6737 5538 0 0 0.00% 0.00%
D 6737 5538 137 137 2.03% 2.47%

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 0 13 765410 5201.75 735 725 147.0
A 0 31 8534 53.12 735 725 147.0
A 13 254 8453 52.57 735 725 147.0
B 10 245 96780 704.64 720 705 136.3
B 12 111 15551 108.88 720 705 136.3
B 11 111 14246 99.31 720 705 136.3
C 14 238 113104 692.29 694 699 162.4
C 3 233 31706 190.97 694 699 162.4
C 2 16 8578 48.52 694 699 162.4
D 7 80 357342 2064.1 701 682 172.8
D 2 250 247267 1427.06 701 682 172.8
D 12 233 208455 1202.44 701 682 172.8

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