ASTROSAT CZTI

Data Quality Report

Orbit 40441

Creation date: 2024-06-27T22:16:08.610292
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/AS1A12_022T01_9000005540_40441cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40441cztM0_level2_quad_clean.evt
Size (bytes)309,859,20086,650,560
Size295.5 MB 82.6 MB
Events in quadrant A2,839,097594,156
Events in quadrant B2,406,478614,091
Events in quadrant C2,667,885586,395
Events in quadrant D3,124,216442,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117703
B0111542
C0115442
D0132012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5529130.235124%
B5529100.180865%
C5529150.271297%
D5529103918.791825%

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 7171 5530 2 2 0.03% 0.04%
B 7171 5530 2 2 0.03% 0.04%
C 7171 5530 12 12 0.17% 0.22%
D 7171 5530 58 58 0.81% 1.05%

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 10 83 491017 3984.7 597 584 123.1
A 7 3 16183 126.74 597 584 123.1
A 2 79 12696 98.41 597 584 123.1
B 3 112 39464 336.73 590 572 115.5
B 5 255 17737 148.62 590 572 115.5
B 12 111 14928 124.3 590 572 115.5
C 15 214 240071 1776.55 577 582 134.8
C 14 254 164067 1212.75 577 582 134.8
C 12 249 10171 71.13 577 582 134.8
D 12 227 606713 4804.63 509 494 126.2
D 12 191 217093 1716.67 509 494 126.2
D 2 250 191263 1511.95 509 494 126.2

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