ASTROSAT CZTI

Data Quality Report

Orbit 41777

Creation date: 2024-06-27T22:32:43.882529
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_044T19_9000005698_41777cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41777cztM0_level2_quad_clean.evt
Size (bytes)324,319,68089,847,360
Size309.3 MB 85.7 MB
Events in quadrant A2,943,055621,172
Events in quadrant B2,835,541626,429
Events in quadrant C3,195,421564,472
Events in quadrant D2,633,033550,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117653
B0115442
C0124122
D0112672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5109170.332746%
B51091011.976904%
C51092725.323938%
D5109641.252691%

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 7052 5110 2 2 0.03% 0.04%
B 7052 5110 90 90 1.28% 1.76%
C 7052 5110 256 256 3.63% 5.01%
D 7052 5110 64 64 0.91% 1.25%

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 542394 4300.88 608 597 126.0
A 2 79 30688 238.87 608 597 126.0
A 3 1 17211 131.88 608 597 126.0
B 3 112 230843 2000.54 594 578 115.1
B 4 141 92581 799.32 594 578 115.1
B 0 186 66050 568.82 594 578 115.1
C 0 10 789808 6049.2 560 565 130.5
C 15 214 203408 1554.7 560 565 130.5
C 4 254 11719 85.49 560 565 130.5
D 2 249 267747 1853.04 589 571 144.2
D 13 249 49436 338.91 589 571 144.2
D 2 234 25430 172.41 589 571 144.2

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