ASTROSAT CZTI

Data Quality Report

Orbit 41463

Creation date: 2024-06-27T22:29:24.223051
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/AS1C06_010T05_9000005670_41463cztM0_level2.fits modeM0/AS1C06_010T05_9000005670_41463cztM0_level2_quad_clean.evt
Size (bytes)331,145,28085,697,280
Size315.8 MB 81.7 MB
Events in quadrant A2,821,403578,698
Events in quadrant B2,389,983596,613
Events in quadrant C2,969,557542,257
Events in quadrant D3,658,623500,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116113
B0110892
C0124982
D0147892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5366130.242266%
B536690.167723%
C53662434.528513%
D53662855.311219%

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 7219 5367 7 7 0.10% 0.13%
B 7219 5367 2 2 0.03% 0.04%
C 7219 5367 235 235 3.26% 4.38%
D 7219 5367 251 251 3.48% 4.68%

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 543786 4730.73 562 551 114.8
A 2 79 58246 502.43 562 551 114.8
A 13 248 36215 310.58 562 551 114.8
B 0 190 110147 1022.55 561 547 107.2
B 5 255 45902 423.16 561 547 107.2
B 12 111 13479 120.65 561 547 107.2
C 0 10 664924 5384.73 530 532 123.4
C 15 214 220119 1779.7 530 532 123.4
C 15 111 6809 50.87 530 532 123.4
D 1 52 571348 4365.43 532 516 130.8
D 1 47 373025 2848.76 532 516 130.8
D 13 249 211465 1613.23 532 516 130.8

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