ASTROSAT CZTI

Data Quality Report

Orbit 40824

Creation date: 2024-06-27T22:21:00.004749
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_104T02_9000005572_40824cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40824cztM0_level2_quad_clean.evt
Size (bytes)286,205,76085,242,240
Size272.9 MB 81.3 MB
Events in quadrant A2,750,373575,106
Events in quadrant B2,229,910596,394
Events in quadrant C2,498,360558,961
Events in quadrant D2,731,183504,867

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111443
B099672
C0104042
D0117582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492960.121729%
B4929100.202881%
C4929360.730371%
D49291152.333130%

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 4930 4 4 0.06% 0.08%
B 7052 4930 1 1 0.01% 0.02%
C 7052 4930 42 42 0.60% 0.85%
D 7052 4930 80 80 1.13% 1.62%

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 468950 4101.66 558 546 114.2
A 6 10 55085 477.58 558 546 114.2
A 12 189 53232 461.35 558 546 114.2
B 0 190 28111 255.71 558 543 107.8
B 12 111 13652 121.6 558 543 107.8
B 11 111 12596 111.8 558 543 107.8
C 15 214 211339 1660.13 543 547 127.0
C 0 10 143484 1125.72 543 547 127.0
C 14 254 10818 80.89 543 547 127.0
D 2 249 374545 2911.2 531 516 128.5
D 13 249 210271 1632.6 531 516 128.5
D 1 47 71509 552.56 531 516 128.5

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