ASTROSAT CZTI

Data Quality Report

Orbit 37331

Creation date: 2024-06-27T21:38:33.789789
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/AS1A11_030T02_9000005310_37331cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37331cztM0_level2_quad_clean.evt
Size (bytes)545,149,44072,616,320
Size519.9 MB 69.3 MB
Events in quadrant A2,843,626478,223
Events in quadrant B2,687,252496,756
Events in quadrant C3,891,750472,483
Events in quadrant D6,749,005400,639

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114883
B0111042
C0146902
D0234722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4997420.840504%
B4997571.140684%
C49972545.083050%
D4997130226.055633%

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 6969 4998 28 28 0.40% 0.56%
B 6969 4998 26 26 0.37% 0.52%
C 6969 4998 236 236 3.39% 4.72%
D 6969 4998 1282 1282 18.40% 25.65%

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 264930 2195.59 603 592 120.4
A 13 248 128379 1061.4 603 592 120.4
A 9 143 90273 744.89 603 592 120.4
B 0 190 89663 779.64 604 590 114.2
B 5 255 68537 594.73 604 590 114.2
B 5 172 53644 464.37 604 590 114.2
C 1 23 1207453 8803.93 590 596 137.1
C 15 214 210552 1531.61 590 596 137.1
C 0 10 143215 1040.39 590 596 137.1
D 12 227 3640021 27571.16 544 531 132.0
D 13 171 420626 3182.45 544 531 132.0
D 2 249 353885 2676.85 544 531 132.0

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