ASTROSAT CZTI

Data Quality Report

Orbit 41461

Creation date: 2024-06-27T22:29:22.569601
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_41461cztM0_level2.fits modeM0/AS1C06_010T05_9000005670_41461cztM0_level2_quad_clean.evt
Size (bytes)207,737,28060,361,920
Size198.1 MB 57.6 MB
Events in quadrant A1,850,480406,640
Events in quadrant B1,618,365421,573
Events in quadrant C1,922,189387,763
Events in quadrant D2,018,156358,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077072
B073631
C080841
D087011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358070.195531%
B358020.055866%
C35801233.435754%
D35801203.351955%

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 5703 3581 1 1 0.02% 0.03%
B 5703 3581 1 1 0.02% 0.03%
C 5703 3581 121 121 2.12% 3.38%
D 5703 3581 97 97 1.70% 2.71%

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 314153 3943.24 385 378 79.6
A 2 79 26657 330.25 385 378 79.6
A 13 248 17313 212.82 385 378 79.6
B 0 190 84547 1132.78 385 374 74.3
B 5 255 11435 148.86 385 374 74.3
B 12 111 9356 120.88 385 374 74.3
C 0 10 358814 4229.29 363 366 84.8
C 15 214 144965 1706.11 363 366 84.8
C 13 61 2593 26.28 363 366 84.8
D 5 222 200171 2246.81 364 354 88.9
D 12 233 137002 1536.52 364 354 88.9
D 1 47 115089 1290.12 364 354 88.9

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