ASTROSAT CZTI

Data Quality Report

Orbit 41927

Creation date: 2024-06-27T22:34:36.412195
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_099T03_9000005720_41927cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41927cztM0_level2_quad_clean.evt
Size (bytes)681,914,88071,550,720
Size650.3 MB 68.2 MB
Events in quadrant A3,249,060602,287
Events in quadrant B3,407,626596,257
Events in quadrant C3,452,029554,917
Events in quadrant D14,706,52328,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130812
B0139012
C0136802
D0470682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5493530.964864%
B54932464.478427%
C54933416.207901%
D5493527496.013108%

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 7196 5494 33 33 0.46% 0.60%
B 7196 5494 187 187 2.60% 3.40%
C 7196 5494 289 289 4.02% 5.26%
D 7196 5494 5199 5199 72.25% 94.63%

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 540840 4411.4 595 584 122.5
A 14 24 356002 2902.13 595 584 122.5
A 2 79 29876 239.18 595 584 122.5
B 0 229 899574 8048.72 578 562 111.7
B 5 255 97882 871.29 578 562 111.7
B 0 156 40155 354.47 578 562 111.7
C 0 10 808431 6258.64 549 553 129.1
C 14 254 231968 1792.77 549 553 129.1
C 15 214 213730 1651.48 549 553 129.1
D 12 79 13548050 251093.97 215 209 54.0
D 13 249 135265 2503.11 215 209 54.0
D 1 52 75960 1403.96 215 209 54.0

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