ASTROSAT CZTI

Data Quality Report

Orbit 45464

Creation date: 2024-06-27T23:12:36.864679
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/AS1A13_038T04_9000006090_45464cztM0_level2.fits modeM0/AS1A13_038T04_9000006090_45464cztM0_level2_quad_clean.evt
Size (bytes)229,795,20057,254,400
Size219.1 MB 54.6 MB
Events in quadrant A2,803,941368,746
Events in quadrant B1,980,686387,439
Events in quadrant C1,659,164377,445
Events in quadrant D1,781,487345,202

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151254350
B0113393027
C0103512717
D0106542784

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139820674172968139818365354030
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09623
B09924
C010226
D010224

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3484300.861079%
B3599842.333982%
C363570.192572%
D3626110.303365%

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 4313 3700 0 0 0.00% 0.00%
B 4483 3854 30 30 0.67% 0.78%
C 4538 3882 1 1 0.02% 0.03%
D 4443 3863 5 5 0.11% 0.13%

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 1219952 13901.82 408 398 87.7
A 0 243 9813 107.32 408 398 87.7
A 3 137 4817 50.37 408 398 87.7
B 15 201 120057 1385.04 423 409 86.4
B 3 112 99357 1145.41 423 409 86.4
B 5 172 46630 535.05 423 409 86.4
C 14 254 13571 130.02 421 422 101.1
C 13 61 2707 22.6 421 422 101.1
C 1 3 2692 22.45 421 422 101.1
D 11 241 49519 466.87 416 403 105.2
D 1 52 38689 363.93 416 403 105.2
D 13 249 28878 270.67 416 403 105.2

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