ASTROSAT CZTI

Data Quality Report

Orbit 43527

Creation date: 2024-06-27T22:52:48.140999
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_018T01_9000005874_43527cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43527cztM0_level2_quad_clean.evt
Size (bytes)288,100,80016,899,840
Size274.8 MB 16.1 MB
Events in quadrant A3,065,303134,664
Events in quadrant B2,023,993151,904
Events in quadrant C3,861,74396,612
Events in quadrant D1,579,2982,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010943677
B07716519
C0137201096
D06207318

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B011
C111
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371
B0371
C0395
D0372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169379146.721796%
B169425014.757969%
C1689139082.297217%
D17081708100.000000%

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 1856 1713 636 636 34.27% 37.13%
B 1856 1719 212 212 11.42% 12.33%
C 1855 1693 1247 1247 67.22% 73.66%
D 1856 1707 10 10 0.54% 0.59%

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 0 228 1384527 39426.95 159 157 35.1
A 0 227 249918 7113.21 159 157 35.1
A 0 229 213339 6071.44 159 157 35.1
B 3 42 549530 14922.13 180 175 36.8
B 3 25 524951 14254.49 180 175 36.8
B 0 219 81828 2217.94 180 175 36.8
C 15 158 873005 29414.38 117 117 29.7
C 15 142 827928 27895.39 117 117 29.7
C 15 110 354091 11928.13 117 117 29.7
D 4 214 657693 257538.23 2 2 2.6
D 4 124 204748 80174.31 2 2 2.6
D 4 215 142734 55890.91 2 2 2.6

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