ASTROSAT CZTI

Data Quality Report

Orbit 16476

Creation date: 2024-06-27T17:23:17.681527
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/AS1A05_108T01_9000002438_16476cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16476cztM0_level2_quad_clean.evt
Size (bytes)117,820,8004,726,080
Size112.4 MB 4.5 MB
Events in quadrant A815,3556,616
Events in quadrant B923,7256,101
Events in quadrant C925,7105,887
Events in quadrant D792,8976,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034832
B037391
C036981
D034561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15831137.138345%
B15831177.391030%
C15831278.022742%
D1583845.306380%

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 1609 1584 0 0 0.00% 0.00%
B 1609 1584 0 0 0.00% 0.00%
C 1609 1584 0 0 0.00% 0.00%
D 1609 1584 0 0 0.00% 0.00%

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 15 174 5257 110.63 210 204 45.7
A 0 226 1792 34.77 210 204 45.7
A 3 137 1612 30.83 210 204 45.7
B 10 16 51353 1164.48 210 203 43.9
B 4 48 34218 774.39 210 203 43.9
B 15 35 5390 118.09 210 203 43.9
C 3 233 79113 1559.1 205 205 50.6
C 14 238 30870 605.89 205 205 50.6
C 7 247 14125 275.04 205 205 50.6
D 2 234 6098 110.55 209 202 53.3
D 1 52 3132 54.94 209 202 53.3
D 13 168 2411 41.42 209 202 53.3

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