ASTROSAT CZTI

Data Quality Report

Orbit 16824

Creation date: 2024-06-27T17:28:16.341977
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_140T01_9000002496_16824cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16824cztM0_level2_quad_clean.evt
Size (bytes)276,065,28036,380,160
Size263.3 MB 34.7 MB
Events in quadrant A1,496,873237,609
Events in quadrant B1,669,592237,344
Events in quadrant C1,507,547227,964
Events in quadrant D3,481,459184,098

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064810
B069200
C064330
D0123250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3000160.533333%
B3000270.900000%
C300070.233333%
D300063821.266667%

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 3001 3001 7 7 0.23% 0.23%
B 3001 3001 7 7 0.23% 0.23%
C 3001 3001 0 0 0.00% 0.00%
D 3001 3001 560 560 18.66% 18.66%

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 126536 1753.68 342 336 72.0
A 9 143 52989 731.67 342 336 72.0
A 0 226 3083 38.17 342 336 72.0
B 0 189 176899 2577.03 344 335 68.5
B 15 35 48373 701.14 344 335 68.5
B 10 16 26774 385.89 344 335 68.5
C 3 233 124979 1604.44 325 329 77.7
C 0 207 52127 666.72 325 329 77.7
C 14 238 50813 649.81 325 329 77.7
D 1 52 1988463 26206.56 301 292 75.9
D 15 0 151946 1998.99 301 292 75.9
D 5 222 143283 1884.8 301 292 75.9

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