ASTROSAT CZTI

Data Quality Report

Orbit 00983

Creation date: 2024-06-27T14:05:41.652550
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/AS1P01_998T01_9000000188_00983cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00983cztM0_level2_quad_clean.evt
Size (bytes)1,110,093,120104,019,840
Size1.0 GB 99.2 MB
Events in quadrant A7,865,160696,529
Events in quadrant B8,367,979691,602
Events in quadrant C7,857,770666,630
Events in quadrant D9,104,367648,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279180
B0294010
C0279180
D0315810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6416360.561097%
B6416841.309227%
C6415230.358535%
D64151121.745908%

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 7626 6417 203 203 2.66% 3.16%
B 7626 6417 341 341 4.47% 5.31%
C 7625 6416 173 173 2.27% 2.70%
D 7625 6416 775 775 10.16% 12.08%

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 15 233 81736 166.25 2016 2028 479.4
A 12 247 14315 25.63 2016 2028 479.4
A 14 170 12308 21.44 2016 2028 479.4
B 5 200 155810 320.05 2052 2064 480.4
B 0 220 126316 258.65 2052 2064 480.4
B 7 221 101037 206.03 2052 2064 480.4
C 15 241 327979 625.57 1885 1953 521.2
C 3 9 99642 187.44 1885 1953 521.2
C 3 79 35224 63.84 1885 1953 521.2
D 1 4 1314272 2310.19 1855 1916 568.1
D 12 188 582269 1021.62 1855 1916 568.1
D 12 22 135644 235.41 1855 1916 568.1

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