ASTROSAT CZTI

Data Quality Report

Orbit 11206

Creation date: 2024-06-27T16:09:45.444654
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/AS1A04_171T01_9000001634_11206cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11206cztM0_level2_quad_clean.evt
Size (bytes)668,341,44061,721,280
Size637.4 MB 58.9 MB
Events in quadrant A9,589,045237,484
Events in quadrant B3,874,142399,309
Events in quadrant C2,862,044403,363
Events in quadrant D3,484,553383,783

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03285652
B01570446
C01310826
D01463240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354271042.650299%
B63542694.233554%
C6359791.242334%
D63561522.391441%

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 6926 6365 2320 2320 33.50% 36.45%
B 6924 6362 101 101 1.46% 1.59%
C 6927 6365 0 0 0.00% 0.00%
D 6927 6369 60 60 0.87% 0.94%

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 15 239 7087246 63736.11 537 525 111.2
A 8 15 328488 2949.61 537 525 111.2
A 8 5 62652 558.75 537 525 111.2
B 4 239 866887 6026.0 741 721 143.7
B 4 80 40174 274.48 741 721 143.7
B 15 204 27511 186.38 741 721 143.7
C 12 4 14361 79.86 730 732 170.7
C 13 61 5420 27.47 730 732 170.7
C 14 67 1870 6.67 730 732 170.7
D 2 136 236593 1368.35 719 698 172.4
D 8 195 176742 1021.17 719 698 172.4
D 14 34 74370 427.35 719 698 172.4

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