ASTROSAT CZTI

Data Quality Report

Orbit 28981

Creation date: 2024-06-27T19:58:46.843717
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/AS1A10_048T03_9000004154_28981cztM0_level2.evt modeM0/AS1A10_048T03_9000004154_28981cztM0_level2_quad_clean.evt
Size (bytes)561,061,44097,634,880
Size535.1 MB 93.1 MB
Events in quadrant A3,395,786629,948
Events in quadrant B3,692,811649,437
Events in quadrant C3,477,459618,255
Events in quadrant D5,957,541577,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144432
B0151962
C0145412
D0225302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6912450.651042%
B6912821.186343%
C6912781.128472%
D69113545.122269%

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 7936 6917 1 1 0.01% 0.01%
B 7936 6917 2 2 0.03% 0.03%
C 7936 6917 0 0 0.00% 0.00%
D 7935 6916 341 341 4.30% 4.93%

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 15 192 26299 146.83 866 849 173.3
A 13 254 12636 68.0 866 849 173.3
A 13 6 10832 57.59 866 849 173.3
B 10 245 239901 1426.71 865 845 167.6
B 10 246 28126 162.82 865 845 167.6
B 12 111 20598 117.89 865 845 167.6
C 14 238 134459 682.79 834 842 195.7
C 3 233 80977 409.49 834 842 195.7
C 2 114 15837 76.62 834 842 195.7
D 8 195 1484813 7571.74 820 799 196.0
D 7 80 1246806 6357.38 820 799 196.0
D 1 52 56130 282.31 820 799 196.0

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