ASTROSAT CZTI

Data Quality Report

Orbit 28578

Creation date: 2024-06-27T19:53:36.265337
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_102T03_9000004106_28578cztM0_level2.evt modeM0/AS1A10_102T03_9000004106_28578cztM0_level2_quad_clean.evt
Size (bytes)554,060,16099,743,040
Size528.4 MB 95.1 MB
Events in quadrant A3,622,211634,673
Events in quadrant B3,806,680645,257
Events in quadrant C3,652,027622,415
Events in quadrant D5,197,889604,577

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155431
B0159881
C0155661
D0205531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7380751.016260%
B73811492.018697%
C73811471.991600%
D73813134.240618%

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 7615 7381 1 1 0.01% 0.01%
B 7616 7381 18 18 0.24% 0.24%
C 7616 7382 0 0 0.00% 0.00%
D 7616 7383 223 223 2.93% 3.02%

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 86777 463.54 912 894 185.3
A 13 254 12865 64.61 912 894 185.3
A 3 137 9063 44.09 912 894 185.3
B 4 171 187326 1062.4 907 885 175.5
B 12 111 21777 119.05 907 885 175.5
B 11 111 19651 106.93 907 885 175.5
C 14 238 141228 673.08 876 882 208.5
C 0 207 40480 189.91 876 882 208.5
C 7 247 29730 138.35 876 882 208.5
D 1 52 1283663 6055.75 873 848 211.8
D 8 195 320188 1507.5 873 848 211.8
D 12 79 141807 665.42 873 848 211.8

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