ASTROSAT CZTI

Data Quality Report

Orbit 17893

Creation date: 2024-06-27T17:42:17.240321
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/AS1T03_075T01_9000002660_17893cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17893cztM0_level2_quad_clean.evt
Size (bytes)498,813,120101,712,960
Size475.7 MB 97.0 MB
Events in quadrant A3,535,093642,606
Events in quadrant B3,665,400661,920
Events in quadrant C3,755,941636,065
Events in quadrant D3,644,551621,841

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156252
B0158462
C0159832
D0162432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7438941.263781%
B74381542.070449%
C74381802.420005%
D7438580.779780%

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 9403 7440 0 0 0.00% 0.00%
B 9403 7440 0 0 0.00% 0.00%
C 9403 7440 0 0 0.00% 0.00%
D 9403 7440 3 3 0.03% 0.04%

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 0 226 7966 37.66 918 898 187.7
A 3 137 6901 31.98 918 898 187.7
A 12 194 6596 30.36 918 898 187.7
B 12 111 21530 116.07 924 897 177.8
B 0 189 20321 109.27 924 897 177.8
B 11 111 18491 98.98 924 897 177.8
C 3 233 155213 738.45 888 890 209.0
C 14 238 136204 647.49 888 890 209.0
C 13 61 6336 26.06 888 890 209.0
D 13 168 115315 525.65 894 868 217.7
D 7 238 78639 357.2 894 868 217.7
D 10 70 28816 128.37 894 868 217.7

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