ASTROSAT CZTI

Data Quality Report

Orbit 46542

Creation date: 2024-06-27T23:24:29.318784
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/AS1A13_091T07_9000006226_46542cztM0_level2.fits modeM0/AS1A13_091T07_9000006226_46542cztM0_level2_quad_clean.evt
Size (bytes)102,286,08019,212,480
Size97.5 MB 18.3 MB
Events in quadrant A1,360,754121,072
Events in quadrant B643,871132,044
Events in quadrant C576,849125,527
Events in quadrant D1,110,284113,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048931
B027121
C025341
D041441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1182978.206430%
B1182211.776650%
C1182110.930626%
D1182524.399323%

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 1182 1182 27 27 2.28% 2.28%
B 1182 1182 9 9 0.76% 0.76%
C 1182 1182 4 4 0.34% 0.34%
D 1182 1182 32 32 2.71% 2.71%

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 10 83 794368 27086.24 130 126 29.3
A 9 191 45305 1540.75 130 126 29.3
A 0 243 4849 161.07 130 126 29.3
B 0 245 45651 1587.87 134 129 28.7
B 3 112 20844 722.57 134 129 28.7
B 5 32 14613 505.22 134 129 28.7
C 9 54 28959 866.23 133 134 33.3
C 12 2 6207 182.5 133 134 33.3
C 3 233 6199 182.26 133 134 33.3
D 8 176 331210 9345.6 132 127 35.4
D 1 52 103373 2914.36 132 127 35.4
D 5 33 62582 1762.94 132 127 35.4

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