ASTROSAT CZTI

Data Quality Report

Orbit 50371

Creation date: 2025-01-20T10:45:46.559941
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/AS1C09_003T01_9000006442_50371cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50371cztM0_level2_quad_clean.evt
Size (bytes)2,444,757,120206,432,640
Size2.3 GB 196.9 MB
Events in quadrant A14,715,9661,588,838
Events in quadrant B11,937,1641,758,441
Events in quadrant C25,470,3891,185,537
Events in quadrant D36,953,205445,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561903
B0483923
C0885313
D01225298

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1843612016.514428%
B184378354.528936%
C18437511827.759397%
D184361362673.909742%

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 19821 18441 925 925 4.67% 5.02%
B 19822 18442 491 491 2.48% 2.66%
C 19822 18441 4557 4557 22.99% 24.71%
D 19821 18439 10532 10532 53.14% 57.12%

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 12 250 849609 1754.76 1935 1884 483.1
A 3 95 789080 1629.46 1935 1884 483.1
A 10 253 572598 1181.36 1935 1884 483.1
B 5 172 674450 1644.95 1926 1856 408.9
B 10 247 641943 1565.45 1926 1856 408.9
B 1 207 401308 976.93 1926 1856 408.9
C 15 232 3958608 8102.5 1732 1722 488.4
C 15 236 2472246 5058.88 1732 1722 488.4
C 15 127 1644195 3363.29 1732 1722 488.4
D 7 61 18612939 56398.81 1120 1083 330.0
D 12 1 7353585 22280.01 1120 1083 330.0
D 7 126 915051 2769.56 1120 1083 330.0

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