ASTROSAT CZTI

Data Quality Report

Orbit 53627

Creation date: 2025-08-27T11:01:56.876776
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/AS1A14_004T05_9000006502_53627cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53627cztM0_level2_quad_clean.evt
Size (bytes)862,732,80077,460,480
Size822.8 MB 73.9 MB
Events in quadrant A8,819,609471,379
Events in quadrant B5,423,744589,974
Events in quadrant C11,269,738332,324
Events in quadrant D5,933,282509,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305281
B0205261
C0377141
D0220482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336175927.761995%
B633675711.947601%
C6337300947.483036%
D63365648.901515%

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 7317 6338 1785 1785 24.40% 28.16%
B 7317 6338 479 479 6.55% 7.56%
C 7318 6339 3001 3001 41.01% 47.34%
D 7317 6338 598 598 8.17% 9.44%

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 4 95 3673064 23722.08 631 616 154.8
A 3 78 2255145 14563.07 631 616 154.8
A 3 63 166283 1070.12 631 616 154.8
B 15 20 1997997 14228.71 649 627 140.4
B 4 206 261052 1855.19 649 627 140.4
B 5 172 213801 1518.59 649 627 140.4
C 1 241 5508158 41299.73 481 479 133.4
C 15 224 2994315 22449.5 481 479 133.4
C 7 80 265648 1988.39 481 479 133.4
D 8 176 2016549 11027.87 634 605 182.8
D 10 172 522764 2856.38 634 605 182.8
D 2 153 197718 1078.27 634 605 182.8

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