ASTROSAT CZTI

Data Quality Report

Orbit 51595

Creation date: 2025-04-12T15:54:25.151380
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_037T05_9000006460_51595cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51595cztM0_level2_quad_clean.evt
Size (bytes)1,177,675,200202,449,600
Size1.1 GB 193.1 MB
Events in quadrant A9,639,6611,352,507
Events in quadrant B10,950,3891,383,170
Events in quadrant C9,187,9331,302,563
Events in quadrant D12,716,0701,108,841

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382333
B0421473
C0370173
D0474797

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142247505.272778%
B14225144310.144112%
C142256104.288225%
D14224174812.289089%

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 17109 14226 379 379 2.22% 2.66%
B 17110 14228 879 879 5.14% 6.18%
C 17110 14228 399 399 2.33% 2.80%
D 17109 14225 1437 1437 8.40% 10.10%

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 1250858 3267.42 1573 1538 382.4
A 4 175 903067 2357.82 1573 1538 382.4
A 5 240 193156 501.15 1573 1538 382.4
B 4 174 1050752 3253.64 1517 1466 322.5
B 5 172 1025749 3176.11 1517 1466 322.5
B 5 185 444567 1373.97 1517 1466 322.5
C 13 3 1055086 2490.94 1528 1516 423.0
C 15 232 435722 1026.59 1528 1516 423.0
C 3 233 338976 797.85 1528 1516 423.0
D 5 113 2799814 6912.18 1458 1406 404.9
D 12 6 1066528 2630.89 1458 1406 404.9
D 3 12 960197 2368.25 1458 1406 404.9

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