ASTROSAT CZTI

Data Quality Report

Orbit 56486

Creation date: 2026-03-08T10:46:32.776174
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_060T01_9000006556_56486cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56486cztM0_level2_quad_clean.evt
Size (bytes)981,072,000197,755,200
Size935.6 MB 188.6 MB
Events in quadrant A9,877,1301,241,980
Events in quadrant B8,025,9941,398,517
Events in quadrant C6,647,2131,255,707
Events in quadrant D10,677,1801,119,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391343
B0334241
C0304551
D0413431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140588536.067719%
B140593022.148090%
C140591591.130948%
D140599586.814140%

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 14348 14059 515 515 3.59% 3.66%
B 14349 14060 70 70 0.49% 0.50%
C 14349 14060 70 70 0.49% 0.50%
D 14349 14060 765 765 5.33% 5.44%

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 12 3 978955 2632.37 1495 1455 371.3
A 3 45 918604 2469.85 1495 1455 371.3
A 0 8 508960 1366.69 1495 1455 371.3
B 5 172 1039240 3238.11 1509 1455 320.5
B 0 153 180884 559.86 1509 1455 320.5
B 0 213 135114 417.04 1509 1455 320.5
C 12 252 229215 563.84 1481 1468 403.9
C 12 249 198435 487.64 1481 1468 403.9
C 15 147 117789 287.98 1481 1468 403.9
D 12 4 1431135 3501.14 1441 1376 408.4
D 2 249 1362817 3333.84 1441 1376 408.4
D 11 176 586107 1431.87 1441 1376 408.4

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