ASTROSAT CZTI

Data Quality Report

Orbit 20190324_A05_194T13_9000002814_level2

Creation date: 2025-11-28T22:55:12.015842
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/AS1A05_194T13_9000002814cztM0_level2.fits modeM0/AS1A05_194T13_9000002814cztM0_level2_quad_clean.evt
Size (bytes)306,360,000202,216,320
Size292.2 MB 192.8 MB
Events in quadrant A1,956,5521,105,849
Events in quadrant B1,868,6361,093,982
Events in quadrant C1,852,6621,021,052
Events in quadrant D1,614,684914,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610120
B0676210
C0617080
D0753640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A288901620.560748%
B288903611.249567%
C288902750.951886%
D2889010273.554863%

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 35161 28890 0 0 0.00% 0.00%
B 35161 28889 0 0 0.00% 0.00%
C 35161 28890 0 0 0.00% 0.00%
D 35161 28887 0 0 0.00% 0.00%

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 7 110 1589 8.96 510 481 123.6
A 0 29 1543 8.59 510 481 123.6
A 9 19 1401 7.44 510 481 123.6
B 2 9 1484 10.23 495 475 98.6
B 5 128 1252 7.88 495 475 98.6
B 2 8 1234 7.7 495 475 98.6
C 1 80 1401 7.41 489 460 126.9
C 1 81 1328 6.84 489 460 126.9
C 12 241 1246 6.19 489 460 126.9
D 10 190 1263 6.86 461 420 122.9
D 6 67 1167 6.08 461 420 122.9
D 10 189 1138 5.84 461 420 122.9

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