ASTROSAT CZTI

Data Quality Report

Orbit 20190205_A05_194T05_9000002702_level2

Creation date: 2025-11-27T12:48:49.595848
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_194T05_9000002702cztM0_level2.fits modeM0/AS1A05_194T05_9000002702cztM0_level2_quad_clean.evt
Size (bytes)159,105,600152,663,040
Size151.7 MB 145.6 MB
Events in quadrant A972,348901,008
Events in quadrant B930,450906,671
Events in quadrant C937,342856,522
Events in quadrant D826,386806,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0356220
B0357210
C0389020
D0469280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167022461.472877%
B167023051.826129%
C167026914.137229%
D167025143.077476%

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 17742 16702 0 0 0.00% 0.00%
B 17742 16702 0 0 0.00% 0.00%
C 17742 16698 0 0 0.00% 0.00%
D 17742 16699 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 0 29 882 10.03 252 235 64.5
A 7 110 787 8.56 252 235 64.5
A 15 236 740 7.83 252 235 64.5
B 2 9 846 12.0 245 233 51.1
B 2 8 702 9.18 245 233 51.1
B 5 225 625 7.67 245 233 51.1
C 1 81 692 7.1 247 231 64.9
C 1 80 688 7.04 247 231 64.9
C 12 241 663 6.66 247 231 64.9
D 3 14 616 6.21 235 214 64.8
D 10 190 612 6.15 235 214 64.8
D 7 3 611 6.13 235 214 64.8

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