ASTROSAT CZTI

Data Quality Report

Orbit 54100

Creation date: 2025-09-29T10:41:10.006463
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_041T01_9000006510_54100cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54100cztM0_level2_quad_clean.evt
Size (bytes)650,574,720117,106,560
Size620.4 MB 111.7 MB
Events in quadrant A3,867,495804,522
Events in quadrant B6,724,602785,402
Events in quadrant C7,864,246655,168
Events in quadrant D4,967,129710,861

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179840
B0259560
C0294150
D0209590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8489500.588998%
B848994711.155613%
C8489123914.595359%
D84901141.342756%

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 8489 8489 32 32 0.38% 0.38%
B 8489 8489 412 412 4.85% 4.85%
C 8489 8489 1123 1123 13.23% 13.23%
D 8490 8490 82 82 0.97% 0.97%

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 13 248 149520 664.23 900 874 223.8
A 15 174 40796 178.39 900 874 223.8
A 0 8 35715 155.69 900 874 223.8
B 5 250 2407131 12962.64 870 840 185.6
B 1 255 198164 1062.98 870 840 185.6
B 7 252 168404 902.66 870 840 185.6
C 1 241 2805872 12545.14 812 803 223.6
C 1 16 1230639 5500.21 812 803 223.6
C 13 3 356332 1590.04 812 803 223.6
D 4 238 389885 1563.6 878 838 248.8
D 8 176 199256 797.45 878 838 248.8
D 3 12 166618 666.28 878 838 248.8

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