ASTROSAT CZTI

Data Quality Report

Orbit 20190731_A05_013T01_9000003070_level2

Creation date: 2025-12-02T20:43:12.553874
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_013T01_9000003070cztM0_level2.fits modeM0/AS1A05_013T01_9000003070cztM0_level2_quad_clean.evt
Size (bytes)4,038,762,2403,621,499,200
Size3.8 GB 3.4 GB
Events in quadrant A25,603,63622,291,304
Events in quadrant B24,062,41621,603,353
Events in quadrant C24,744,61621,036,568
Events in quadrant D20,190,51117,053,132

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082510
B082610
C082620
D082400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08503850
B09114350
C08547850
D013800880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06770
B06770
C06790
D06750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40457640681.005497%
B40441275491.866661%
C40451361771.527021%
D4037015081212.586543%

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 499184 406486 0 0 0.00% 0.00%
B 499184 406281 0 0 0.00% 0.00%
C 499183 406439 0 0 0.00% 0.00%
D 499183 404550 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 24600 11.34 6673 6293 1614.6
A 7 110 20114 8.56 6673 6293 1614.6
A 9 19 19381 8.11 6673 6293 1614.6
B 2 9 19380 10.89 6364 6098 1219.1
B 2 8 16306 8.37 6364 6098 1219.1
B 3 17 15675 7.86 6364 6098 1219.1
C 12 241 16699 6.44 6534 6142 1639.4
C 3 126 16665 6.42 6534 6142 1639.4
C 12 250 16495 6.31 6534 6142 1639.4
D 3 14 14364 5.99 5785 5296 1515.0
D 10 189 14301 5.94 5785 5296 1515.0
D 6 231 14137 5.84 5785 5296 1515.0

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