ASTROSAT CZTI

Data Quality Report

Orbit 20200807_A09_044T01_9000003792_level2

Creation date: 2025-12-14T05:12:26.410433
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/AS1A09_044T01_9000003792cztM0_level2.fits modeM0/AS1A09_044T01_9000003792cztM0_level2_quad_clean.evt
Size (bytes)398,344,320324,316,800
Size379.9 MB 309.3 MB
Events in quadrant A2,481,1701,900,642
Events in quadrant B2,412,5261,936,866
Events in quadrant C2,431,2161,853,968
Events in quadrant D1,995,0041,387,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0875170
B0830320
C0906800
D01352610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08120
B08120
C08120
D08120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A399237451.866092%
B399225961.492911%
C3992316194.055306%
D39923566714.194825%

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 45609 39924 0 0 0.00% 0.00%
B 45609 39924 0 0 0.00% 0.00%
C 45609 39900 0 0 0.00% 0.00%
D 45609 39836 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 2038 8.95 646 606 160.0
A 7 110 2002 8.72 646 606 160.0
A 9 19 1897 8.07 646 606 160.0
B 2 9 1920 10.49 637 609 125.0
B 5 128 1639 8.24 637 609 125.0
B 5 232 1613 8.03 637 609 125.0
C 12 241 1698 6.76 643 604 161.9
C 3 126 1676 6.62 643 604 161.9
C 2 191 1660 6.52 643 604 161.9
D 7 3 1428 6.07 568 518 150.0
D 6 231 1408 5.93 568 518 150.0
D 10 189 1397 5.86 568 518 150.0

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