ASTROSAT CZTI

Data Quality Report

Orbit 53620

Creation date: 2025-08-27T00:17:42.476477
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_004T05_9000006502_53620cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53620cztM0_level2_quad_clean.evt
Size (bytes)1,124,066,88086,074,560
Size1.0 GB 82.1 MB
Events in quadrant A14,712,761320,538
Events in quadrant B5,891,959747,142
Events in quadrant C11,597,795454,203
Events in quadrant D8,829,983562,810

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488720
B0226072
C0395580
D0314820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7485451360.293921%
B74853154.208417%
C7485282537.742151%
D7485123316.472946%

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 7484 7484 4515 4515 60.33% 60.33%
B 7485 7485 248 248 3.31% 3.31%
C 7484 7484 2719 2719 36.33% 36.33%
D 7485 7485 1245 1245 16.63% 16.63%

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 3 78 7742210 51019.88 607 590 151.7
A 4 95 3500198 23063.59 607 590 151.7
A 15 174 306476 2015.89 607 590 151.7
B 15 20 1014978 5967.61 793 767 170.0
B 10 254 622998 3661.2 793 767 170.0
B 5 172 239162 1402.71 793 767 170.0
C 15 224 4779731 26692.82 646 639 179.0
C 1 241 2869508 16023.59 646 639 179.0
C 13 3 371862 2073.4 646 639 179.0
D 8 176 3133546 14777.57 741 709 212.0
D 10 172 831099 3916.94 741 709 212.0
D 12 34 483900 2279.21 741 709 212.0

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