ASTROSAT CZTI

Data Quality Report

Orbit 20200415_T03_188T01_9000003612_level2

Creation date: 2025-12-10T14:24:50.717033
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/AS1T03_188T01_9000003612cztM0_level2.fits modeM0/AS1T03_188T01_9000003612cztM0_level2_quad_clean.evt
Size (bytes)419,555,520322,830,720
Size400.1 MB 307.9 MB
Events in quadrant A2,702,4341,865,904
Events in quadrant B2,536,2841,841,511
Events in quadrant C2,436,8401,673,218
Events in quadrant D2,212,7441,578,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0867200
B0973270
C01225710
D01274380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08360
B08360
C08360
D08360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A410124121.004584%
B4101214403.511167%
C41012448810.943139%
D4101214463.525797%

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 48412 41010 0 0 0.00% 0.00%
B 48412 40996 0 0 0.00% 0.00%
C 48412 41011 0 0 0.00% 0.00%
D 48412 41010 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 2606 11.26 704 665 172.3
A 7 110 2071 8.16 704 665 172.3
A 9 19 1990 7.69 704 665 172.3
B 2 9 1994 10.24 672 646 131.7
B 5 255 1658 7.68 672 646 131.7
B 2 8 1649 7.62 672 646 131.7
C 1 81 1862 7.7 643 605 163.1
C 1 80 1856 7.67 643 605 163.1
C 12 241 1724 6.86 643 605 163.1
D 15 46 1601 6.17 631 576 166.0
D 10 189 1570 5.99 631 576 166.0
D 6 231 1545 5.84 631 576 166.0

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