ASTROSAT CZTI

Data Quality Report

Orbit 20160922_G05_152T01_9000000676_level2

Creation date: 2025-11-06T15:10:35.055713
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/AS1G05_152T01_9000000676cztM0_level2.fits modeM0/AS1G05_152T01_9000000676cztM0_level2_quad_clean.evt
Size (bytes)380,761,920434,021,760
Size363.1 MB 413.9 MB
Events in quadrant A2,321,7522,754,296
Events in quadrant B2,111,7662,587,816
Events in quadrant C2,318,4362,709,675
Events in quadrant D1,820,7082,138,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0922820
B0884940
C01035180
D01478130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08900
B08920
C09040
D09020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A438988001.822406%
B406199192.262488%
C438896341.444553%
D43271612014.143422%

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 51595 45400 0 0 0.00% 0.00%
B 47509 41651 0 0 0.00% 0.00%
C 51595 45375 0 0 0.00% 0.00%
D 51595 44512 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 14 188 2277 10.84 603 562 158.2
A 0 29 2257 10.71 603 562 158.2
A 7 110 2006 9.13 603 562 158.2
B 2 9 1848 11.48 558 531 114.7
B 12 226 1478 8.26 558 531 114.7
B 14 254 1427 7.81 558 531 114.7
C 12 241 1703 7.02 611 565 162.1
C 1 81 1692 6.95 611 565 162.1
C 1 80 1685 6.91 611 565 162.1
D 3 14 1489 7.16 519 472 142.0
D 11 82 1391 6.47 519 472 142.0
D 6 231 1344 6.14 519 472 142.0

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