ASTROSAT CZTI

Data Quality Report

Orbit 20170209_G06_138T01_9000001020_level2

Creation date: 2025-11-09T13:34:03.050527
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/AS1G06_138T01_9000001020cztM0_level2.fits modeM0/AS1G06_138T01_9000001020cztM0_level2_quad_clean.evt
Size (bytes)386,193,600360,397,440
Size368.3 MB 343.7 MB
Events in quadrant A2,305,6642,089,621
Events in quadrant B2,211,9182,055,904
Events in quadrant C2,291,7962,013,980
Events in quadrant D1,982,1681,851,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0874610
B0872700
C0948110
D0992180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08680
B08680
C08680
D08680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A424946931.630818%
B416357561.815780%
C424945011.178990%
D4249312342.904008%

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 51162 42494 0 0 0.00% 0.00%
B 50302 41632 0 0 0.00% 0.00%
C 51162 42494 0 0 0.00% 0.00%
D 51162 42489 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 2187 10.55 599 557 154.5
A 7 110 1896 8.67 599 557 154.5
A 0 30 1727 7.58 599 557 154.5
B 2 9 1930 11.63 581 549 118.7
B 5 128 1516 8.15 581 549 118.7
B 3 17 1515 8.14 581 549 118.7
C 1 80 1655 6.76 605 558 162.4
C 12 241 1625 6.57 605 558 162.4
C 1 81 1617 6.52 605 558 162.4
D 3 14 1506 6.48 564 510 153.6
D 7 5 1470 6.25 564 510 153.6
D 1 19 1464 6.21 564 510 153.6

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