ASTROSAT CZTI

Data Quality Report

Orbit 20180601_G08_083T01_9000002134_level2

Creation date: 2025-11-22T16:51:59.851833
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/AS1G08_083T01_9000002134cztM0_level2.fits modeM0/AS1G08_083T01_9000002134cztM0_level2_quad_clean.evt
Size (bytes)436,187,520475,102,080
Size416.0 MB 453.1 MB
Events in quadrant A2,627,5842,949,583
Events in quadrant B2,546,9122,903,454
Events in quadrant C2,606,2542,790,970
Events in quadrant D2,223,1482,540,044

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980250
B01009610
C0968240
D01109900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09560
B09560
C09560
D09560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4668410932.341273%
B4668410092.161340%
C466846621.418045%
D4668416943.628652%

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 52205 46679 0 0 0.00% 0.00%
B 52205 46683 0 0 0.00% 0.00%
C 52205 46683 0 0 0.00% 0.00%
D 52205 46630 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 2571 11.12 684 641 173.6
A 7 110 2103 8.42 684 641 173.6
A 0 30 2031 8.01 684 641 173.6
B 2 9 2175 11.64 673 644 131.5
B 14 254 1726 8.23 673 644 131.5
B 5 128 1683 7.9 673 644 131.5
C 1 80 1968 7.37 688 639 180.3
C 1 81 1946 7.25 688 639 180.3
C 12 241 1815 6.52 688 639 180.3
D 3 14 1693 6.54 633 574 171.0
D 6 231 1656 6.33 633 574 171.0
D 7 5 1591 5.95 633 574 171.0

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