ASTROSAT CZTI

Data Quality Report

Orbit 31666

Creation date: 2024-06-27T20:31:17.568826
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/AS1A10_056T01_9000004626_31666cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31666cztM0_level2_quad_clean.evt
Size (bytes)549,671,04072,385,920
Size524.2 MB 69.0 MB
Events in quadrant A3,352,657439,824
Events in quadrant B5,456,742438,130
Events in quadrant C3,653,853416,619
Events in quadrant D3,715,492416,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143322
B0212314
C0149432
D0153662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6898991.435199%
B68981722.493476%
C68981902.754422%
D68981121.623659%

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 8548 6900 0 0 0.00% 0.00%
B 8548 6900 10 10 0.12% 0.14%
C 8548 6900 50 50 0.58% 0.72%
D 8548 6900 38 38 0.44% 0.55%

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 15 174 14954 82.02 862 844 172.0
A 13 254 11871 64.1 862 844 172.0
A 3 137 8905 46.86 862 844 172.0
B 6 159 1817895 11073.03 849 829 164.1
B 0 190 93258 563.25 849 829 164.1
B 3 209 63167 379.88 849 829 164.1
C 0 10 247136 1300.62 811 816 189.4
C 14 238 131531 690.2 811 816 189.4
C 3 233 44515 230.74 811 816 189.4
D 8 195 386603 1942.08 832 806 198.7
D 13 249 101790 508.35 832 806 198.7
D 2 250 42556 210.17 832 806 198.7

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