ASTROSAT CZTI

Data Quality Report

Orbit 23725

Creation date: 2024-06-27T18:57:59.044800
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/AS1A07_027T06_9000003508_23725cztM0_level2.evt modeM0/AS1A07_027T06_9000003508_23725cztM0_level2_quad_clean.evt
Size (bytes)523,693,44075,335,040
Size499.4 MB 71.8 MB
Events in quadrant A3,280,519464,601
Events in quadrant B3,711,677476,431
Events in quadrant C3,728,638456,138
Events in quadrant D4,699,341431,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135042
B0148282
C0148912
D0182832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6498150.230840%
B6498530.815636%
C6498911.400431%
D64981552.385349%

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 7818 6499 0 0 0.00% 0.00%
B 7818 6499 8 8 0.10% 0.12%
C 7818 6499 11 11 0.14% 0.17%
D 7818 6499 119 119 1.52% 1.83%

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 13 254 11454 62.43 851 836 170.1
A 0 226 7487 39.11 851 836 170.1
A 3 137 7247 37.7 851 836 170.1
B 0 229 147209 912.73 857 838 160.4
B 15 33 90304 557.88 857 838 160.4
B 0 189 42008 256.72 857 838 160.4
C 10 9 358522 1881.02 823 831 190.2
C 14 238 132609 692.99 823 831 190.2
C 7 247 16355 81.64 823 831 190.2
D 1 52 894556 4531.29 816 795 197.2
D 7 238 367160 1857.44 816 795 197.2
D 13 174 297301 1503.26 816 795 197.2

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