ASTROSAT CZTI

Data Quality Report

Orbit 21295

Creation date: 2024-06-27T18:26:03.260411
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/AS1T03_140T01_9000003142_21295cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21295cztM0_level2_quad_clean.evt
Size (bytes)573,586,56095,333,760
Size547.0 MB 90.9 MB
Events in quadrant A3,447,864627,378
Events in quadrant B3,521,059635,979
Events in quadrant C3,690,442613,155
Events in quadrant D6,248,368533,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147032
B0148582
C0154912
D0232952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6843670.979103%
B68441121.636470%
C68441462.133255%
D684496914.158387%

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 8708 6844 9 9 0.10% 0.13%
B 8709 6845 19 19 0.22% 0.28%
C 8709 6846 2 2 0.02% 0.03%
D 8709 6846 870 870 9.99% 12.71%

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 9 143 158635 914.16 847 829 172.6
A 5 16 11503 61.83 847 829 172.6
A 13 254 9706 51.42 847 829 172.6
B 0 190 70277 424.93 844 823 163.4
B 3 64 65201 393.87 844 823 163.4
B 6 36 25465 150.76 844 823 163.4
C 3 233 420969 2214.22 803 809 189.8
C 14 238 125353 656.34 803 809 189.8
C 0 10 14624 72.8 803 809 189.8
D 1 52 2175946 11950.7 745 721 182.0
D 7 38 883667 4850.91 745 721 182.0
D 12 235 98889 539.34 745 721 182.0

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