ASTROSAT CZTI

Data Quality Report

Orbit 27678

Creation date: 2024-06-27T19:42:54.461405
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_257T01_9000003976_27678cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27678cztM0_level2_quad_clean.evt
Size (bytes)516,329,28081,515,520
Size492.4 MB 77.7 MB
Events in quadrant A3,310,710510,760
Events in quadrant B3,488,618527,721
Events in quadrant C3,485,387491,934
Events in quadrant D4,892,779465,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140090
B0144910
C0144480
D0191570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6780380.560472%
B6780650.958702%
C6780861.268437%
D67802093.082596%

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 7880 6781 2 2 0.03% 0.03%
B 7880 6780 15 15 0.19% 0.22%
C 7880 6780 13 13 0.16% 0.19%
D 7880 6781 152 152 1.93% 2.24%

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 8 192 12572 68.11 851 836 172.3
A 13 254 11444 61.56 851 836 172.3
A 15 174 9061 47.73 851 836 172.3
B 3 64 95381 580.08 855 833 163.0
B 0 230 22670 133.98 855 833 163.0
B 12 111 19465 114.31 855 833 163.0
C 14 238 133899 692.41 819 823 192.2
C 3 233 82197 423.4 819 823 192.2
C 8 208 70477 362.42 819 823 192.2
D 1 52 802438 4111.25 811 790 195.0
D 12 2 767421 3931.67 811 790 195.0
D 2 250 144089 734.91 811 790 195.0

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