ASTROSAT CZTI

Data Quality Report

Orbit 32771

Creation date: 2024-06-27T20:41:50.879054
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/AS1T04_064T01_9000004730_32771cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32771cztM0_level2_quad_clean.evt
Size (bytes)560,485,44060,557,760
Size534.5 MB 57.8 MB
Events in quadrant A3,877,945363,836
Events in quadrant B3,134,980387,315
Events in quadrant C2,865,627385,838
Events in quadrant D6,752,692340,183

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147973
B0126142
C0113132
D0235952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50801953.838583%
B5080531.043307%
C5080561.102362%
D508063912.578740%

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 7113 5081 138 138 1.94% 2.72%
B 7113 5081 29 29 0.41% 0.57%
C 7113 5081 40 40 0.56% 0.79%
D 7113 5081 586 586 8.24% 11.53%

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 15 237 382261 2833.53 681 671 134.7
A 7 16 374535 2776.16 681 671 134.7
A 12 16 345332 2559.31 681 671 134.7
B 5 172 116468 894.66 694 681 129.4
B 0 219 101566 779.52 694 681 129.4
B 12 1 63489 485.3 694 681 129.4
C 0 10 210291 1375.17 669 676 152.4
C 14 67 15272 95.76 669 676 152.4
C 3 233 6856 40.54 669 676 152.4
D 8 195 2381202 14494.73 635 624 164.2
D 7 80 657291 3998.28 635 624 164.2
D 2 249 389195 2365.91 635 624 164.2

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