ASTROSAT CZTI

Data Quality Report

Orbit 35151

Creation date: 2022-03-30T05:22:02.348866
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/AS1A11_069T01_9000005034_35151cztM0_level2.evt modeM0/AS1A11_069T01_9000005034_35151cztM0_level2_quad_clean.evt
Size (bytes)773,015,04073,558,080
Size737.2 MB 70.2 MB
Events in quadrant A3,882,429483,433
Events in quadrant B9,351,381374,523
Events in quadrant C3,397,498488,475
Events in quadrant D6,366,259452,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153883
B0319642
C0138052
D0232942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61262914.750245%
B6126276845.184460%
C6126691.126347%
D61265208.488410%

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 8932 6128 223 223 2.50% 3.64%
B 8931 6126 1802 1802 20.18% 29.42%
C 8932 6128 56 56 0.63% 0.91%
D 8932 6128 497 497 5.56% 8.11%

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 15 169 1013577 7115.79 704 690 142.3
A 10 83 94248 657.27 704 690 142.3
A 9 143 33504 230.53 704 690 142.3
B 5 236 6758411 60573.92 570 554 111.6
B 5 172 293330 2624.29 570 554 111.6
B 4 232 34819 307.13 570 554 111.6
C 0 10 304480 1854.03 698 703 163.8
C 15 214 259202 1577.69 698 703 163.8
C 0 207 74649 451.31 698 703 163.8
D 8 195 1874637 11191.86 681 664 167.4
D 5 223 561219 3347.78 681 664 167.4
D 13 249 383869 2288.6 681 664 167.4

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