ASTROSAT CZTI

Data Quality Report

Orbit 33845

Creation date: 2024-06-27T20:53:17.745396
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_065T07_9000004828_33845cztM0_level2.evt modeM0/AS1A11_065T07_9000004828_33845cztM0_level2_quad_clean.evt
Size (bytes)495,083,52078,603,840
Size472.1 MB 75.0 MB
Events in quadrant A2,858,598515,130
Events in quadrant B3,027,564512,378
Events in quadrant C3,402,249510,325
Events in quadrant D5,363,773488,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114273
B0120632
C0134032
D0194032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5045561.110010%
B50451442.854311%
C50451362.695738%
D50454649.197225%

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 7107 5046 60 60 0.84% 1.19%
B 7107 5046 107 107 1.51% 2.12%
C 7107 5046 115 115 1.62% 2.28%
D 7107 5046 390 390 5.49% 7.73%

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 0 254 319527 2547.35 626 615 125.2
A 15 169 89347 708.76 626 615 125.2
A 13 6 18456 142.51 626 615 125.2
B 5 172 450344 3839.28 619 604 117.1
B 5 200 43334 364.77 619 604 117.1
B 0 190 42842 360.57 619 604 117.1
C 9 187 292769 2076.8 610 617 140.7
C 15 214 218725 1550.45 610 617 140.7
C 14 254 139785 989.29 610 617 140.7
D 12 235 1278249 8696.53 600 586 146.9
D 8 195 1077588 7330.71 600 586 146.9
D 12 233 291201 1978.1 600 586 146.9

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