ASTROSAT CZTI

Data Quality Report

Orbit 35424

Creation date: 2022-04-20T20:46:46.766435
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_097T07_9000005072_35424cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35424cztM0_level2_quad_clean.evt
Size (bytes)691,879,68060,517,440
Size659.8 MB 57.7 MB
Events in quadrant A2,707,742417,804
Events in quadrant B10,745,900226,934
Events in quadrant C3,467,723409,422
Events in quadrant D3,657,347389,174

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113503
B0357112
C0135262
D0144782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A554160.108284%
B5541344662.190940%
C55411472.652951%
D55411152.075438%

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 9516 5543 0 0 0.00% 0.00%
B 9516 5543 2933 2933 30.82% 52.91%
C 9516 5543 122 122 1.28% 2.20%
D 9516 5543 85 85 0.89% 1.53%

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 10 83 131876 984.22 663 649 133.3
A 13 6 11743 83.21 663 649 133.3
A 13 254 8334 57.64 663 649 133.3
B 4 251 4617964 50663.34 471 459 91.1
B 5 14 1037199 11375.13 471 459 91.1
B 5 31 1027520 11268.93 471 459 91.1
C 0 10 363279 2426.2 636 638 149.5
C 0 207 340055 2270.82 636 638 149.5
C 15 214 226957 1514.15 636 638 149.5
D 7 80 328614 2094.48 637 619 156.6
D 8 195 286901 1828.12 637 619 156.6
D 2 250 225095 1433.44 637 619 156.6

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