ASTROSAT CZTI

Data Quality Report

Orbit 34840

Creation date: 2022-03-09T03:49:11.939758
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/AS1C07_005T01_9000004992_34840cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34840cztM0_level2_quad_clean.evt
Size (bytes)569,603,52092,589,120
Size543.2 MB 88.3 MB
Events in quadrant A5,662,555608,891
Events in quadrant B4,555,494620,735
Events in quadrant C3,061,289615,809
Events in quadrant D3,615,446589,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205413
B0169462
C0120522
D0142472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52574839.187750%
B525767712.878067%
C52571542.929427%
D52571693.214761%

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 7140 5258 441 441 6.18% 8.39%
B 7140 5258 568 568 7.96% 10.80%
C 7140 5258 120 120 1.68% 2.28%
D 7140 5258 160 160 2.24% 3.04%

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 3209939 26678.18 610 600 120.3
A 10 83 47771 392.12 610 600 120.3
A 15 237 28583 232.61 610 600 120.3
B 5 172 1120157 10012.89 601 587 111.8
B 5 31 262537 2342.75 601 587 111.8
B 5 15 260849 2327.66 601 587 111.8
C 0 10 365380 2660.21 599 604 137.1
C 15 214 238928 1738.03 599 604 137.1
C 0 207 47980 345.5 599 604 137.1
D 8 195 571215 3716.65 593 579 153.5
D 13 249 292087 1898.64 593 579 153.5
D 10 118 113832 737.63 593 579 153.5

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