ASTROSAT CZTI

Data Quality Report

Orbit 06937

Creation date: 2024-06-27T15:13:25.802766
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/AS1A02_103T01_9000000950_06937cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06937cztM0_level2_quad_clean.evt
Size (bytes)1,007,112,96079,064,640
Size960.5 MB 75.4 MB
Events in quadrant A3,307,029561,971
Events in quadrant B4,988,358562,722
Events in quadrant C16,303,352248,304
Events in quadrant D5,417,358519,764

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148522
B0200181
C0533431
D0209661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7175450.627178%
B71755057.038328%
C7175639089.059233%
D717586512.055749%

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 7360 7176 1 1 0.01% 0.01%
B 7360 7176 65 65 0.88% 0.91%
C 7360 7175 5194 5194 70.57% 72.39%
D 7360 7176 587 587 7.98% 8.18%

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 13 248 15150 82.55 849 832 173.4
A 8 15 10653 56.63 849 832 173.4
A 0 226 8155 42.22 849 832 173.4
B 0 228 1451771 8987.28 841 820 161.4
B 4 48 121049 744.71 841 820 161.4
B 4 81 88821 545.08 841 820 161.4
C 9 247 14988166 194352.4 330 332 77.1
C 10 22 11739 147.92 330 332 77.1
C 8 128 4735 57.1 330 332 77.1
D 1 20 1463906 7472.08 791 766 195.8
D 8 195 515182 2627.06 791 766 195.8
D 2 136 204789 1041.92 791 766 195.8

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