ASTROSAT CZTI

Data Quality Report

Orbit 02521

Creation date: 2024-06-27T14:19:00.314811
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/AS1T01_103T01_9000000374_02521cztM0_level2.evt modeM0/AS1T01_103T01_9000000374_02521cztM0_level2_quad_clean.evt
Size (bytes)655,436,16061,770,240
Size625.1 MB 58.9 MB
Events in quadrant A3,309,065369,691
Events in quadrant B4,232,684369,891
Events in quadrant C3,115,644366,654
Events in quadrant D8,711,261268,852

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149543
B0175982
C0145802
D0307152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70891662.341656%
B70892293.230357%
C70891051.481168%
D7089227832.134293%

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 7834 7090 1 1 0.01% 0.01%
B 7834 7090 7 7 0.09% 0.10%
C 7834 7090 1 1 0.01% 0.01%
D 7834 7089 1544 1544 19.71% 21.78%

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 15 236 138445 809.51 820 799 170.0
A 0 226 9416 50.68 820 799 170.0
A 12 194 8932 47.83 820 799 170.0
B 6 36 981564 6128.17 824 803 160.0
B 7 205 44342 272.05 824 803 160.0
B 5 251 13406 78.75 824 803 160.0
C 12 4 7744 37.4 791 792 185.9
C 13 61 7106 33.97 791 792 185.9
C 1 3 5972 27.87 791 792 185.9
D 11 130 6009557 39547.97 638 622 151.9
D 11 131 204108 1339.25 638 622 151.9
D 7 67 33928 219.2 638 622 151.9

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