ASTROSAT CZTI

Data Quality Report

Orbit 20007

Creation date: 2024-06-27T18:10:00.505548
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/AS1A06_002T02_9000002982_20007cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_20007cztM0_level2_quad_clean.evt
Size (bytes)593,089,920101,154,240
Size565.6 MB 96.5 MB
Events in quadrant A4,752,426639,646
Events in quadrant B4,001,507650,734
Events in quadrant C4,224,272621,905
Events in quadrant D4,466,577620,787

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190672
B0167452
C0172313
D0182612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76253274.288525%
B76262072.714398%
C76252353.081967%
D76253224.222951%

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 9090 7627 172 172 1.89% 2.26%
B 9091 7628 11 11 0.12% 0.14%
C 9090 7627 11 11 0.12% 0.14%
D 9090 7627 83 83 0.91% 1.09%

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 14 238 690645 3586.43 951 928 192.3
A 14 254 356749 1850.22 951 928 192.3
A 13 252 20538 101.97 951 928 192.3
B 7 220 105114 570.42 953 928 182.6
B 0 230 40168 214.84 953 928 182.6
B 0 197 33401 177.79 953 928 182.6
C 9 221 237788 1108.3 918 922 213.7
C 0 207 177753 827.39 918 922 213.7
C 14 238 142376 661.86 918 922 213.7
D 12 218 400117 1778.11 926 900 224.5
D 1 52 359517 1597.28 926 900 224.5
D 7 96 92694 408.85 926 900 224.5

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