ASTROSAT CZTI

Data Quality Report

Orbit 03825

Creation date: 2024-06-27T14:34:02.676131
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/AS1G05_189T01_9000000492_03825cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03825cztM0_level2_quad_clean.evt
Size (bytes)659,067,84067,363,200
Size628.5 MB 64.2 MB
Events in quadrant A5,184,956383,884
Events in quadrant B6,431,134376,483
Events in quadrant C3,766,772370,434
Events in quadrant D4,045,062363,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208554
B0243443
C0167133
D0177673

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12247644991680
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A784080110.216837%
B7840103413.188776%
C78402883.673469%
D78403574.553571%

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 7870 7841 347 347 4.41% 4.43%
B 7870 7841 522 522 6.63% 6.66%
C 7870 7841 4 4 0.05% 0.05%
D 7870 7842 125 125 1.59% 1.59%

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 15 234 900579 4667.03 933 911 192.8
A 0 199 600424 3109.97 933 911 192.8
A 0 226 62006 316.93 933 911 192.8
B 10 16 2172492 11848.47 920 898 183.3
B 15 204 555047 3023.5 920 898 183.3
B 14 167 72996 393.37 920 898 183.3
C 9 247 50590 228.32 923 925 217.5
C 2 53 37541 168.33 923 925 217.5
C 10 65 31275 139.53 923 925 217.5
D 13 105 178097 785.24 923 898 225.7
D 14 34 166832 735.32 923 898 225.7
D 10 98 106013 465.81 923 898 225.7

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