ASTROSAT CZTI

Data Quality Report

Orbit 46237

Creation date: 2024-06-27T23:20:40.590297
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/AS1A13_065T07_9000006188_46237cztM0_level2.fits modeM0/AS1A13_065T07_9000006188_46237cztM0_level2_quad_clean.evt
Size (bytes)642,375,360144,561,600
Size612.6 MB 137.9 MB
Events in quadrant A8,599,726947,715
Events in quadrant B4,844,026996,925
Events in quadrant C4,188,573961,133
Events in quadrant D5,435,528834,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312811
B0201971
C0191221
D0226591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91683543.861257%
B91681882.050611%
C91681431.559773%
D91695656.162068%

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 10483 9168 18 18 0.17% 0.20%
B 10483 9168 18 18 0.17% 0.20%
C 10483 9168 26 26 0.25% 0.28%
D 10484 9169 260 260 2.48% 2.84%

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 10 83 3991041 18639.93 1028 1005 214.1
A 0 247 341339 1589.91 1028 1005 214.1
A 7 3 126647 586.95 1028 1005 214.1
B 3 112 675960 3323.45 1025 988 203.1
B 5 32 43249 208.09 1025 988 203.1
B 12 111 26757 126.88 1025 988 203.1
C 12 2 110603 459.56 1016 1022 238.4
C 1 3 91822 380.79 1016 1022 238.4
C 3 9 19469 77.36 1016 1022 238.4
D 1 52 747880 3028.49 988 955 246.6
D 5 33 280813 1134.72 988 955 246.6
D 2 249 260723 1053.26 988 955 246.6

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