ASTROSAT CZTI

Data Quality Report

Orbit 08644

Creation date: 2024-06-27T15:35:23.219811
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/AS1G07_024T01_9000001206_08644cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08644cztM0_level2_quad_clean.evt
Size (bytes)497,214,720131,552,640
Size474.2 MB 125.5 MB
Events in quadrant A3,236,819865,198
Events in quadrant B3,493,389893,827
Events in quadrant C3,984,943870,963
Events in quadrant D3,837,037836,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152333
B0156032
C0173692
D0170872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7439801.075413%
B74391131.519021%
C74392753.696733%
D74391982.661648%

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 8879 7441 7 7 0.08% 0.09%
B 8879 7441 3 3 0.03% 0.04%
C 8879 7441 210 210 2.37% 2.82%
D 8879 7441 156 156 1.76% 2.10%

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 15 174 37373 216.67 829 808 168.8
A 0 226 7753 41.15 829 808 168.8
A 12 194 7269 38.28 829 808 168.8
B 4 48 72307 445.86 845 823 160.3
B 0 219 44191 270.49 845 823 160.3
B 0 214 42207 258.12 845 823 160.3
C 4 254 809548 4349.41 809 813 185.9
C 4 222 6390 29.99 809 813 185.9
C 13 61 6306 29.54 809 813 185.9
D 0 11 596873 3050.83 801 776 195.4
D 7 71 40151 201.52 801 776 195.4
D 12 233 32901 164.42 801 776 195.4

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