ASTROSAT CZTI

Data Quality Report

Orbit 18756

Creation date: 2024-06-27T17:54:25.639752
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/AS1A05_156T01_9000002804_18756cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18756cztM0_level2_quad_clean.evt
Size (bytes)452,459,52088,611,840
Size431.5 MB 84.5 MB
Events in quadrant A3,290,463562,854
Events in quadrant B3,488,088569,722
Events in quadrant C3,248,309543,439
Events in quadrant D3,221,639541,446

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138732
B0144082
C0137612
D0138783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6682510.763245%
B6682600.897935%
C6682681.017659%
D6681330.493938%

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 7812 6683 0 0 0.00% 0.00%
B 7812 6683 4 4 0.05% 0.06%
C 7812 6683 0 0 0.00% 0.00%
D 7811 6682 9 9 0.12% 0.13%

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 13 254 10562 57.84 848 831 168.2
A 11 29 7416 39.14 848 831 168.2
A 0 226 7326 38.61 848 831 168.2
B 10 245 106247 664.88 840 819 158.6
B 3 64 50016 310.26 840 819 158.6
B 12 111 19150 115.6 840 819 158.6
C 14 238 126077 673.94 800 804 185.9
C 13 61 5710 26.39 800 804 185.9
C 3 233 3668 15.41 800 804 185.9
D 1 52 68932 344.58 819 795 197.7
D 7 96 37490 185.57 819 795 197.7
D 2 234 25685 125.87 819 795 197.7

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