ASTROSAT CZTI

Data Quality Report

Orbit 27950

Creation date: 2024-06-27T19:46:18.681592
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/AS1A10_016T01_9000004034_27950cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27950cztM0_level2_quad_clean.evt
Size (bytes)584,069,76092,105,280
Size557.0 MB 87.8 MB
Events in quadrant A3,223,118613,341
Events in quadrant B3,438,824622,904
Events in quadrant C3,638,268591,603
Events in quadrant D6,988,856548,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129140
B0138240
C0144980
D0251020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5899761.288354%
B5900751.271186%
C59001903.220339%
D590092215.627119%

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 7184 5899 0 0 0.00% 0.00%
B 7185 5900 4 4 0.06% 0.07%
C 7185 5900 52 52 0.72% 0.88%
D 7185 5900 897 897 12.48% 15.20%

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 9438 51.83 835 822 166.2
A 0 226 7188 38.3 835 822 166.2
A 3 137 7146 38.04 835 822 166.2
B 10 245 137654 907.2 818 802 150.9
B 0 230 49634 323.71 818 802 150.9
B 12 111 17955 113.71 818 802 150.9
C 3 233 364419 1978.0 797 807 183.8
C 14 238 135073 730.39 797 807 183.8
C 2 16 20033 104.59 797 807 183.8
D 7 80 2155831 11643.74 781 762 185.1
D 1 52 791462 4272.12 781 762 185.1
D 8 195 758528 4094.18 781 762 185.1

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