ASTROSAT CZTI

Data Quality Report

Orbit 27975

Creation date: 2024-06-27T19:46:39.324055
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_065T03_9000004040_27975cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27975cztM0_level2_quad_clean.evt
Size (bytes)545,705,28090,529,920
Size520.4 MB 86.3 MB
Events in quadrant A3,541,178580,444
Events in quadrant B3,606,470574,558
Events in quadrant C3,659,874543,222
Events in quadrant D5,233,600544,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148390
B0150750
C0152100
D0204760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7174470.655144%
B7175650.905923%
C71751021.421603%
D71741842.564817%

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 9039 7175 2 2 0.02% 0.03%
B 9040 7175 0 0 0.00% 0.00%
C 9040 7175 0 0 0.00% 0.00%
D 9039 7174 121 121 1.34% 1.69%

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 8 192 11722 58.51 914 895 185.0
A 13 254 11048 54.87 914 895 185.0
A 3 137 8853 43.01 914 895 185.0
B 10 245 52840 296.79 906 883 175.1
B 12 111 21946 120.32 906 883 175.1
B 11 111 20071 109.61 906 883 175.1
C 14 238 141110 678.39 881 889 206.7
C 3 233 78408 375.04 881 889 206.7
C 2 16 10583 46.9 881 889 206.7
D 1 52 1040142 4946.16 885 864 210.1
D 8 195 797609 3791.89 885 864 210.1
D 7 80 44720 208.72 885 864 210.1

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