ASTROSAT CZTI

Data Quality Report

Orbit 23243

Creation date: 2024-06-27T18:51:43.580636
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/AS1A08_004T02_9000003436_23243cztM0_level2.evt modeM0/AS1A08_004T02_9000003436_23243cztM0_level2_quad_clean.evt
Size (bytes)555,336,000136,627,200
Size529.6 MB 130.3 MB
Events in quadrant A3,308,966941,326
Events in quadrant B3,397,376957,104
Events in quadrant C4,726,697889,749
Events in quadrant D4,927,457879,044

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142451
B0144021
C0186611
D0191741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6760530.784024%
B6760670.991124%
C67603805.621302%
D67612814.156190%

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 7845 6760 0 0 0.00% 0.00%
B 7845 6760 5 5 0.06% 0.07%
C 7845 6760 94 94 1.20% 1.39%
D 7846 6761 184 184 2.35% 2.72%

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 6 16 12988 71.02 854 838 171.1
A 13 254 10116 54.23 854 838 171.1
A 0 226 7435 38.56 854 838 171.1
B 3 64 36116 225.07 844 824 156.8
B 10 247 18821 114.77 844 824 156.8
B 12 111 18605 113.39 844 824 156.8
C 8 208 1323893 7149.42 803 808 185.1
C 14 238 129005 692.73 803 808 185.1
C 0 10 98544 528.13 803 808 185.1
D 12 218 911517 4574.05 825 800 199.1
D 7 238 228854 1145.39 825 800 199.1
D 1 52 158984 794.47 825 800 199.1

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