ASTROSAT CZTI

Data Quality Report

Orbit 18808

Creation date: 2024-06-27T17:55:07.290375
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_173T01_9000002812_18808cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18808cztM0_level2_quad_clean.evt
Size (bytes)504,748,80083,954,880
Size481.4 MB 80.1 MB
Events in quadrant A3,504,049518,883
Events in quadrant B3,857,859519,210
Events in quadrant C3,842,912504,163
Events in quadrant D3,587,397493,431

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149831
B0159991
C0160301
D0154892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7282350.480637%
B7283821.125910%
C72831542.114513%
D7282460.631695%

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 7712 7283 0 0 0.00% 0.00%
B 7713 7284 7 7 0.09% 0.10%
C 7713 7284 2 2 0.03% 0.03%
D 7712 7283 15 15 0.19% 0.21%

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 11 29 14029 71.81 900 881 183.1
A 4 2 13147 66.99 900 881 183.1
A 13 254 12807 65.14 900 881 183.1
B 0 229 109619 630.39 896 874 172.5
B 12 18 52332 298.3 896 874 172.5
B 7 220 50270 286.35 896 874 172.5
C 3 233 320333 1569.75 860 865 203.5
C 14 238 132109 644.89 860 865 203.5
C 9 54 23918 113.27 860 865 203.5
D 7 38 103758 474.95 875 846 216.7
D 12 233 49332 223.77 875 846 216.7
D 7 238 48231 218.69 875 846 216.7

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