ASTROSAT CZTI

Data Quality Report

Orbit 20326

Creation date: 2024-06-27T18:13:55.625257
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_174T01_9000003008_20326cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20326cztM0_level2_quad_clean.evt
Size (bytes)518,492,16095,054,400
Size494.5 MB 90.7 MB
Events in quadrant A3,569,133590,206
Events in quadrant B4,262,268602,595
Events in quadrant C3,655,903586,096
Events in quadrant D3,705,799578,063

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155532
B0173732
C0155672
D0160822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74913034.044854%
B74914806.407689%
C74923094.124399%
D74922853.804058%

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 7641 7492 0 0 0.00% 0.00%
B 7641 7492 120 120 1.57% 1.60%
C 7642 7494 0 0 0.00% 0.00%
D 7642 7493 17 17 0.22% 0.23%

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 4 2 20519 104.85 918 895 187.2
A 13 254 11055 54.28 918 895 187.2
A 0 226 7927 37.57 918 895 187.2
B 4 142 392207 2241.1 902 881 174.6
B 7 220 227518 1297.94 902 881 174.6
B 3 64 28539 158.4 902 881 174.6
C 14 238 136053 649.38 888 893 208.1
C 3 9 25288 117.21 888 893 208.1
C 10 91 14925 67.42 888 893 208.1
D 1 52 137458 610.42 911 883 223.7
D 9 1 108425 480.66 911 883 223.7
D 2 234 32950 143.32 911 883 223.7

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