ASTROSAT CZTI

Data Quality Report

Orbit 17902

Creation date: 2024-06-27T17:42:24.095592
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_109T01_9000002662_17902cztM0_level2.evt modeM0/AS1A05_109T01_9000002662_17902cztM0_level2_quad_clean.evt
Size (bytes)464,431,68069,690,240
Size442.9 MB 66.5 MB
Events in quadrant A3,232,183418,710
Events in quadrant B3,404,492426,390
Events in quadrant C3,313,479410,323
Events in quadrant D3,677,930405,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138632
B0144402
C0140792
D0152922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6443560.869160%
B6443711.101971%
C6443891.381344%
D6443781.210616%

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 7598 6444 0 0 0.00% 0.00%
B 7598 6443 2 2 0.03% 0.03%
C 7598 6443 0 0 0.00% 0.00%
D 7598 6444 28 28 0.37% 0.43%

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 15 174 11190 60.97 838 821 170.1
A 0 226 7319 38.21 838 821 170.1
A 3 137 6188 31.56 838 821 170.1
B 4 216 42436 261.2 840 821 159.3
B 0 189 35044 214.8 840 821 159.3
B 12 111 18181 108.96 840 821 159.3
C 14 238 126969 663.71 814 822 190.1
C 3 233 6263 28.63 814 822 190.1
C 13 61 5731 25.83 814 822 190.1
D 12 110 330991 1634.65 826 803 202.0
D 13 168 76687 375.68 826 803 202.0
D 10 70 76648 375.48 826 803 202.0

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