ASTROSAT CZTI

Data Quality Report

Orbit 16018

Creation date: 2024-06-27T17:16:51.288172
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/AS1T02_091T01_9000002368_16018cztM0_level2.evt modeM0/AS1T02_091T01_9000002368_16018cztM0_level2_quad_clean.evt
Size (bytes)411,508,80083,730,240
Size392.4 MB 79.9 MB
Events in quadrant A2,968,732535,503
Events in quadrant B3,041,151543,122
Events in quadrant C3,148,108519,442
Events in quadrant D2,889,424511,323

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125332
B0126721
C0130141
D0125021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6105460.753481%
B6105490.802621%
C6105721.179361%
D6105310.507781%

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 7091 6106 2 2 0.03% 0.03%
B 7091 6106 5 5 0.07% 0.08%
C 7091 6106 5 5 0.07% 0.08%
D 7091 6106 1 1 0.01% 0.02%

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 12 96 16836 104.77 762 748 153.5
A 9 143 13044 80.08 762 748 153.5
A 0 226 6618 38.23 762 748 153.5
B 4 216 33395 224.14 755 738 145.7
B 12 111 16474 108.0 755 738 145.7
B 7 220 14504 94.48 755 738 145.7
C 3 233 197378 1157.51 722 729 169.9
C 14 238 112233 656.33 722 729 169.9
C 7 247 21384 121.58 722 729 169.9
D 2 152 57750 313.93 738 717 181.7
D 2 234 23431 125.03 738 717 181.7
D 2 14 21900 116.6 738 717 181.7

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