ASTROSAT CZTI

Data Quality Report

Orbit 06620

Creation date: 2024-06-27T15:09:39.928875
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/AS1G06_164T01_9000000896_06620cztM0_level2.evt modeM0/AS1G06_164T01_9000000896_06620cztM0_level2_quad_clean.evt
Size (bytes)502,200,00086,546,880
Size478.9 MB 82.5 MB
Events in quadrant A3,154,207540,277
Events in quadrant B3,540,468541,580
Events in quadrant C3,285,237532,456
Events in quadrant D4,744,719509,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014831394
B015732416
C015461413
D019473456

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01462
B01464
C01462
D01464

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7138170.238162%
B7141570.798208%
C7135620.868956%
D71341111.555929%

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 7841 7163 1 1 0.01% 0.01%
B 7841 7168 18 18 0.23% 0.25%
C 7840 7159 53 53 0.68% 0.74%
D 7840 7168 84 84 1.07% 1.17%

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 8 15 46988 280.59 804 784 164.7
A 14 111 12163 69.1 804 784 164.7
A 0 226 7527 40.95 804 784 164.7
B 0 219 111196 713.53 807 787 154.7
B 15 204 85697 548.74 807 787 154.7
B 4 48 79388 507.96 807 787 154.7
C 9 54 257583 1443.72 769 771 177.9
C 8 128 10831 56.55 769 771 177.9
C 1 16 7063 35.37 769 771 177.9
D 8 195 1221033 6423.61 770 744 190.0
D 2 33 280920 1474.85 770 744 190.0
D 14 34 150409 787.84 770 744 190.0

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