ASTROSAT CZTI

Data Quality Report

Orbit 12025

Creation date: 2024-06-27T16:21:18.300096
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/AS1A04_112T01_9000001778_12025cztM0_level2.evt modeM0/AS1A04_112T01_9000001778_12025cztM0_level2_quad_clean.evt
Size (bytes)555,281,280116,089,920
Size529.6 MB 110.7 MB
Events in quadrant A3,727,174771,559
Events in quadrant B5,046,265761,583
Events in quadrant C3,015,892775,739
Events in quadrant D4,566,100732,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157321
B0195991
C0139151
D0182721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68061301.910079%
B68063715.451073%
C6806490.719953%
D68062533.717308%

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 7812 6807 27 27 0.35% 0.40%
B 7812 6807 216 216 2.76% 3.17%
C 7812 6807 0 0 0.00% 0.00%
D 7812 6807 159 159 2.04% 2.34%

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 13 248 451778 2784.1 795 778 162.0
A 1 162 81840 500.41 795 778 162.0
A 1 178 39722 240.41 795 778 162.0
B 4 239 673065 4514.54 785 767 148.9
B 3 64 418583 2805.67 785 767 148.9
B 10 245 258514 1730.79 785 767 148.9
C 0 207 12266 64.63 769 773 177.8
C 13 61 5788 28.2 769 773 177.8
C 14 234 4926 23.36 769 773 177.8
D 1 52 481157 2621.63 760 738 183.3
D 4 95 293516 1597.68 760 738 183.3
D 13 104 185925 1010.56 760 738 183.3

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