ASTROSAT CZTI

Data Quality Report

Orbit 14755

Creation date: 2024-06-27T16:59:07.591018
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_203T01_9000002180_14755cztM0_level2.evt modeM0/AS1A04_203T01_9000002180_14755cztM0_level2_quad_clean.evt
Size (bytes)719,812,80096,477,120
Size686.5 MB 92.0 MB
Events in quadrant A8,411,948578,765
Events in quadrant B4,664,953611,375
Events in quadrant C4,478,508602,706
Events in quadrant D3,725,720595,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302614
B0189832
C0183002
D0165542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7663146019.052590%
B76634045.272087%
C76631261.644265%
D7663931.213624%

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 8284 7663 930 930 11.23% 12.14%
B 8285 7665 171 171 2.06% 2.23%
C 8284 7663 13 13 0.16% 0.17%
D 8284 7665 17 17 0.21% 0.22%

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 4736017 26230.44 883 862 180.5
A 0 23 167779 924.64 883 862 180.5
A 12 189 89302 489.91 883 862 180.5
B 10 16 874444 4845.68 929 904 180.3
B 0 229 60062 328.16 929 904 180.3
B 4 142 30844 166.08 929 904 180.3
C 3 233 733537 3424.21 913 918 214.0
C 4 254 133279 618.64 913 918 214.0
C 0 207 23868 107.26 913 918 214.0
D 2 136 109814 442.96 907 887 245.9
D 13 172 54638 218.58 907 887 245.9
D 2 234 30834 121.78 907 887 245.9

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