ASTROSAT CZTI

Data Quality Report

Orbit 05480

Creation date: 2024-06-27T14:55:42.053779
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/AS1T01_138T01_9000000698_05480cztM0_level2.evt modeM0/AS1T01_138T01_9000000698_05480cztM0_level2_quad_clean.evt
Size (bytes)1,055,102,400179,107,200
Size1006.2 MB 170.8 MB
Events in quadrant A7,743,4421,092,327
Events in quadrant B7,867,2911,104,660
Events in quadrant C6,754,4521,118,387
Events in quadrant D8,559,5081,059,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336004
B0330833
C0311533
D0356943

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152034232.782346%
B152031881.236598%
C152031601.052424%
D152034873.203315%

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 17258 15206 131 131 0.76% 0.86%
B 17258 15206 10 10 0.06% 0.07%
C 17258 15206 9 9 0.05% 0.06%
D 17258 15206 260 260 1.51% 1.71%

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 869491 2442.28 1742 1702 355.3
A 0 50 155844 433.81 1742 1702 355.3
A 0 226 17466 44.37 1742 1702 355.3
B 15 204 649385 1921.29 1758 1714 337.1
B 11 51 140199 410.81 1758 1714 337.1
B 4 48 95954 279.56 1758 1714 337.1
C 9 247 133643 336.74 1693 1698 391.8
C 13 61 13638 30.47 1693 1698 391.8
C 1 16 10071 21.37 1693 1698 391.8
D 1 239 580872 1412.91 1683 1632 410.0
D 8 195 248620 602.46 1683 1632 410.0
D 2 33 214038 518.11 1683 1632 410.0

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