ASTROSAT CZTI

Data Quality Report

Orbit 03227

Creation date: 2024-06-27T14:26:04.483104
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/AS1G05_221T01_9000000438_03227cztM0_level2.evt modeM0/AS1G05_221T01_9000000438_03227cztM0_level2_quad_clean.evt
Size (bytes)513,679,68084,021,120
Size489.9 MB 80.1 MB
Events in quadrant A5,110,489514,973
Events in quadrant B3,618,208539,314
Events in quadrant C3,125,220537,851
Events in quadrant D3,269,261506,323

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193822
B0149051
C0133731
D0141591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639069710.907668%
B6390701.095462%
C6390240.375587%
D6390570.892019%

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 7674 6390 628 628 8.18% 9.83%
B 7675 6391 25 25 0.33% 0.39%
C 7675 6391 11 11 0.14% 0.17%
D 7675 6391 52 52 0.68% 0.81%

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 0 199 1040548 7040.2 721 709 147.7
A 0 50 1003760 6791.13 721 709 147.7
A 0 118 122240 822.82 721 709 147.7
B 15 204 367123 2505.57 779 765 146.2
B 5 200 140257 954.0 779 765 146.2
B 2 249 40301 270.39 779 765 146.2
C 6 80 77916 441.43 751 758 174.8
C 14 223 66061 373.6 751 758 174.8
C 1 192 29710 165.64 751 758 174.8
D 13 223 165846 922.7 735 713 179.0
D 13 120 153904 855.97 735 713 179.0
D 13 239 62522 345.37 735 713 179.0

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