ASTROSAT CZTI

Data Quality Report

Orbit 17696

Creation date: 2024-06-27T17:39:35.988927
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/AS1A05_084T06_9000002626_17696cztM0_level2.evt modeM0/AS1A05_084T06_9000002626_17696cztM0_level2_quad_clean.evt
Size (bytes)264,176,64037,111,680
Size251.9 MB 35.4 MB
Events in quadrant A2,067,221218,153
Events in quadrant B1,979,444219,791
Events in quadrant C1,866,627211,519
Events in quadrant D1,831,087208,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085481
B081661
C077561
D078751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37421333.554249%
B3742401.068947%
C3742381.015500%
D3742120.320684%

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 4582 3743 82 82 1.79% 2.19%
B 4582 3743 4 4 0.09% 0.11%
C 4582 3743 0 0 0.00% 0.00%
D 4582 3743 7 7 0.15% 0.19%

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 292977 3080.71 461 452 95.0
A 0 226 4009 37.46 461 452 95.0
A 3 137 3568 32.82 461 452 95.0
B 0 229 88821 952.14 468 456 92.8
B 10 245 42694 455.12 468 456 92.8
B 0 189 20178 212.51 468 456 92.8
C 14 238 69190 642.06 447 449 107.1
C 3 233 37972 350.48 447 449 107.1
C 5 218 12625 113.73 447 449 107.1
D 7 238 44687 363.84 451 440 121.6
D 10 70 33141 268.9 451 440 121.6
D 1 52 16473 131.84 451 440 121.6

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