ASTROSAT CZTI

Data Quality Report

Orbit 00280

Creation date: 2024-06-27T13:58:40.829523
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/AS1P01_126T01_9000000030_00280cztM0_level2.evt modeM0/AS1P01_126T01_9000000030_00280cztM0_level2_quad_clean.evt
Size (bytes)846,944,64055,031,040
Size807.7 MB 52.5 MB
Events in quadrant A6,459,346323,208
Events in quadrant B6,549,148326,126
Events in quadrant C6,055,753315,454
Events in quadrant D6,210,722307,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231753
B0234282
C0220072
D0224772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A563130.053277%
B563110.017759%
C563130.053277%
D5631520.923459%

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 7336 5632 98 98 1.34% 1.74%
B 7336 5632 83 83 1.13% 1.47%
C 7336 5632 43 43 0.59% 0.76%
D 7336 5632 164 164 2.24% 2.91%

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 15 127 42813 114.06 1641 1627 361.1
A 8 65 29728 77.82 1641 1627 361.1
A 15 66 20925 53.44 1641 1627 361.1
B 5 176 125165 317.2 1664 1675 389.3
B 5 46 21832 51.77 1664 1675 389.3
B 15 80 18268 42.62 1664 1675 389.3
C 3 159 22950 49.8 1535 1593 428.8
C 9 68 5146 8.29 1535 1593 428.8
C 1 192 4462 6.69 1535 1593 428.8
D 2 33 199976 429.1 1457 1515 462.5
D 13 7 166464 356.64 1457 1515 462.5
D 1 5 118152 252.18 1457 1515 462.5

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