ASTROSAT CZTI

Data Quality Report

Orbit 29777

Creation date: 2024-06-27T20:07:40.048982
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/AS1T03_291T01_9000004278_29777cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29777cztM0_level2_quad_clean.evt
Size (bytes)538,462,080111,329,280
Size513.5 MB 106.2 MB
Events in quadrant A3,321,483750,375
Events in quadrant B5,505,947753,902
Events in quadrant C3,419,109710,136
Events in quadrant D3,610,040693,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139652
B0207672
C0141322
D0147982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6650660.992481%
B66501872.812030%
C66511011.518569%
D6651490.736731%

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 9020 6651 0 0 0.00% 0.00%
B 9020 6651 2 2 0.02% 0.03%
C 9021 6652 0 0 0.00% 0.00%
D 9021 6652 15 15 0.17% 0.23%

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 13 254 16088 89.53 857 841 170.3
A 3 137 8208 43.26 857 841 170.3
A 0 226 7246 37.61 857 841 170.3
B 6 159 1971494 12296.97 853 834 160.3
B 0 229 119263 739.0 853 834 160.3
B 15 33 34973 213.03 853 834 160.3
C 14 238 134797 709.29 817 821 188.9
C 3 233 61664 322.11 817 821 188.9
C 10 22 21830 111.22 817 821 188.9
D 8 195 340222 1768.01 817 795 192.0
D 2 250 102991 532.32 817 795 192.0
D 2 234 28521 144.42 817 795 192.0

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