ASTROSAT CZTI

Data Quality Report

Orbit 18366

Creation date: 2024-06-27T17:48:53.498410
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_083T01_9000002722_18366cztM0_level2.evt modeM0/AS1T03_083T01_9000002722_18366cztM0_level2_quad_clean.evt
Size (bytes)339,045,12074,949,120
Size323.3 MB 71.5 MB
Events in quadrant A2,328,363493,243
Events in quadrant B2,625,470508,913
Events in quadrant C2,576,484476,561
Events in quadrant D2,414,639457,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099531
B0107871
C0104551
D0101401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4737210.443319%
B4737501.055520%
C4737571.203293%
D473740.084442%

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 5962 4738 5 5 0.08% 0.11%
B 5962 4738 17 17 0.29% 0.36%
C 5962 4738 3 3 0.05% 0.06%
D 5962 4738 1 1 0.02% 0.02%

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 4 2 61916 518.53 588 577 118.3
A 0 226 5058 37.88 588 577 118.3
A 12 194 4285 31.35 588 577 118.3
B 3 64 215911 1934.95 596 582 111.3
B 7 220 40359 357.44 596 582 111.3
B 0 189 22775 199.43 596 582 111.3
C 3 233 187075 1398.65 575 581 133.3
C 14 238 91065 678.6 575 581 133.3
C 0 207 47458 351.56 575 581 133.3
D 12 110 95259 680.05 574 559 139.3
D 11 176 55941 397.7 574 559 139.3
D 2 69 33409 235.9 574 559 139.3

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