ASTROSAT CZTI

Data Quality Report

Orbit 20632

Creation date: 2024-06-27T18:17:41.136047
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_007T06_9000003050_20632cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20632cztM0_level2_quad_clean.evt
Size (bytes)95,123,52014,817,600
Size90.7 MB 14.1 MB
Events in quadrant A629,17692,246
Events in quadrant B623,26986,136
Events in quadrant C640,16087,555
Events in quadrant D888,08076,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011278
B011078
C011078
D010979

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065
B088
C065
D088

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108157839
B0111648297
C0109207963
D01427210662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1471100.679810%
B1399110.786276%
C1455171.168385%
D1326403.016591%

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 4806 1717 0 0 0.00% 0.00%
B 4796 1643 0 0 0.00% 0.00%
C 4798 1704 0 0 0.00% 0.00%
D 4770 1578 36 36 0.75% 2.28%

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 5 16 1517 38.42 163 159 35.3
A 0 226 1396 35.0 163 159 35.3
A 3 137 1371 34.29 163 159 35.3
B 7 220 5346 161.8 153 149 32.1
B 0 219 3793 113.45 153 149 32.1
B 12 111 3679 109.9 153 149 32.1
C 14 238 23662 622.3 153 154 37.8
C 8 208 12881 336.91 153 154 37.8
C 8 128 3067 77.11 153 154 37.8
D 1 52 175990 4903.78 139 135 35.9
D 13 153 72330 2013.18 139 135 35.9
D 1 20 66857 1860.57 139 135 35.9

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