ASTROSAT CZTI

Data Quality Report

Orbit 19818

Creation date: 2024-06-27T18:07:30.258632
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_118T01_9000002962_19818cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19818cztM0_level2_quad_clean.evt
Size (bytes)144,838,08013,449,600
Size138.1 MB 12.8 MB
Events in quadrant A1,109,91363,308
Events in quadrant B1,037,28565,129
Events in quadrant C982,85061,776
Events in quadrant D1,109,11662,120

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07026
B07436
C07937
D07531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077
B055
C066
D044

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077583097
B073342878
C071932902
D079243178

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2130341.596244%
B2145140.652681%
C213950.233754%
D2104271.283270%

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 5463 2225 19 19 0.35% 0.85%
B 5462 2242 9 9 0.16% 0.40%
C 5462 2231 0 0 0.00% 0.00%
D 5462 2216 22 22 0.40% 0.99%

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 14 238 119112 2271.37 250 245 52.3
A 14 254 13980 262.46 250 245 52.3
A 5 16 10649 198.8 250 245 52.3
B 7 220 44360 879.61 251 246 50.2
B 12 111 5704 108.83 251 246 50.2
B 11 111 5063 96.05 251 246 50.2
C 14 238 37664 645.44 242 242 58.0
C 13 61 1738 25.79 242 242 58.0
C 8 128 852 10.51 242 242 58.0
D 12 218 153264 2535.1 242 235 60.4
D 1 52 22270 365.03 242 235 60.4
D 2 234 11527 187.06 242 235 60.4

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