ASTROSAT CZTI

Data Quality Report

Orbit 20220820_A10_094T19_9000005300_level2

Creation date: 2022-08-25T17:33:23.639414
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/AS1A10_094T19_9000005300cztM0_level2_bc.evt modeM0/AS1A10_094T19_9000005300cztM0_level2_quad_clean.evt
Size (bytes)175,017,60085,553,280
Size166.9 MB 81.6 MB
Events in quadrant A1,127,523570,012
Events in quadrant B1,347,543570,833
Events in quadrant C1,245,338572,284
Events in quadrant D1,250,044545,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099490
B0109640
C0101180
D0107360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4723180.381114%
B4723661.397417%
C4723240.508152%
D4723671.418590%

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 4723 4723 1 1 0.02% 0.02%
B 4722 4722 5 5 0.11% 0.11%
C 4722 4722 4 4 0.08% 0.08%
D 4723 4723 13 13 0.28% 0.28%

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 10 83 184755 3427.75 227 223 53.8
A 9 143 20611 378.71 227 223 53.8
A 13 248 11668 212.6 227 223 53.8
B 5 200 185269 3861.41 226 220 47.9
B 0 213 149528 3115.61 226 220 47.9
B 5 172 100062 2083.4 226 220 47.9
C 15 214 186793 3434.94 223 220 54.3
C 1 23 76995 1413.48 223 220 54.3
C 0 10 64207 1178.04 223 220 54.3
D 13 249 117170 2086.1 225 218 56.1
D 2 249 60484 1074.98 225 218 56.1
D 12 233 50406 895.22 225 218 56.1

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