ASTROSAT CZTI

Data Quality Report

Orbit 17870

Creation date: 2024-06-27T17:41:53.071585
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_085T01_9000002658_17870cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17870cztM0_level2_quad_clean.evt
Size (bytes)666,483,840149,978,880
Size635.6 MB 143.0 MB
Events in quadrant A4,841,472968,843
Events in quadrant B4,909,275972,114
Events in quadrant C4,878,201941,415
Events in quadrant D4,841,407931,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214292
B0215313
C0215272
D0219422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105171131.074451%
B105171371.302653%
C105171421.350195%
D10517990.941333%

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 12027 10518 0 0 0.00% 0.00%
B 12027 10517 1 1 0.01% 0.01%
C 12027 10518 0 0 0.00% 0.00%
D 12027 10518 10 10 0.08% 0.10%

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 6 16 37395 143.95 1249 1224 251.3
A 0 226 10542 37.08 1249 1224 251.3
A 3 137 9620 33.41 1249 1224 251.3
B 12 111 29373 117.16 1246 1212 240.4
B 11 111 25700 101.87 1246 1212 240.4
B 0 183 22902 90.23 1246 1212 240.4
C 14 238 182467 647.68 1192 1196 279.9
C 3 233 24861 84.55 1192 1196 279.9
C 5 218 24069 81.72 1192 1196 279.9
D 1 52 151656 509.15 1211 1174 295.6
D 2 234 46834 154.49 1211 1174 295.6
D 2 152 39990 131.33 1211 1174 295.6

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