ASTROSAT CZTI

Data Quality Report

Orbit 09257

Creation date: 2024-06-27T15:43:16.916048
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/AS1A03_091T02_9000001292_09257cztM0_level2.evt modeM0/AS1A03_091T02_9000001292_09257cztM0_level2_quad_clean.evt
Size (bytes)106,957,44014,662,080
Size102.0 MB 14.0 MB
Events in quadrant A855,13580,469
Events in quadrant B791,34384,454
Events in quadrant C737,58278,164
Events in quadrant D735,31874,149

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072293616
B070533566
C069113492
D070913659

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07028
B06832
C07133
D06836

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169760.353565%
B172710.057904%
C170520.117302%
D168050.297619%

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 3509 1936 2 2 0.06% 0.10%
B 3509 1980 0 0 0.00% 0.00%
C 3509 1973 0 0 0.00% 0.00%
D 3509 1949 6 6 0.17% 0.31%

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 8 5 101053 2399.99 192 188 42.0
A 1 162 8705 202.65 192 188 42.0
A 0 226 1814 38.69 192 188 42.0
B 0 214 10512 258.17 197 193 40.0
B 4 173 6470 157.04 197 193 40.0
B 12 111 4131 98.52 197 193 40.0
C 9 68 5643 121.16 187 187 45.0
C 13 61 1430 27.6 187 187 45.0
C 8 222 1189 22.25 187 187 45.0
D 10 199 21351 450.22 183 178 47.0
D 1 52 8267 172.0 183 178 47.0
D 2 234 6296 130.09 183 178 47.0

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