ASTROSAT CZTI

Data Quality Report

Orbit 31616

Creation date: 2024-06-27T20:30:44.818209
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_123T01_9000004620_31616cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31616cztM0_level2_quad_clean.evt
Size (bytes)210,032,64023,172,480
Size200.3 MB 22.1 MB
Events in quadrant A2,055,190115,934
Events in quadrant B1,648,037156,100
Events in quadrant C1,315,686145,520
Events in quadrant D1,215,393149,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084581124
B06783614
C05803727
D05464545

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B011
C011
D011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437
B0468
C0466
D0466

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181556130.909091%
B1831904.915347%
C18291578.583926%
D1834331.799346%

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 4659 1849 368 368 7.90% 19.90%
B 4658 1865 3 3 0.06% 0.16%
C 4663 1853 38 38 0.81% 2.05%
D 4657 1861 9 9 0.19% 0.48%

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 0 13 1266998 29109.34 203 198 43.5
A 13 254 3108 66.87 203 198 43.5
A 13 6 2162 45.13 203 198 43.5
B 6 159 547071 11503.0 235 229 47.5
B 0 190 45311 948.31 235 229 47.5
B 4 80 45174 945.43 235 229 47.5
C 3 233 357213 6525.95 223 224 54.7
C 14 238 37403 679.65 223 224 54.7
C 0 10 33693 611.83 223 224 54.7
D 8 195 200207 3484.36 231 226 57.4
D 7 223 76421 1327.58 231 226 57.4
D 2 250 25219 435.46 231 226 57.4

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