ASTROSAT CZTI

Data Quality Report

Orbit 28553

Creation date: 2024-06-27T19:53:15.762682
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_102T07_9000004102_28553cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28553cztM0_level2_quad_clean.evt
Size (bytes)1,656,233,280218,704,320
Size1.5 GB 208.6 MB
Events in quadrant A10,356,0281,375,992
Events in quadrant B10,076,2891,392,262
Events in quadrant C9,298,4441,336,928
Events in quadrant D19,147,1051,207,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0429934
B0418334
C0395194
D0697224

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190184562.397728%
B190184842.544957%
C190182921.535388%
D19019223911.772438%

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 21333 19019 163 163 0.76% 0.86%
B 21333 19018 138 138 0.65% 0.73%
C 21333 19019 2 2 0.01% 0.01%
D 21333 19019 2158 2158 10.12% 11.35%

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 15 174 1392837 2994.74 2309 2262 464.3
A 13 254 32104 64.27 2309 2262 464.3
A 5 98 29748 59.19 2309 2262 464.3
B 4 171 807297 1810.89 2299 2241 444.6
B 10 245 140786 311.64 2299 2241 444.6
B 12 111 56499 122.05 2299 2241 444.6
C 14 238 357350 677.14 2222 2233 524.4
C 7 247 145796 273.74 2222 2233 524.4
C 3 233 121082 226.62 2222 2233 524.4
D 1 52 8496338 16550.51 2146 2091 513.2
D 8 195 2262155 4403.59 2146 2091 513.2
D 2 250 91733 174.66 2146 2091 513.2

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