ASTROSAT CZTI

Data Quality Report

Orbit 31862

Creation date: 2024-06-27T20:33:37.813752
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_109T01_9000004646_31862cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31862cztM0_level2_quad_clean.evt
Size (bytes)956,183,040191,165,760
Size911.9 MB 182.3 MB
Events in quadrant A5,598,5641,319,773
Events in quadrant B8,432,0151,297,996
Events in quadrant C7,244,8811,222,080
Events in quadrant D6,956,4291,205,393

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231022
B0328742
C0286412
D0273332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107581561.450084%
B107583122.900167%
C107585885.465700%
D107594944.591505%

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 13003 10760 0 0 0.00% 0.00%
B 13003 10760 12 12 0.09% 0.11%
C 13003 10760 187 187 1.44% 1.74%
D 13004 10761 335 335 2.58% 3.11%

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 13 254 20224 65.58 1450 1430 286.6
A 3 137 13933 43.63 1450 1430 286.6
A 0 226 12085 37.18 1450 1430 286.6
B 6 159 2752113 10315.3 1414 1383 266.7
B 0 190 41664 151.05 1414 1383 266.7
B 0 229 41558 150.66 1414 1383 266.7
C 0 10 1134448 3589.59 1364 1377 315.7
C 3 233 475211 1501.12 1364 1377 315.7
C 14 238 228045 718.09 1364 1377 315.7
D 12 233 624787 1922.5 1386 1357 324.3
D 12 218 547828 1685.17 1386 1357 324.3
D 8 195 417030 1281.83 1386 1357 324.3

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