ASTROSAT CZTI

Data Quality Report

Orbit 31426

Creation date: 2024-06-27T20:25:45.543391
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_073T02_9000004522_31426cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31426cztM0_level2_quad_clean.evt
Size (bytes)502,032,96044,069,760
Size478.8 MB 42.0 MB
Events in quadrant A2,033,714302,304
Events in quadrant B7,742,410166,983
Events in quadrant C2,139,736297,812
Events in quadrant D3,017,700285,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0873
B0873
C0884
D0873

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08648312
B026226566
C09044334
D012625530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3977180.452602%
B3970292673.702771%
C39711052.644170%
D39671313.302244%

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 5344 3983 0 0 0.00% 0.00%
B 5347 3976 2174 2174 40.66% 54.68%
C 5337 3979 2 2 0.04% 0.05%
D 5336 3976 88 88 1.65% 2.21%

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 7474 66.62 526 516 104.4
A 3 137 4962 42.57 526 516 104.4
A 0 226 4405 37.24 526 516 104.4
B 12 1 6255000 136626.3 240 235 45.8
B 6 159 500883 10935.93 240 235 45.8
B 12 2 24024 519.64 240 235 45.8
C 14 238 88521 739.31 512 516 119.0
C 3 233 35991 298.01 512 516 119.0
C 2 114 9332 74.06 512 516 119.0
D 8 195 468370 3854.62 512 498 121.4
D 12 218 314732 2588.86 512 498 121.4
D 5 233 136696 1122.08 512 498 121.4

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