ASTROSAT CZTI

Data Quality Report

Orbit 20210525_A10_058T03_9000004408_level2

Creation date: 2021-05-27T19:32:22.453374
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_058T03_9000004408cztM0_level2_bc.evt modeM0/AS1A10_058T03_9000004408cztM0_level2_quad_clean.evt
Size (bytes)4,744,543,6801,185,439,680
Size4.4 GB 1.1 GB
Events in quadrant A20,399,9717,875,659
Events in quadrant B43,770,1697,821,029
Events in quadrant C21,356,0817,107,722
Events in quadrant D52,279,5137,159,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01871030
B02668400
C02059490
D02915500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017700
B017700
C017700
D017700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8663312721.468263%
B8663322532.600626%
C866331025011.831519%
D8663332613.764155%

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 98633 86634 35 35 0.04% 0.04%
B 98633 86637 37 37 0.04% 0.04%
C 98633 86624 20 20 0.02% 0.02%
D 98633 86634 347 347 0.35% 0.40%

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 1102009 1042.74 4944 4872 1052.2
A 8 192 159797 147.24 4944 4872 1052.2
A 13 254 146423 134.53 4944 4872 1052.2
B 6 159 23305717 25034.07 4930 4823 930.8
B 0 229 601101 640.63 4930 4823 930.8
B 4 171 286361 302.48 4930 4823 930.8
C 14 254 1314290 1262.22 4457 4460 1037.7
C 15 208 1238579 1189.27 4457 4460 1037.7
C 0 10 763328 731.29 4457 4460 1037.7
D 8 195 27320499 25553.41 4752 4612 1069.0
D 13 249 1528980 1426.01 4752 4612 1069.0
D 5 222 1515722 1413.61 4752 4612 1069.0

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