ASTROSAT CZTI

Data Quality Report

Orbit 12992

Creation date: 2024-06-27T16:34:50.290757
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/AS1G08_055T01_9000001912_12992cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_12992cztM0_level2_quad_clean.evt
Size (bytes)588,072,960100,065,600
Size560.8 MB 95.4 MB
Events in quadrant A3,875,489651,569
Events in quadrant B6,094,052582,382
Events in quadrant C3,507,150650,207
Events in quadrant D3,817,936617,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165772
B0231851
C0156191
D0167291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7591400.526940%
B7591117315.452510%
C7591320.421552%
D7591811.067053%

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 9192 7594 2 2 0.02% 0.03%
B 9192 7594 605 605 6.58% 7.97%
C 9192 7594 15 15 0.16% 0.20%
D 9192 7594 49 49 0.53% 0.65%

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 12 189 246530 1341.22 898 877 183.2
A 13 248 76301 411.8 898 877 183.2
A 1 162 37112 197.84 898 877 183.2
B 4 239 1831418 11798.02 812 789 155.2
B 3 64 565625 3640.25 812 789 155.2
B 10 245 240529 1545.07 812 789 155.2
C 0 207 88174 428.96 874 876 203.5
C 13 61 6313 26.72 874 876 203.5
C 14 234 4631 18.45 874 876 203.5
D 10 157 428918 2074.73 863 839 206.3
D 1 52 36846 174.51 863 839 206.3
D 13 122 34946 165.3 863 839 206.3

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