ASTROSAT CZTI

Data Quality Report

Orbit 20210228_A10_050T03_9000004216_level2

Creation date: 2021-03-06T12:19:34.559636
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_050T03_9000004216cztM0_level2_bc.evt modeM0/AS1A10_050T03_9000004216cztM0_level2_quad_clean.evt
Size (bytes)5,570,755,2001,256,264,640
Size5.2 GB 1.2 GB
Events in quadrant A22,379,1218,502,579
Events in quadrant B30,958,4678,443,641
Events in quadrant C30,509,9798,241,112
Events in quadrant D78,076,7426,035,940

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020220
B020220
C020220
D020220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100990
B02461840
C02422980
D05523420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9944812131.219733%
B9944845294.554139%
C9944832653.283123%
D994485181552.102606%

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 113068 99449 36 36 0.03% 0.04%
B 113068 99443 459 459 0.41% 0.46%
C 113068 99449 22 22 0.02% 0.02%
D 113068 99369 993 993 0.88% 1.00%

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 14 235 523960 442.99 5427 5340 1170.7
A 1 113 324935 272.99 5427 5340 1170.7
A 15 174 298697 250.58 5427 5340 1170.7
B 10 245 6638341 6535.74 5342 5207 1014.9
B 0 190 975167 955.72 5342 5207 1014.9
B 5 172 852038 834.4 5342 5207 1014.9
C 3 233 9617474 7788.5 5202 5195 1234.2
C 10 9 250043 198.39 5202 5195 1234.2
C 2 114 201030 158.68 5202 5195 1234.2
D 12 33 38398492 43077.1 3810 3686 891.3
D 1 52 10849846 12168.86 3810 3686 891.3
D 8 195 5744493 6440.9 3810 3686 891.3

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