ASTROSAT CZTI

Data Quality Report

Orbit 20201230_A10_101T21_9000004090_level2

Creation date: 2021-01-06T02:40:59.731154
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_101T21_9000004090cztM0_level2_bc.evt modeM0/AS1A10_101T21_9000004090cztM0_level2_quad_clean.evt
Size (bytes)10,282,654,0804,287,571,200
Size9.6 GB 4.0 GB
Events in quadrant A54,406,35229,093,301
Events in quadrant B54,500,42429,669,165
Events in quadrant C50,940,09328,673,750
Events in quadrant D135,816,50826,575,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040310
B04976770
C04942860
D07842770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046180
B047140
C047140
D047140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03710
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23167240721.757657%
B23167231511.360113%
C23167241781.803412%
D2316712742611.838340%

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 297585 231651 193 193 0.06% 0.08%
B 297585 231646 85 85 0.03% 0.04%
C 297585 231648 50 50 0.02% 0.02%
D 297585 231646 7802 7802 2.62% 3.37%

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 15 174 5721976 2147.02 12443 12280 2659.4
A 13 254 343557 124.57 12443 12280 2659.4
A 15 169 155635 53.91 12443 12280 2659.4
B 10 245 3795372 1602.08 12591 12333 2361.3
B 0 183 609522 252.9 12591 12333 2361.3
B 0 230 571140 236.65 12591 12333 2361.3
C 7 220 2077436 716.88 12175 12145 2881.0
C 3 233 1067810 366.43 12175 12145 2881.0
C 7 247 750076 256.14 12175 12145 2881.0
D 1 52 44447097 16311.95 11858 11501 2724.1
D 8 195 35934109 13186.9 11858 11501 2724.1
D 2 250 5016738 1837.38 11858 11501 2724.1

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