ASTROSAT CZTI

Data Quality Report

Orbit 20230217_A12_054T03_9000005516_level2

Creation date: 2023-02-27T15:04:43.346558
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/AS1A12_054T03_9000005516cztM0_level2.fits modeM0/AS1A12_054T03_9000005516cztM0_level2_quad_clean.evt
Size (bytes)4,094,043,8404,459,101,120
Size3.8 GB 4.2 GB
Events in quadrant A24,523,85226,818,599
Events in quadrant B23,580,63827,237,012
Events in quadrant C24,135,40226,166,188
Events in quadrant D20,301,25823,402,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017660
B017660
C017660
D017660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093680
B093650
C093660
D093650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010230560
B010269280
C010856260
D012480210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45906443010.936906%
B45907084481.840242%
C45906480871.761628%
D459042269245.865259%

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 640585 459139 0 0 0.00% 0.00%
B 640585 459103 0 0 0.00% 0.00%
C 640585 459014 0 0 0.00% 0.00%
D 640585 458221 0 0 0.00% 0.00%

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 7 110 20192 8.94 6404 6001 1587.0
A 9 19 20129 8.9 6404 6001 1587.0
A 0 29 20049 8.85 6404 6001 1587.0
B 2 9 20187 11.61 6256 5960 1225.7
B 3 80 17914 9.75 6256 5960 1225.7
B 5 128 16491 8.59 6256 5960 1225.7
C 1 81 19581 8.29 6389 5972 1641.6
C 3 202 18995 7.93 6389 5972 1641.6
C 1 80 18951 7.91 6389 5972 1641.6
D 10 189 15005 6.24 5828 5306 1554.5
D 7 3 14984 6.23 5828 5306 1554.5
D 4 160 14605 5.98 5828 5306 1554.5

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