ASTROSAT CZTI

Data Quality Report

Orbit 20220909_T05_053T01_9000005338_level2

Creation date: 2022-09-14T18:21:34.076360
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/AS1T05_053T01_9000005338cztM0_level2_bc.evt modeM0/AS1T05_053T01_9000005338cztM0_level2_quad_clean.evt
Size (bytes)6,051,199,6801,813,397,760
Size5.6 GB 1.7 GB
Events in quadrant A39,212,84611,507,615
Events in quadrant B44,802,10411,419,370
Events in quadrant C36,058,23311,631,225
Events in quadrant D53,617,22810,722,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028740
B028740
C028740
D028740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03076450
B03442780
C02955200
D03804590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05360
B05360
C05360
D05370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1407857430.527755%
B14078647623.382439%
C1407866810.483713%
D14078670725.023227%

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 198466 140813 31 31 0.02% 0.02%
B 198466 140774 295 295 0.15% 0.21%
C 198466 140787 59 59 0.03% 0.04%
D 198466 140773 944 944 0.48% 0.67%

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 10 83 6846951 4322.69 7042 6924 1582.4
A 15 222 2105328 1326.13 7042 6924 1582.4
A 9 143 1014192 636.56 7042 6924 1582.4
B 5 255 5703035 4055.31 7035 6874 1404.6
B 5 172 4432903 3151.05 7035 6874 1404.6
B 5 200 1382538 979.39 7035 6874 1404.6
C 15 214 5729333 3564.34 6919 6858 1605.5
C 0 10 1712936 1062.66 6919 6858 1605.5
C 14 254 721257 444.98 6919 6858 1605.5
D 2 249 7007594 4276.97 6784 6568 1636.9
D 10 253 4001422 2440.48 6784 6568 1636.9
D 2 250 3600408 2195.5 6784 6568 1636.9

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