ASTROSAT CZTI

Data Quality Report

Orbit 35275

Creation date: 2022-04-07T13:02:02.424976
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/AS1A11_082T01_9000005056_35275cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35275cztM0_level2_quad_clean.evt
Size (bytes)515,399,04073,900,800
Size491.5 MB 70.5 MB
Events in quadrant A2,625,729484,881
Events in quadrant B5,830,541460,183
Events in quadrant C3,299,011476,971
Events in quadrant D3,507,718457,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107843
B0208702
C0129742
D0138342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510680.156678%
B5106106420.838230%
C51061162.271837%
D5106901.762632%

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 7079 5107 2 2 0.03% 0.04%
B 7079 5107 780 780 11.02% 15.27%
C 7079 5107 89 89 1.26% 1.74%
D 7079 5107 71 71 1.00% 1.39%

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 96290 748.94 644 633 127.7
A 15 174 22942 174.67 644 633 127.7
A 13 6 8512 61.69 644 633 127.7
B 5 236 2622648 23803.51 588 574 110.2
B 5 172 668577 6064.21 588 574 110.2
B 14 207 163404 1478.19 588 574 110.2
C 0 10 561227 3865.77 629 636 145.0
C 15 214 215208 1479.66 629 636 145.0
C 0 207 32003 216.3 629 636 145.0
D 7 80 277348 1809.24 636 620 153.0
D 8 195 228709 1491.24 636 620 153.0
D 8 230 112060 728.59 636 620 153.0

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