ASTROSAT CZTI

Data Quality Report

Orbit 34612

Creation date: 2022-02-21T18:27:04.713197
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_046T09_9000004952_34612cztM0_level2.evt modeM0/AS1A11_046T09_9000004952_34612cztM0_level2_quad_clean.evt
Size (bytes)462,441,60053,588,160
Size441.0 MB 51.1 MB
Events in quadrant A2,633,827322,229
Events in quadrant B2,958,123325,398
Events in quadrant C2,904,485319,992
Events in quadrant D5,165,082299,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107823
B0117352
C0113072
D0188832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5070601.183432%
B5070801.577909%
C5070661.301775%
D50704448.757396%

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 7164 5071 36 36 0.50% 0.71%
B 7164 5071 54 54 0.75% 1.06%
C 7164 5071 39 39 0.54% 0.77%
D 7164 5071 355 355 4.96% 7.00%

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 15 169 113127 883.15 638 628 127.4
A 10 83 44375 343.43 638 628 127.4
A 13 254 9300 68.08 638 628 127.4
B 5 172 283655 2368.44 634 619 119.5
B 10 245 70434 584.21 634 619 119.5
B 4 170 31241 256.24 634 619 119.5
C 15 214 214848 1506.86 616 621 142.2
C 0 10 183156 1283.94 616 621 142.2
C 14 67 92911 649.16 616 621 142.2
D 8 195 1586556 10701.31 605 586 148.2
D 2 249 677909 4570.23 605 586 148.2
D 7 223 224919 1513.68 605 586 148.2

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