ASTROSAT CZTI

Data Quality Report

Orbit 35187

Creation date: 2022-04-01T14:32:06.870374
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_020T01_9000005050_35187cztM0_level2.evt modeM0/AS1T05_020T01_9000005050_35187cztM0_level2_quad_clean.evt
Size (bytes)932,690,88058,507,200
Size889.5 MB 55.8 MB
Events in quadrant A2,607,443432,315
Events in quadrant B8,980,102350,535
Events in quadrant C3,291,196424,531
Events in quadrant D13,020,927200,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107293
B0302671
C0128731
D0421721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A515370.135843%
B5153290556.374927%
C51531182.289928%
D5153488594.799146%

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 7007 5155 0 0 0.00% 0.00%
B 7007 5154 2014 2014 28.74% 39.08%
C 7007 5155 89 89 1.27% 1.73%
D 7007 5155 4747 4747 67.75% 92.09%

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 79892 620.06 644 632 127.8
A 13 6 19033 143.95 644 632 127.8
A 9 143 10244 75.2 644 632 127.8
B 5 236 6750977 72716.31 490 479 92.8
B 5 172 178941 1922.39 490 479 92.8
B 3 112 56799 606.68 490 479 92.8
C 1 23 250201 1750.55 620 625 142.6
C 15 214 217190 1519.01 620 625 142.6
C 0 10 149451 1043.88 620 625 142.6
D 7 80 7592476 88124.44 352 342 86.2
D 8 195 3410671 39584.83 352 342 86.2
D 10 118 216519 2509.24 352 342 86.2

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