ASTROSAT CZTI

Data Quality Report

Orbit 34668

Creation date: 2022-02-25T21:49:58.283402
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_065T06_9000004958_34668cztM0_level2.evt modeM0/AS1A11_065T06_9000004958_34668cztM0_level2_quad_clean.evt
Size (bytes)592,810,56054,950,400
Size565.3 MB 52.4 MB
Events in quadrant A4,672,638286,110
Events in quadrant B4,296,202349,311
Events in quadrant C3,040,761350,385
Events in quadrant D5,599,764320,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170973
B0158822
C0119302
D0204012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508976715.071723%
B508953710.552171%
C5089611.198664%
D50893526.916880%

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 7181 5090 554 554 7.71% 10.88%
B 7181 5090 341 341 4.75% 6.70%
C 7181 5089 48 48 0.67% 0.94%
D 7181 5090 284 284 3.95% 5.58%

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 2153589 17356.28 623 613 124.0
A 15 174 57528 458.82 623 613 124.0
A 10 83 45880 364.92 623 613 124.0
B 5 172 1090136 8943.89 648 634 121.8
B 5 200 303029 2482.41 648 634 121.8
B 5 255 256930 2103.97 648 634 121.8
C 15 214 219589 1477.51 643 650 148.2
C 0 10 192420 1294.16 643 650 148.2
C 14 67 60403 403.24 643 650 148.2
D 8 195 2083092 12441.8 621 608 167.4
D 2 249 543142 3241.37 621 608 167.4
D 2 250 199562 1188.65 621 608 167.4

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