ASTROSAT CZTI

Data Quality Report

Orbit 17629

Creation date: 2024-06-27T17:38:51.132636
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/AS1T03_071T01_9000002610_17629cztM0_level2.evt modeM0/AS1T03_071T01_9000002610_17629cztM0_level2_quad_clean.evt
Size (bytes)580,507,20097,084,800
Size553.6 MB 92.6 MB
Events in quadrant A3,740,532641,351
Events in quadrant B3,236,932654,235
Events in quadrant C3,274,557612,577
Events in quadrant D6,898,744588,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149951
B0133351
C0133631
D0249041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63551372.155783%
B6355530.833989%
C6356681.069855%
D63562093.288232%

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 7630 6356 75 75 0.98% 1.18%
B 7630 6355 1 1 0.01% 0.02%
C 7631 6357 0 0 0.00% 0.00%
D 7631 6357 86 86 1.13% 1.35%

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 14 237 581242 3545.51 822 809 163.7
A 0 226 7162 38.8 822 809 163.7
A 12 194 6091 32.26 822 809 163.7
B 0 230 42513 274.56 813 798 151.9
B 12 111 17404 109.3 813 798 151.9
B 0 189 16147 101.02 813 798 151.9
C 14 238 123087 686.85 773 780 178.1
C 3 233 93751 522.1 773 780 178.1
C 0 207 20640 111.53 773 780 178.1
D 12 144 3656820 19553.49 781 758 187.0
D 13 189 207512 1105.77 781 758 187.0
D 1 52 41410 217.41 781 758 187.0

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