ASTROSAT CZTI

Data Quality Report

Orbit 27559

Creation date: 2024-06-27T19:41:30.387742
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/AS1C05_019T04_9000003956_27559cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27559cztM0_level2_quad_clean.evt
Size (bytes)503,239,680106,603,200
Size479.9 MB 101.7 MB
Events in quadrant A3,571,010698,183
Events in quadrant B3,539,965723,434
Events in quadrant C3,344,433689,721
Events in quadrant D4,347,388666,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147480
B0146170
C0140590
D0173650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6459971.501780%
B6459921.424369%
C6459861.331475%
D64591231.904320%

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 7778 6458 52 52 0.67% 0.81%
B 7778 6458 12 12 0.15% 0.19%
C 7778 6458 1 1 0.01% 0.02%
D 7778 6458 86 86 1.11% 1.33%

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 4 2 330593 1986.1 841 826 166.0
A 13 254 10417 57.76 841 826 166.0
A 3 137 7409 39.65 841 826 166.0
B 10 245 196592 1237.83 845 824 158.2
B 3 64 29197 179.4 845 824 158.2
B 12 111 18624 112.55 845 824 158.2
C 14 238 134723 708.52 815 823 189.0
C 2 16 12335 60.91 815 823 189.0
C 10 22 11042 54.07 815 823 189.0
D 1 52 1152127 6019.24 808 787 191.3
D 12 227 59045 304.57 808 787 191.3
D 2 250 31902 162.67 808 787 191.3

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