ASTROSAT CZTI

Data Quality Report

Orbit 18860

Creation date: 2024-06-27T17:55:45.768729
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_094T01_9000002816_18860cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18860cztM0_level2_quad_clean.evt
Size (bytes)488,969,28093,202,560
Size466.3 MB 88.9 MB
Events in quadrant A3,179,786613,257
Events in quadrant B3,342,248623,122
Events in quadrant C3,725,108588,997
Events in quadrant D4,146,130569,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128161
B0134401
C0150261
D0163011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6123310.506288%
B6123580.947248%
C6123941.535195%
D61241792.922926%

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 7463 6124 1 1 0.01% 0.02%
B 7463 6124 2 2 0.03% 0.03%
C 7463 6124 6 6 0.08% 0.10%
D 7464 6125 145 145 1.94% 2.37%

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 17005 98.41 819 806 164.6
A 13 254 8355 45.86 819 806 164.6
A 0 226 7328 39.62 819 806 164.6
B 7 220 114039 735.59 813 794 154.0
B 12 111 16765 103.74 813 794 154.0
B 11 111 14447 88.68 813 794 154.0
C 3 233 490987 2743.52 774 779 178.7
C 14 238 122428 680.83 774 779 178.7
C 5 112 92467 513.14 774 779 178.7
D 7 238 513325 2721.77 779 758 188.3
D 9 1 252232 1335.35 779 758 188.3
D 1 52 232336 1229.7 779 758 188.3

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