ASTROSAT CZTI

Data Quality Report

Orbit 06294

Creation date: 2024-06-27T15:05:17.016916
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/AS1A02_118T01_9000000826_06294cztM0_level2.evt modeM0/AS1A02_118T01_9000000826_06294cztM0_level2_quad_clean.evt
Size (bytes)554,621,76091,031,040
Size528.9 MB 86.8 MB
Events in quadrant A3,245,144599,789
Events in quadrant B3,132,484610,038
Events in quadrant C2,704,838606,651
Events in quadrant D7,315,418528,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132232
B0131181
C0121771
D0258721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5882711.207072%
B58821773.009181%
C5882520.884053%
D5882101317.222033%

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 7042 5882 2 2 0.03% 0.03%
B 7042 5882 86 86 1.22% 1.46%
C 7042 5882 0 0 0.00% 0.00%
D 7042 5882 867 867 12.31% 14.74%

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 15 236 299141 2133.16 693 679 139.9
A 14 111 147823 1051.66 693 679 139.9
A 8 15 104342 740.9 693 679 139.9
B 0 219 342901 2661.01 691 674 128.6
B 15 204 52000 399.09 691 674 128.6
B 4 81 29491 224.07 691 674 128.6
C 1 16 58900 374.87 677 680 155.3
C 13 61 5396 30.37 677 680 155.3
C 8 222 1972 8.32 677 680 155.3
D 2 63 3763004 24061.16 644 625 156.4
D 12 220 340559 2173.95 644 625 156.4
D 12 110 232196 1480.94 644 625 156.4

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