ASTROSAT CZTI

Data Quality Report

Orbit 22279

Creation date: 2024-06-27T18:38:55.787444
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/AS1A07_018T08_9000003296_22279cztM0_level2.evt modeM0/AS1A07_018T08_9000003296_22279cztM0_level2_quad_clean.evt
Size (bytes)487,497,60091,854,720
Size464.9 MB 87.6 MB
Events in quadrant A3,297,245593,142
Events in quadrant B3,506,860603,536
Events in quadrant C3,290,439566,423
Events in quadrant D4,210,928548,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138401
B0144581
C0138621
D0166071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6745901.334322%
B67461161.719538%
C67461251.852950%
D67462593.839312%

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 7555 6746 0 0 0.00% 0.00%
B 7556 6747 6 6 0.08% 0.09%
C 7556 6747 1 1 0.01% 0.01%
D 7556 6747 195 195 2.58% 2.89%

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 13 254 9807 51.94 856 839 172.6
A 0 226 7252 37.15 856 839 172.6
A 3 137 7159 36.61 856 839 172.6
B 0 244 99707 607.05 850 829 162.9
B 3 64 46052 277.64 850 829 162.9
B 4 171 24913 147.86 850 829 162.9
C 14 238 130366 687.93 809 816 188.3
C 10 22 8534 40.98 809 816 188.3
C 13 61 5679 25.82 809 816 188.3
D 1 52 814244 4136.55 816 794 196.6
D 12 235 253570 1285.41 816 794 196.6
D 2 136 30962 153.41 816 794 196.6

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