ASTROSAT CZTI

Data Quality Report

Orbit 16686

Creation date: 2024-06-27T17:26:11.926729
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/AS1A05_012T02_9000002468_16686cztM0_level2.evt modeM0/AS1A05_012T02_9000002468_16686cztM0_level2_quad_clean.evt
Size (bytes)629,763,84081,383,040
Size600.6 MB 77.6 MB
Events in quadrant A4,886,327502,411
Events in quadrant B3,091,512546,112
Events in quadrant C2,798,195525,569
Events in quadrant D7,908,825488,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182492
B0126741
C0118521
D0275431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A573880614.046706%
B5738621.080516%
C5738701.219937%
D5738103518.037644%

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 6879 5739 584 584 8.49% 10.18%
B 6879 5740 6 6 0.09% 0.10%
C 6879 5740 0 0 0.00% 0.00%
D 6879 5740 945 945 13.74% 16.46%

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 15 174 2249847 16775.85 671 660 134.1
A 12 96 39091 286.64 671 660 134.1
A 9 143 10865 76.12 671 660 134.1
B 15 35 190267 1413.08 703 686 134.2
B 0 229 106406 788.01 703 686 134.2
B 0 189 20713 149.28 703 686 134.2
C 14 238 105775 669.8 677 682 156.9
C 3 233 43698 274.16 677 682 156.9
C 7 247 8111 47.35 677 682 156.9
D 1 52 3942919 24812.08 658 639 158.9
D 2 16 1185853 7459.55 658 639 158.9
D 15 0 129511 811.1 658 639 158.9

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