ASTROSAT CZTI

Data Quality Report

Orbit 18886

Creation date: 2024-06-27T17:56:06.277193
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/AS1A06_003T07_9000002818_18886cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18886cztM0_level2_quad_clean.evt
Size (bytes)487,630,080100,872,000
Size465.0 MB 96.2 MB
Events in quadrant A3,780,510656,427
Events in quadrant B3,260,061679,417
Events in quadrant C3,088,842646,323
Events in quadrant D4,198,739620,931

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155854
B0139072
C0133482
D0168982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64841452.236274%
B6484370.570635%
C6484360.555213%
D64841372.112893%

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 7634 6485 81 81 1.06% 1.25%
B 7634 6485 7 7 0.09% 0.11%
C 7634 6485 0 0 0.00% 0.00%
D 7634 6485 96 96 1.26% 1.48%

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 6 16 769452 4915.94 778 762 156.4
A 13 254 10342 61.27 778 762 156.4
A 14 111 7711 44.44 778 762 156.4
B 7 220 77784 515.89 786 766 149.3
B 0 189 60526 400.29 786 766 149.3
B 0 190 19697 126.81 786 766 149.3
C 14 238 117865 665.62 752 756 175.9
C 3 233 30346 168.18 752 756 175.9
C 12 4 7435 37.96 752 756 175.9
D 9 1 357655 1987.13 749 728 179.6
D 1 52 347888 1932.76 749 728 179.6
D 12 110 325444 1807.8 749 728 179.6

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