ASTROSAT CZTI

Data Quality Report

Orbit 20220503_A09_029T02_9000005106_level2

Creation date: 2022-05-05T14:08:08.481801
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/AS1A09_029T02_9000005106cztM0_level2_bc.evt modeM0/AS1A09_029T02_9000005106cztM0_level2_quad_clean.evt
Size (bytes)1,681,050,240495,587,520
Size1.6 GB 472.6 MB
Events in quadrant A8,553,3603,173,954
Events in quadrant B16,097,1323,096,894
Events in quadrant C10,968,6223,150,937
Events in quadrant D12,703,8622,981,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07760
B07760
C07760
D07760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780210
B01085580
C0854920
D0943560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37959560.147528%
B3795929807.850576%
C379598412.215548%
D3795912473.285123%

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 51067 37967 6 6 0.01% 0.02%
B 51067 37958 543 543 1.06% 1.43%
C 51067 37959 150 150 0.29% 0.40%
D 51067 37956 221 221 0.43% 0.58%

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 10 83 757618 1794.31 1889 1855 421.2
A 15 169 264999 624.75 1889 1855 421.2
A 7 16 108547 253.3 1889 1855 421.2
B 5 172 4258036 11505.2 1852 1811 369.9
B 5 31 2948110 7964.28 1852 1811 369.9
B 5 255 723823 1951.7 1852 1811 369.9
C 15 214 1473877 3499.0 1835 1817 420.7
C 0 10 1057492 2509.28 1835 1817 420.7
C 1 23 561129 1329.45 1835 1817 420.7
D 13 249 2955009 6666.24 1840 1779 443.0
D 8 195 471269 1059.77 1840 1779 443.0
D 10 118 298580 669.96 1840 1779 443.0

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