ASTROSAT CZTI

Data Quality Report

Orbit 11243

Creation date: 2024-06-27T16:10:13.042691
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/AS1T01_202T01_9000001640_11243cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11243cztM0_level2_quad_clean.evt
Size (bytes)548,925,120127,946,880
Size523.5 MB 122.0 MB
Events in quadrant A5,595,997837,650
Events in quadrant B3,602,241888,857
Events in quadrant C2,892,697910,040
Events in quadrant D4,139,492831,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207712
B0144381
C0123241
D0162901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581266611.459050%
B58121873.217481%
C5812150.258087%
D58121031.772195%

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 6927 5813 435 435 6.28% 7.48%
B 6927 5813 87 87 1.26% 1.50%
C 6927 5813 2 2 0.03% 0.03%
D 6927 5813 78 78 1.13% 1.34%

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 8 5 2001788 12337.17 704 688 162.2
A 14 238 764900 4711.52 704 688 162.2
A 1 162 25418 152.47 704 688 162.2
B 4 239 513708 3366.37 739 725 152.4
B 11 51 99818 650.28 739 725 152.4
B 15 204 57791 374.49 739 725 152.4
C 14 234 6660 32.96 738 750 179.3
C 13 61 5267 25.19 738 750 179.3
C 0 10 4819 22.69 738 750 179.3
D 8 195 481085 2521.68 719 698 190.5
D 5 222 324397 1699.18 719 698 190.5
D 12 157 202921 1061.52 719 698 190.5

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