ASTROSAT CZTI

Data Quality Report

Orbit 17813

Creation date: 2024-06-27T17:41:13.286208
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_015T01_9000002650_17813cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17813cztM0_level2_quad_clean.evt
Size (bytes)491,238,72077,336,640
Size468.5 MB 73.8 MB
Events in quadrant A3,281,483480,371
Events in quadrant B3,573,172484,673
Events in quadrant C3,340,617468,328
Events in quadrant D4,226,666441,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142502
B0151502
C0143242
D0170972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6701991.477391%
B67021612.402268%
C67021522.267980%
D67023685.490898%

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 8576 6702 2 2 0.02% 0.03%
B 8577 6703 27 27 0.31% 0.40%
C 8577 6703 3 3 0.03% 0.04%
D 8577 6703 221 221 2.58% 3.30%

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 47404 272.1 840 821 171.2
A 0 226 7455 38.75 840 821 171.2
A 3 137 6191 31.37 840 821 171.2
B 7 220 151805 933.15 837 815 161.8
B 10 245 80784 494.22 837 815 161.8
B 12 111 18577 109.77 837 815 161.8
C 14 238 124753 652.52 809 813 189.9
C 9 160 26035 132.79 809 813 189.9
C 9 176 18028 90.63 809 813 189.9
D 7 238 833811 4328.26 798 778 192.5
D 2 165 200620 1038.34 798 778 192.5
D 1 52 75241 386.89 798 778 192.5

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