ASTROSAT CZTI

Data Quality Report

Orbit 30222

Creation date: 2024-06-27T20:13:18.631503
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/AS1A10_071T16_9000004348_30222cztM0_level2.evt modeM0/AS1A10_071T16_9000004348_30222cztM0_level2_quad_clean.evt
Size (bytes)556,957,44096,203,520
Size531.2 MB 91.7 MB
Events in quadrant A3,208,788636,524
Events in quadrant B5,005,078648,743
Events in quadrant C3,537,689615,048
Events in quadrant D4,693,507577,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134592
B0190784
C0145032
D0180432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249600.960154%
B62481011.616517%
C62481041.664533%
D62482624.193342%

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 7524 6250 4 4 0.05% 0.06%
B 7523 6248 7 7 0.09% 0.11%
C 7523 6249 10 10 0.13% 0.16%
D 7523 6249 230 230 3.06% 3.68%

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 8 192 24693 145.06 825 810 164.6
A 13 254 11364 64.1 825 810 164.6
A 3 137 8047 43.95 825 810 164.6
B 6 159 1742906 11327.0 820 802 153.8
B 10 247 22051 138.16 820 802 153.8
B 12 111 18858 117.4 820 802 153.8
C 3 233 284293 1528.84 793 799 185.4
C 14 238 132313 709.23 793 799 185.4
C 2 114 14746 75.21 793 799 185.4
D 1 52 871076 4683.52 778 763 185.8
D 12 227 354477 1903.48 778 763 185.8
D 8 195 258694 1388.03 778 763 185.8

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