ASTROSAT CZTI

Data Quality Report

Orbit 35349

Creation date: 2022-04-12T15:04:55.188561
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/AS1A11_093T01_9000005064_35349cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35349cztM0_level2_quad_clean.evt
Size (bytes)434,756,16075,176,640
Size414.6 MB 71.7 MB
Events in quadrant A2,515,100486,566
Events in quadrant B3,131,145496,425
Events in quadrant C3,046,280487,047
Events in quadrant D4,135,659456,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01038660
B01235440
C01193251
D01577982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497640.080386%
B49921783.565705%
C49791553.113075%
D49871683.368759%

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 7137 5000 0 0 0.00% 0.00%
B 7137 5009 143 143 2.00% 2.85%
C 7137 5000 155 155 2.17% 3.10%
D 7137 5010 168 168 2.35% 3.35%

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 109783 901.52 608 599 121.1
A 15 223 19298 154.4 608 599 121.1
A 13 6 13632 107.61 608 599 121.1
B 5 172 476308 4171.44 598 582 114.0
B 5 236 173131 1513.01 598 582 114.0
B 4 232 56751 492.52 598 582 114.0
C 0 10 451515 3428.08 576 580 131.5
C 15 214 209827 1590.73 576 580 131.5
C 3 233 53273 400.58 576 580 131.5
D 7 80 1040164 7360.76 581 564 141.2
D 8 195 241606 1706.67 581 564 141.2
D 2 152 194635 1374.1 581 564 141.2

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