ASTROSAT CZTI

Data Quality Report

Orbit 21715

Creation date: 2024-06-27T18:31:21.563219
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/AS1A07_039T01_9000003216_21715cztM0_level2.evt modeM0/AS1A07_039T01_9000003216_21715cztM0_level2_quad_clean.evt
Size (bytes)530,184,960132,390,720
Size505.6 MB 126.3 MB
Events in quadrant A3,161,781890,631
Events in quadrant B3,459,708913,913
Events in quadrant C4,119,527879,375
Events in quadrant D4,842,287839,871

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141562
B0147212
C0167242
D0191462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6966660.947459%
B69661221.751364%
C69662673.832903%
D69664356.244617%

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 7636 6968 0 0 0.00% 0.00%
B 7636 6968 13 13 0.17% 0.19%
C 7636 6968 60 60 0.79% 0.86%
D 7636 6968 358 358 4.69% 5.14%

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 13 254 12488 70.2 819 799 166.5
A 0 226 7006 37.28 819 799 166.5
A 3 137 6631 35.02 819 799 166.5
B 3 64 103573 665.4 822 800 154.5
B 0 230 38969 247.12 822 800 154.5
B 0 189 34046 215.25 822 800 154.5
C 8 208 884867 4784.52 796 800 184.8
C 14 238 125519 674.97 796 800 184.8
C 13 61 5560 25.76 796 800 184.8
D 13 153 1033963 5475.96 790 766 188.7
D 12 235 469353 2483.52 790 766 188.7
D 1 52 115659 608.93 790 766 188.7

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