ASTROSAT CZTI

Data Quality Report

Orbit 27239

Creation date: 2024-06-27T19:38:04.512239
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/AS1T03_243T01_9000003918_27239cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27239cztM0_level2_quad_clean.evt
Size (bytes)445,884,48097,289,280
Size425.2 MB 92.8 MB
Events in quadrant A3,161,042647,971
Events in quadrant B3,385,828655,146
Events in quadrant C3,091,028616,083
Events in quadrant D3,460,731610,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132570
B0138830
C0130320
D0141070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5967771.290431%
B5967871.458019%
C5968891.491287%
D5968841.407507%

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 7142 5968 2 2 0.03% 0.03%
B 7142 5968 12 12 0.17% 0.20%
C 7143 5969 0 0 0.00% 0.00%
D 7143 5969 33 33 0.46% 0.55%

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 14925 87.56 808 796 161.4
A 12 96 14123 82.59 808 796 161.4
A 14 235 9649 54.87 808 796 161.4
B 3 64 108859 717.8 795 778 150.6
B 15 33 103735 683.77 795 778 150.6
B 0 190 24407 156.93 795 778 150.6
C 14 238 123744 695.81 757 765 176.7
C 15 208 15984 86.11 757 765 176.7
C 4 224 5423 26.35 757 765 176.7
D 1 52 218513 1173.96 773 757 185.5
D 12 233 137889 739.3 773 757 185.5
D 7 38 90638 484.56 773 757 185.5

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