ASTROSAT CZTI

Data Quality Report

Orbit 22151

Creation date: 2024-06-27T18:37:30.264286
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_145T01_9000003278_22151cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22151cztM0_level2_quad_clean.evt
Size (bytes)492,759,360104,590,080
Size469.9 MB 99.7 MB
Events in quadrant A3,502,629673,494
Events in quadrant B3,767,034682,022
Events in quadrant C3,520,833651,951
Events in quadrant D3,629,511644,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153151
B0160101
C0154542
D0156141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7416280.377562%
B7416931.254045%
C7415660.890088%
D7415310.418071%

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 7771 7417 0 0 0.00% 0.00%
B 7771 7417 29 29 0.37% 0.39%
C 7770 7416 0 0 0.00% 0.00%
D 7770 7416 5 5 0.06% 0.07%

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 3 1 19917 104.42 902 882 182.3
A 13 254 10697 53.84 902 882 182.3
A 3 137 8030 39.21 902 882 182.3
B 10 246 155116 887.14 897 874 173.9
B 3 64 68585 389.45 897 874 173.9
B 12 111 21747 120.05 897 874 173.9
C 14 238 136756 676.05 856 860 201.0
C 10 22 40893 199.15 856 860 201.0
C 13 61 6009 25.62 856 860 201.0
D 7 238 196649 926.81 874 850 211.3
D 12 235 48492 225.51 874 850 211.3
D 2 234 32047 147.67 874 850 211.3

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